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Como migrar para a API Interactions

Este guia ajuda você a migrar da API generateContent para a API Interactions.

A API Interactions é a maneira mais simples e melhor de criar com modelos do Gemini e agentes. Embora o generateContent ainda seja totalmente compatível, recomendamos a API Interactions para todos os novos desenvolvimentos.

Por que migrar?

A API Interactions é a maneira mais simples e melhor de criar com modelos do Gemini e agentes:

Gerenciamento de histórico do lado do servidor: fluxos de várias interações simplificados com previous_interaction_id. O servidor ativa o estado por padrão (store=true), mas é possível ativar o comportamento sem estado definindo store=false.
Etapas de execução observáveis: as etapas tipadas facilitam a depuração de fluxos complexos e a renderização da interface para eventos intermediários (como raciocínio ou widgets da Pesquisa).
Uso de ferramentas e Agentic Workflows: suporte nativo para uso de ferramentas em várias etapas, orquestração e fluxos de raciocínio complexos por meio de etapas de execução tipadas.
Tarefas em segundo plano e de longa duração: permite transferir operações demoradas, como o Deep Think e o Deep Research, para processos em segundo plano usando background=true.

Entrada/saída básica

Nesta seção, mostramos como migrar uma solicitação de geração de texto simples.

Antes (`generateContent`)

A API generateContent não tem estado e retorna a resposta diretamente. A estrutura de resposta envolve a saída em uma lista de candidates, cada uma contendo content com uma lista de parts para analisar.

Python

from google import genai

client = genai.Client()

response = client.models.generate_content(
    model="gemini-2.5-flash-lite", contents="Tell me a joke."
)
print(response.text)

JavaScript

import { GoogleGenAI } from '@google/genai';

const ai = new GoogleGenAI({});

const response = await ai.models.generateContent({
  model: "gemini-2.5-flash-lite",
  contents: "Tell me a joke.",
});
console.log(response.text);

Java

import com.google.genai.Client;
import com.google.genai.types.GenerateContentResponse;

Client client = new Client();

GenerateContentResponse response =
    client.models.generateContent("gemini-2.5-flash-lite", "Tell me a joke.", null);
System.out.println(response.text());

Go

package main

import (
    "context"
    "fmt"
    "log"

    "google.golang.org/genai"
)

func main() {
    ctx := context.Background()
    client, err := genai.NewClient(ctx, nil)
    if err != nil {
        log.Fatal(err)
    }

    response, err := client.Models.GenerateContent(
        ctx,
        "gemini-2.5-flash-lite",
        genai.Text("Tell me a joke."),
        nil,
    )
    if err != nil {
        log.Fatal(err)
    }
    fmt.Println(response.Text())
}

REST

# Request
curl -X POST "https://generativelanguage.googleapis.com/v1beta/models/gemini-2.5-flash-lite:generateContent" \
-H "Content-Type: application/json" \
-H "x-goog-api-key: $GEMINI_API_KEY" \
-d '{
    "contents": [{
        "parts": [{
            "text": "Tell me a joke."
        }]
    }]
}'

# Response
{
  "candidates": [
    {
      "content": {
        "parts": [
          {
            "text": "Why did the chicken cross the road? To get to the other side!"
          }
        ],
        "role": "model"
      },
      "finishReason": "STOP",
      "index": 0
    }
  ],
  "usageMetadata": {
    "promptTokenCount": 4,
    "candidatesTokenCount": 12,
    "totalTokenCount": 16
  }
}

A API Interactions retorna um recurso de interação armazenado com uma linha do tempo steps. Embora seja possível inspecionar a matriz steps manualmente para encontrar eventos intermediários, os SDKs de IA generativa do Google oferecem propriedades de conveniência diretamente no objeto Interaction retornado para acessar a saída final.

A propriedade de conveniência mais comum é .output_text (String), que extrai e une automaticamente blocos TextContent consecutivos no final da resposta do modelo. Embora isso funcione perfeitamente para respostas simples, não inclui blocos de texto anteriores separados por conteúdo não textual (como pensamentos, imagens, áudio ou chamadas de ferramentas). Para respostas multimodais complexas ou intercaladas, é necessário iterar manualmente em steps.

Python

from google import genai

client = genai.Client()

interaction = client.interactions.create(
    model="gemini-3.8-flash", input="Tell me a joke."
)

print(interaction.output_text)

JavaScript

import { GoogleGenAI } from '@google/genai';

const client = new GoogleGenAI({});

let interaction = await client.interactions.create({
    model: 'gemini-3.8-flash',
    input: 'Tell me a joke.'
});

console.log(interaction.output_text);

Java

import com.google.genai.Client;
import com.google.genai.gaos.models.interactions.CreateModelInteraction;
import com.google.genai.gaos.models.interactions.Interaction;
import com.google.genai.gaos.models.interactions.InteractionsInput;
import com.google.genai.gaos.models.interactions.Model;
import com.google.genai.gaos.models.operations.CreateInteractionRequestBody;

Client client = new Client();

CreateModelInteraction request =
    CreateModelInteraction.builder()
        .model(Model.of("gemini-3.8-flash"))
        .input(InteractionsInput.of("Tell me a joke."))
        .build();

Interaction interaction =
    client.interactions.create(CreateInteractionRequestBody.of(request)).interaction().get();

System.out.println(interaction.outputText().orElse(""));

Go

package main

import (
    "context"
    "fmt"
    "log"

    "google.golang.org/genai"
    "google.golang.org/genai/interactions/models/interactions"
    "google.golang.org/genai/interactions/models/operations"
)

func main() {
    ctx := context.Background()
    client, err := genai.NewClient(ctx, nil)
    if err != nil {
        log.Fatal(err)
    }

    res, err := client.Interactions.Create(ctx, operations.CreateInteractionRequest{
        Body: operations.NewCreateInteractionRequestBody(interactions.CreateModelInteraction{
            Model: interactions.Model("gemini-3.8-flash"),
            Input: interactions.NewInteractionsInput("Tell me a joke."),
        }),
    })
    if err != nil {
        log.Fatal(err)
    }
    if res.Interaction.OutputText != nil {
        fmt.Println(*res.Interaction.OutputText)
    }
}

REST

# Request
curl -X POST "https://generativelanguage.googleapis.com/v1beta/interactions" \
-H "Content-Type: application/json" \
-H "x-goog-api-key: $GEMINI_API_KEY" \
-d '{
    "model": "gemini-3.8-flash",
    "input": "Tell me a joke."
}'

# Response
{
  "id": "int_123",
  "status": "completed",
  "steps": [
    {
      "type": "user_input",
      "status": "done",
      "content": [
        {
          "type": "text",
          "text": "Tell me a joke."
        }
      ]
    },
    {
      "type": "model_output",
      "status": "done",
      "content": [
        {
          "type": "text",
          "text": "Why did the chicken cross the road?"
        }
      ]
    }
  ]
}

Conversas com vários turnos

A API Interactions armazena interações por padrão, permitindo o gerenciamento de estado do lado do servidor para conversas multiturno.

Antes (`generateContent`)

No generateContent, é preciso gerenciar manualmente o histórico de conversas usando a matriz contents ou um assistente de chat do lado do cliente.

Python

Usar o assistente de chat (recomendado)

from google import genai

client = genai.Client()

chat = client.chats.create(model="gemini-2.5-flash-lite")
response1 = chat.send_message("Hi, my name is Phil.")
print(response1.text)

response2 = chat.send_message("What is my name?")
print(response2.text)

Gerenciar o histórico manualmente

from google import genai
from google.genai import types

client = genai.Client()

response = client.models.generate_content(
    model="gemini-2.5-flash-lite",
    contents=[
        types.Content(
            role="user", parts=[types.Part.from_text(text="Hi, my name is Phil.")]
        ),
        types.Content(
            role="model",
            parts=[types.Part.from_text(text="Hi Phil, how can I help you?")],
        ),
        types.Content(
            role="user", parts=[types.Part.from_text(text="What is my name?")]
        ),
    ],
)
print(response.text)

JavaScript

Usar o assistente de chat (recomendado)

import { GoogleGenAI } from '@google/genai';

const client = new GoogleGenAI({});

const chat = client.chats.create({ model: 'gemini-2.5-flash-lite' });
let response = await chat.sendMessage({ message: 'Hi, my name is Phil.' });
console.log(response.text);

response = await chat.sendMessage({ message: 'What is my name?' });
console.log(response.text);

Gerenciar o histórico manualmente

import { GoogleGenAI } from '@google/genai';

const client = new GoogleGenAI({});

const response = await client.models.generateContent({
    model: 'gemini-2.5-flash-lite',
    contents: [
        { role: 'user', parts: [{ text: 'Hi, my name is Phil.' }] },
        { role: 'model', parts: [{ text: 'Hi Phil, how can I help you?' }] },
        { role: 'user', parts: [{ text: 'What is my name?' }] }
    ]
});
console.log(response.text);

Java

import com.google.genai.Chat;
import com.google.genai.Client;
import com.google.genai.types.Content;
import com.google.genai.types.GenerateContentResponse;
import com.google.genai.types.Part;
import java.util.Arrays;

Client client = new Client();

// Using the chat helper (recommended)
Chat chat = client.chats.create("gemini-2.5-flash-lite");
GenerateContentResponse response1 = chat.sendMessage("Hi, my name is Phil.");
System.out.println(response1.text());

GenerateContentResponse response2 = chat.sendMessage("What is my name?");
System.out.println(response2.text());

// Manually managing history
GenerateContentResponse manualResponse =
    client.models.generateContent(
        "gemini-2.5-flash-lite",
        Arrays.asList(
            Content.builder()
                .role("user")
                .parts(Arrays.asList(Part.fromText("Hi, my name is Phil.")))
                .build(),
            Content.builder()
                .role("model")
                .parts(Arrays.asList(Part.fromText("Hi Phil, how can I help you?")))
                .build(),
            Content.builder()
                .role("user")
                .parts(Arrays.asList(Part.fromText("What is my name?")))
                .build()),
        null);
System.out.println(manualResponse.text());

Go

package main

import (
    "context"
    "fmt"
    "log"

    "google.golang.org/genai"
)

func main() {
    ctx := context.Background()
    client, err := genai.NewClient(ctx, nil)
    if err != nil {
        log.Fatal(err)
    }

    // Using the chat helper (recommended)
    chat, err := client.Chats.Create(ctx, "gemini-2.5-flash-lite", nil, nil)
    if err != nil {
        log.Fatal(err)
    }
    response1, err := chat.SendMessage(ctx, genai.Part{Text: "Hi, my name is Phil."})
    if err != nil {
        log.Fatal(err)
    }
    fmt.Println(response1.Text())

    response2, err := chat.SendMessage(ctx, genai.Part{Text: "What is my name?"})
    if err != nil {
        log.Fatal(err)
    }
    fmt.Println(response2.Text())

    // Manually managing history
    history := []*genai.Content{
        genai.NewContentFromText("Hi, my name is Phil.", genai.RoleUser),
        genai.NewContentFromText("Hi Phil, how can I help you?", genai.RoleModel),
        genai.NewContentFromText("What is my name?", genai.RoleUser),
    }
    manualResponse, err := client.Models.GenerateContent(ctx, "gemini-2.5-flash-lite", history, nil)
    if err != nil {
        log.Fatal(err)
    }
    fmt.Println(manualResponse.Text())
}

REST

# Request (the second turn requires sending the entire history)
curl -X POST "https://generativelanguage.googleapis.com/v1beta/models/gemini-2.5-flash-lite:generateContent" \
-H "Content-Type: application/json" \
-H "x-goog-api-key: $GEMINI_API_KEY" \
-d '{
    "contents": [
        {"role": "user", "parts": [{"text": "Hi, my name is Phil."}]},
        {"role": "model", "parts": [{"text": "Hi Phil, how can I help you?"}]},
        {"role": "user", "parts": [{"text": "What is my name?"}]}
    ]
}'

# Response
{
  "candidates": [
    {
      "content": {
        "parts": [
          {
            "text": "Your name is Phil."
          }
        ],
        "role": "model"
      },
      "finishReason": "STOP",
      "index": 0
    }
  ]
}

Depois (API Interactions)

A API Interactions gerencia o estado no servidor. Você continua uma conversa fazendo referência ao previous_interaction_id.

Python

from google import genai

client = genai.Client()

interaction1 = client.interactions.create(
    model="gemini-3.8-flash", input="Hi, my name is Phil."
)
print("Response 1:", interaction1.output_text)

interaction2 = client.interactions.create(
    model="gemini-3.8-flash",
    previous_interaction_id=interaction1.id,
    input="What is my name?",
)
print("Response 2:", interaction2.output_text)

JavaScript

import { GoogleGenAI } from '@google/genai';

const client = new GoogleGenAI({});

let interaction = await client.interactions.create({
    model: 'gemini-3.8-flash',
    input: 'Hi, my name is Phil.'
});
console.log("Response 1:", interaction.output_text);

interaction = await client.interactions.create({
    model: 'gemini-3.8-flash',
    previous_interaction_id: interaction.id,
    input: 'What is my name?'
});
console.log("Response 2:", interaction.output_text);

Java

import com.google.genai.Client;
import com.google.genai.gaos.models.interactions.CreateModelInteraction;
import com.google.genai.gaos.models.interactions.Interaction;
import com.google.genai.gaos.models.interactions.InteractionsInput;
import com.google.genai.gaos.models.interactions.Model;
import com.google.genai.gaos.models.operations.CreateInteractionRequestBody;

Client client = new Client();

CreateModelInteraction req1 =
    CreateModelInteraction.builder()
        .model(Model.of("gemini-3.8-flash"))
        .input(InteractionsInput.of("Hi, my name is Phil."))
        .build();

Interaction interaction1 =
    client.interactions.create(CreateInteractionRequestBody.of(req1)).interaction().get();
System.out.println("Response 1: " + interaction1.outputText().orElse(""));

CreateModelInteraction req2 =
    CreateModelInteraction.builder()
        .model(Model.of("gemini-3.8-flash"))
        .previousInteractionId(interaction1.id().orElse(""))
        .input(InteractionsInput.of("What is my name?"))
        .build();

Interaction interaction2 =
    client.interactions.create(CreateInteractionRequestBody.of(req2)).interaction().get();
System.out.println("Response 2: " + interaction2.outputText().orElse(""));

Go

package main

import (
    "context"
    "fmt"
    "log"

    "google.golang.org/genai"
    "google.golang.org/genai/interactions/models/interactions"
    "google.golang.org/genai/interactions/models/operations"
)

func main() {
    ctx := context.Background()
    client, err := genai.NewClient(ctx, nil)
    if err != nil {
        log.Fatal(err)
    }

    res1, err := client.Interactions.Create(ctx, operations.CreateInteractionRequest{
        Body: operations.NewCreateInteractionRequestBody(interactions.CreateModelInteraction{
            Model: interactions.Model("gemini-3.8-flash"),
            Input: interactions.NewInteractionsInput("Hi, my name is Phil."),
        }),
    })
    if err != nil {
        log.Fatal(err)
    }
    if res1.Interaction.OutputText != nil {
        fmt.Println("Response 1:", *res1.Interaction.OutputText)
    }

    res2, err := client.Interactions.Create(ctx, operations.CreateInteractionRequest{
        Body: operations.NewCreateInteractionRequestBody(interactions.CreateModelInteraction{
            Model:                 interactions.Model("gemini-3.8-flash"),
            PreviousInteractionID: res1.Interaction.ID,
            Input:                 interactions.NewInteractionsInput("What is my name?"),
        }),
    })
    if err != nil {
        log.Fatal(err)
    }
    if res2.Interaction.OutputText != nil {
        fmt.Println("Response 2:", *res2.Interaction.OutputText)
    }
}

REST

# First Request
curl -X POST "https://generativelanguage.googleapis.com/v1beta/interactions" \
-H "Content-Type: application/json" \
-H "x-goog-api-key: $GEMINI_API_KEY" \
-d '{
    "model": "gemini-3.8-flash",
    "input": "Hi, my name is Phil."
}'

# Second Request (using ID from first response)
curl -X POST "https://generativelanguage.googleapis.com/v1beta/interactions" \
-H "Content-Type: application/json" \
-H "x-goog-api-key: $GEMINI_API_KEY" \
-d '{
    "model": "gemini-3.8-flash",
    "previous_interaction_id": "int_123",
    "input": "What is my name?"
}'

# Response to Second Request
{
  "id": "int_123",
  "steps": [
    {
      "type": "user_input",
      "status": "done",
      "content": [{ "type": "text", "text": "Hi, my name is Phil." }]
    },
    {
      "type": "model_output",
      "status": "done",
      "content": [{ "type": "text", "text": "Hello Phil! How can I help you today?" }]
    },
    {
      "type": "user_input",
      "status": "done",
      "content": [{ "type": "text", "text": "What is my name?" }]
    },
    {
      "type": "model_output",
      "status": "done",
      "content": [{ "type": "text", "text": "Your name is Phil." }]
    }
  ]
}

Entradas multimodais

As duas APIs aceitam entradas multimodais (texto, imagens, vídeo etc.).

Antes (`generateContent`)

Em generateContent, você transmite uma lista de parts na matriz contents. A resposta retorna a saída no parts do primeiro candidato.

Python

from google import genai
from google.genai import types

client = genai.Client()

with open("sample.jpg", "rb") as f:
    image_bytes = f.read()

response = client.models.generate_content(
    model="gemini-2.5-flash-lite",
    contents=[
        types.Part.from_bytes(data=image_bytes, mime_type="image/jpeg"),
        "Describe this image.",
    ],
)
print(response.text)

JavaScript

import { GoogleGenAI } from '@google/genai';
import * as fs from 'fs';

const client = new GoogleGenAI({});

const imageBytes = fs.readFileSync('sample.jpg').toString('base64');

const response = await client.models.generateContent({
    model: 'gemini-2.5-flash-lite',
    contents: [
        {
            inlineData: {
                data: imageBytes,
                mimeType: 'image/jpeg',
            },
        },
        'Describe this image.',
    ],
});
console.log(response.text);

Java

import com.google.genai.Client;
import com.google.genai.types.Content;
import com.google.genai.types.GenerateContentResponse;
import com.google.genai.types.Part;
import java.nio.file.Files;
import java.nio.file.Paths;

Client client = new Client();

byte[] imageBytes = Files.readAllBytes(Paths.get("sample.jpg"));

GenerateContentResponse response =
    client.models.generateContent(
        "gemini-2.5-flash-lite",
        Content.fromParts(
            Part.fromBytes(imageBytes, "image/jpeg"), Part.fromText("Describe this image.")),
        null);
System.out.println(response.text());

Go

package main

import (
    "context"
    "fmt"
    "log"
    "os"

    "google.golang.org/genai"
)

func main() {
    ctx := context.Background()
    client, err := genai.NewClient(ctx, nil)
    if err != nil {
        log.Fatal(err)
    }

    imageBytes, err := os.ReadFile("sample.jpg")
    if err != nil {
        log.Fatal(err)
    }

    contents := []*genai.Content{
        genai.NewContentFromParts([]*genai.Part{
            genai.NewPartFromBytes(imageBytes, "image/jpeg"),
            genai.NewPartFromText("Describe this image."),
        }, genai.RoleUser),
    }

    response, err := client.Models.GenerateContent(ctx, "gemini-2.5-flash-lite", contents, nil)
    if err != nil {
        log.Fatal(err)
    }
    fmt.Println(response.Text())
}

REST

# Request
curl -X POST "https://generativelanguage.googleapis.com/v1beta/models/gemini-2.5-flash-lite:generateContent" \
-H "Content-Type: application/json" \
-H "x-goog-api-key: $GEMINI_API_KEY" \
-d '{
    "contents": [{
        "parts": [
            {
                "inlineData": {
                    "mimeType": "image/jpeg",
                    "data": "..."
                }
            },
            {
                "text": "Describe this image."
            }
        ]
    }]
}'

# Response
{
  "candidates": [
    {
      "content": {
        "parts": [
          {
            "text": "This is a picture of a beautiful sunset."
          }
        ],
        "role": "model"
      }
    }
  ]
}

Depois (API Interactions)

Na API Interactions, você transmite uma matriz para o campo input. Para recuperar o conteúdo de saída, encontre a etapa model_output na linha do tempo.

Python

import base64
from google import genai

client = genai.Client()

with open("sample.jpg", "rb") as f:
    image_bytes = f.read()
image_b64 = base64.b64encode(image_bytes).decode("utf-8")

interaction = client.interactions.create(
    model="gemini-3.8-flash",
    input=[
        {
            "type": "image",
            "mime_type": "image/jpeg",
            "data": image_b64,
        },
        {"type": "text", "text": "Describe this image."},
    ],
)
print(interaction.output_text)

JavaScript

import { GoogleGenAI } from '@google/genai';
import * as fs from 'fs';

const client = new GoogleGenAI({});

const imageBytes = fs.readFileSync('sample.jpg').toString('base64');

const interaction = await client.interactions.create({
    model: 'gemini-3.8-flash',
    input: [
        {
            type: 'image',
            mime_type: 'image/jpeg',
            data: imageBytes
        },
        {
            type: 'text',
            text: 'Describe this image.'
        }
    ]
});
console.log(interaction.output_text);

Java

import com.google.genai.Client;
import com.google.genai.gaos.models.interactions.CreateModelInteraction;
import com.google.genai.gaos.models.interactions.ImageContent;
import com.google.genai.gaos.models.interactions.ImageContentMimeType;
import com.google.genai.gaos.models.interactions.Interaction;
import com.google.genai.gaos.models.interactions.InteractionsInput;
import com.google.genai.gaos.models.interactions.Model;
import com.google.genai.gaos.models.interactions.TextContent;
import com.google.genai.gaos.models.operations.CreateInteractionRequestBody;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.Arrays;
import java.util.Base64;

Client client = new Client();

byte[] imageBytes = Files.readAllBytes(Paths.get("sample.jpg"));
String base64ImageData = Base64.getEncoder().encodeToString(imageBytes);

CreateModelInteraction request =
    CreateModelInteraction.builder()
        .model(Model.of("gemini-3.8-flash"))
        .input(
            InteractionsInput.ofContent(
                Arrays.asList(
                    ImageContent.builder()
                        .mimeType(ImageContentMimeType.IMAGE_JPEG)
                        .data(base64ImageData)
                        .build(),
                    TextContent.builder().text("Describe this image.").build())))
        .build();

Interaction interaction =
    client.interactions.create(CreateInteractionRequestBody.of(request)).interaction().get();
System.out.println(interaction.outputText().orElse(""));

Go

package main

import (
    "context"
    "encoding/base64"
    "fmt"
    "log"
    "os"

    "google.golang.org/genai"
    "google.golang.org/genai/interactions/models/interactions"
    "google.golang.org/genai/interactions/models/operations"
)

func main() {
    ctx := context.Background()
    client, err := genai.NewClient(ctx, nil)
    if err != nil {
        log.Fatal(err)
    }

    imageBytes, err := os.ReadFile("sample.jpg")
    if err != nil {
        log.Fatal(err)
    }
    base64ImageData := base64.StdEncoding.EncodeToString(imageBytes)

    res, err := client.Interactions.Create(ctx, operations.CreateInteractionRequest{
        Body: operations.NewCreateInteractionRequestBody(interactions.CreateModelInteraction{
            Model: interactions.Model("gemini-3.8-flash"),
            Input: interactions.NewInteractionsInput([]interactions.Content{
                interactions.NewContent(interactions.ImageContent{
                    MimeType: interactions.ImageContentMimeType("image/jpeg").ToPointer(),
                    Data:     genai.Ptr(base64ImageData),
                }),
                interactions.NewContent(interactions.TextContent{
                    Text: "Describe this image.",
                }),
            }),
        }),
    })
    if err != nil {
        log.Fatal(err)
    }
    if res.Interaction.OutputText != nil {
        fmt.Println(*res.Interaction.OutputText)
    }
}

REST

# Request
curl -X POST "https://generativelanguage.googleapis.com/v1beta/interactions" \
-H "Content-Type: application/json" \
-H "x-goog-api-key: $GEMINI_API_KEY" \
-d '{
    "model": "gemini-3.8-flash",
    "input": [
        {
            "type": "image",
            "mime_type": "image/jpeg",
            "data": "..."
        },
        {
            "type": "text",
            "text": "Describe this image."
        }
    ]
}'

# Response
{
  "id": "int_multimodal",
  "steps": [
    {
      "type": "user_input",
      "status": "done",
      "content": [
        {
          "type": "image",
          "mime_type": "image/jpeg",
          "data": "..."
        },
        {
          "type": "text",
          "text": "Describe this image."
        }
      ]
    },
    {
      "type": "model_output",
      "status": "done",
      "content": [
        {
          "type": "text",
          "text": "This is a picture of a beautiful sunset over the mountains."
        }
      ]
    }
  ]
}

Resposta estruturada

Para que o modelo retorne um JSON que corresponda a um esquema específico, configure o formato de resposta.

Antes (`generateContent`)

No generateContent, você configura o formato de saída usando os campos response_mime_type e response_schema aninhados no objeto config (ou generationConfig).

Python

from google import genai
from google.genai import types
from pydantic import BaseModel

client = genai.Client()

class Recipe(BaseModel):
    recipe_name: str
    ingredients: list[str]

response = client.models.generate_content(
    model="gemini-2.5-flash-lite",
    contents="Give me a recipe for chocolate chip cookies.",
    config=types.GenerateContentConfig(
        response_mime_type="application/json",
        response_schema=Recipe,
    ),
)
print(response.text)

JavaScript

import { GoogleGenAI, Type } from '@google/genai';

const ai = new GoogleGenAI({});

const response = await ai.models.generateContent({
    model: 'gemini-2.5-flash-lite',
    contents: 'Give me a recipe for chocolate chip cookies.',
    config: {
        responseMimeType: 'application/json',
        responseSchema: {
            type: Type.OBJECT,
            properties: {
                recipe_name: { type: Type.STRING },
                ingredients: {
                    type: Type.ARRAY,
                    items: { type: Type.STRING },
                },
            },
            required: ['recipe_name', 'ingredients'],
        },
    },
});
console.log(response.text);

Java

import com.google.genai.Client;
import com.google.genai.types.GenerateContentConfig;
import com.google.genai.types.GenerateContentResponse;
import com.google.genai.types.Schema;
import com.google.genai.types.Type;
import java.util.Arrays;
import java.util.Map;

Client client = new Client();

Schema recipeSchema =
    Schema.builder()
        .type(Type.Known.OBJECT)
        .properties(
            Map.of(
                "recipe_name", Schema.builder().type(Type.Known.STRING).build(),
                "ingredients",
                    Schema.builder()
                        .type(Type.Known.ARRAY)
                        .items(Schema.builder().type(Type.Known.STRING).build())
                        .build()))
        .required(Arrays.asList("recipe_name", "ingredients"))
        .build();

GenerateContentResponse response =
    client.models.generateContent(
        "gemini-2.5-flash-lite",
        "Give me a recipe for chocolate chip cookies.",
        GenerateContentConfig.builder()
            .responseMimeType("application/json")
            .responseSchema(recipeSchema)
            .build());
System.out.println(response.text());

Go

package main

import (
    "context"
    "fmt"
    "log"

    "google.golang.org/genai"
)

func main() {
    ctx := context.Background()
    client, err := genai.NewClient(ctx, nil)
    if err != nil {
        log.Fatal(err)
    }

    recipeSchema := &genai.Schema{
        Type: genai.TypeObject,
        Properties: map[string]*genai.Schema{
            "recipe_name": {Type: genai.TypeString},
            "ingredients": {
                Type:  genai.TypeArray,
                Items: &genai.Schema{Type: genai.TypeString},
            },
        },
        Required: []string{"recipe_name", "ingredients"},
    }

    response, err := client.Models.GenerateContent(
        ctx,
        "gemini-2.5-flash-lite",
        genai.Text("Give me a recipe for chocolate chip cookies."),
        &genai.GenerateContentConfig{
            ResponseMIMEType: "application/json",
            ResponseSchema:   recipeSchema,
        },
    )
    if err != nil {
        log.Fatal(err)
    }
    fmt.Println(response.Text())
}

REST

# Request
curl -X POST "https://generativelanguage.googleapis.com/v1beta/models/gemini-2.5-flash-lite:generateContent" \
-H "Content-Type: application/json" \
-H "x-goog-api-key: $GEMINI_API_KEY" \
-d '{
    "contents": [{
        "parts": [{
            "text": "Give me a recipe for chocolate chip cookies."
        }]
    }],
    "generationConfig": {
        "responseMimeType": "application/json",
        "responseSchema": {
            "type": "OBJECT",
            "properties": {
                "recipe_name": { "type": "STRING" },
                "ingredients": {
                    "type": "ARRAY",
                    "items": { "type": "STRING" }
                }
            },
            "required": ["recipe_name", "ingredients"]
        }
    }
}'

# Response
{
  "candidates": [
    {
      "content": {
        "parts": [
          {
            "text": "{\n  \"recipe_name\": \"Chocolate Chip Cookies\",\n  \"ingredients\": [\n    \"1 cup butter\",\n    \"1 cup sugar\",\n    \"2 cups flour\",\n    \"1 cup chocolate chips\"\n  ]\n}"
          }
        ],
        "role": "model"
      }
    }
  ]
}

Depois (API Interactions)

Na API Interactions, os controles de formato de saída são movidos para um campo response_format de nível superior. Transmita um único objeto de formato ou uma matriz de objetos de formato ao solicitar mais de um tipo de saída.

Python

from google import genai
from pydantic import BaseModel

client = genai.Client()

class Recipe(BaseModel):
    recipe_name: str
    ingredients: list[str]

interaction = client.interactions.create(
    model="gemini-3.8-flash",
    input="Give me a recipe for chocolate chip cookies.",
    response_format={
        "type": "text",
        "mime_type": "application/json",
        "schema": Recipe.model_json_schema(),
    },
)

print(interaction.output_text)

JavaScript

import { GoogleGenAI } from '@google/genai';

const client = new GoogleGenAI({});

const interaction = await client.interactions.create({
    model: 'gemini-3.8-flash',
    input: 'Give me a recipe for chocolate chip cookies.',
    response_format: {
        type: 'text',
        mime_type: 'application/json',
        schema: {
            type: 'object',
            properties: {
                recipe_name: { type: 'string' },
                ingredients: {
                    type: 'array',
                    items: { type: 'string' }
                }
            },
            required: ['recipe_name', 'ingredients']
        }
    }
});
console.log(interaction.output_text);

Java

import com.google.genai.Client;
import com.google.genai.gaos.models.interactions.CreateModelInteraction;
import com.google.genai.gaos.models.interactions.CreateModelInteractionResponseFormat;
import com.google.genai.gaos.models.interactions.Interaction;
import com.google.genai.gaos.models.interactions.InteractionsInput;
import com.google.genai.gaos.models.interactions.Model;
import com.google.genai.gaos.models.interactions.ResponseFormat;
import com.google.genai.gaos.models.interactions.TextResponseFormat;
import com.google.genai.gaos.models.interactions.TextResponseFormatMimeType;
import com.google.genai.gaos.models.operations.CreateInteractionRequestBody;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Map;

Client client = new Client();

Map<String, Object> properties = new HashMap<>();
properties.put("recipe_name", Map.of("type", "string"));
properties.put("ingredients", Map.of("type", "array", "items", Map.of("type", "string")));

Map<String, Object> schema = new HashMap<>();
schema.put("type", "object");
schema.put("properties", properties);
schema.put("required", Arrays.asList("recipe_name", "ingredients"));

CreateModelInteraction request =
    CreateModelInteraction.builder()
        .model(Model.of("gemini-3.8-flash"))
        .input(InteractionsInput.of("Give me a recipe for chocolate chip cookies."))
        .responseFormat(
            CreateModelInteractionResponseFormat.of(
                ResponseFormat.of(
                    TextResponseFormat.builder()
                        .mimeType(TextResponseFormatMimeType.APPLICATION_JSON)
                        .schema(schema)
                        .build())))
        .build();

Interaction interaction =
    client.interactions.create(CreateInteractionRequestBody.of(request)).interaction().get();
System.out.println(interaction.outputText().orElse(""));

Go

package main

import (
    "context"
    "fmt"
    "log"

    "google.golang.org/genai"
    "google.golang.org/genai/interactions/models/interactions"
    "google.golang.org/genai/interactions/models/operations"
)

func main() {
    ctx := context.Background()
    client, err := genai.NewClient(ctx, nil)
    if err != nil {
        log.Fatal(err)
    }

    schema := map[string]any{
        "type": "object",
        "properties": map[string]any{
            "recipe_name": map[string]any{"type": "string"},
            "ingredients": map[string]any{
                "type":  "array",
                "items": map[string]any{"type": "string"},
            },
        },
        "required": []string{"recipe_name", "ingredients"},
    }

    res, err := client.Interactions.Create(ctx, operations.CreateInteractionRequest{
        Body: operations.NewCreateInteractionRequestBody(interactions.CreateModelInteraction{
            Model: interactions.Model("gemini-3.8-flash"),
            Input: interactions.NewInteractionsInput("Give me a recipe for chocolate chip cookies."),
            ResponseFormat: genai.Ptr(interactions.NewCreateModelInteractionResponseFormat(
                interactions.NewResponseFormat(interactions.TextResponseFormat{
                    MimeType: interactions.TextResponseFormatMimeType("application/json").ToPointer(),
                    Schema:   schema,
                }),
            )),
        }),
    })
    if err != nil {
        log.Fatal(err)
    }
    if res.Interaction.OutputText != nil {
        fmt.Println(*res.Interaction.OutputText)
    }
}

REST

# Request
curl -X POST "https://generativelanguage.googleapis.com/v1beta/interactions" \
-H "Content-Type: application/json" \
-H "x-goog-api-key: $GEMINI_API_KEY" \
-d '{
    "model": "gemini-3.8-flash",
    "input": "Give me a recipe for chocolate chip cookies.",
    "response_format": {
        "type": "text",
        "mime_type": "application/json",
        "schema": {
            "type": "object",
            "properties": {
                "recipe_name": { "type": "string" },
                "ingredients": {
                    "type": "array",
                    "items": { "type": "string" }
                }
            },
            "required": ["recipe_name", "ingredients"]
        }
    }
}'

# Response
{
  "id": "int_structured",
  "steps": [
    {
      "type": "user_input",
      "status": "done",
      "content": [{ "type": "text", "text": "Give me a recipe for chocolate chip cookies." }]
    },
    {
      "type": "model_output",
      "status": "done",
      "content": [
        {
          "type": "text",
          "text": "{\n  \"recipe_name\": \"Chocolate Chip Cookies\",\n  \"ingredients\": [\n    \"1 cup butter\",\n    \"1 cup sugar\",\n    \"2 cups flour\",\n    \"1 cup chocolate chips\"\n  ]\n}"
        }
      ]
    }
  ]
}

Geração multimodal

Ao gerar conteúdo em modalidades além do texto (como imagens ou áudio), a principal diferença é como a resposta estrutura a mídia generativa.

Antes (`generateContent`)

No generateContent, a resposta retorna a mídia generativa diretamente no parts do candidato, normalmente como dados em base64 em inlineData.

# Response structure concept
{
  "candidates": [
    {
      "content": {
        "parts": [
          {
            "text": "Here is your generated image:"
          },
          {
            "inlineData": {
              "mimeType": "image/jpeg",
              "data": "...base64..."
            }
          }
        ]
      }
    }
  ]
}

Depois (API Interactions)

Na API Interactions, a mídia generativa aparece como itens distintos na matriz content de uma etapa model_output na linha do tempo, mantendo o fluxo cronológico da interação.

# Response structure concept
{
  "id": "int_123",
  "steps": [
    {
      "type": "model_output",
      "status": "done",
      "content": [
        {
          "type": "text",
          "text": "Here is your generated image:"
        },
        {
          "type": "image",
          "mime_type": "image/jpeg",
          "data": "...base64..." // Or a reference URL in future
        }
      ]
    }
  ]
}

Isso mantém a análise da resposta consistente com a forma como as entradas e saídas de texto são processadas: tudo é uma etapa na linha do tempo.

Ferramentas do lado do servidor

O Gemini é compatível com ferramentas integradas do lado do servidor, como o embasamento com a Pesquisa Google. A principal diferença é como a resposta representa a execução da ferramenta.

Antes (`generateContent`)

No generateContent, as ferramentas do lado do servidor são, em grande parte, opacas. Você ativa a ferramenta e recebe uma resposta final com um objeto groundingMetadata separado. É importante ressaltar que as citações não são inline. O groundingSupports usa índices de caracteres para mapear segmentos de texto de volta às fontes da Web em groundingChunks.

Python

from google import genai
from google.genai import types

client = genai.Client()

response = client.models.generate_content(
    model="gemini-2.5-flash-lite",
    contents="Who won Euro 2024?",
    config=types.GenerateContentConfig(
        tools=[{"google_search": {}}]
    ),
)

metadata = response.candidates[0].grounding_metadata
if metadata.search_entry_point:
    print(f"Search Entry Point: {metadata.search_entry_point.rendered_content}")

for support in metadata.grounding_supports:
    print(f"Citation: {support.segment.text}")

JavaScript

import { GoogleGenAI } from '@google/genai';

const client = new GoogleGenAI({});

const response = await client.models.generateContent({
    model: 'gemini-2.5-flash-lite',
    contents: 'Who won Euro 2024?',
    config: {
        tools: [{ google_search: {} }]
    }
});

const metadata = response.candidates[0].groundingMetadata;
if (metadata.searchEntryPoint) {
    console.log(`Search Entry Point: ${metadata.searchEntryPoint.renderedContent}`);
}
for (const support of metadata.groundingSupports) {
    console.log(`Citation: ${support.segment.text}`);
}

Java

import com.google.genai.Client;
import com.google.genai.types.Candidate;
import com.google.genai.types.GenerateContentConfig;
import com.google.genai.types.GenerateContentResponse;
import com.google.genai.types.GoogleSearch;
import com.google.genai.types.GroundingMetadata;
import com.google.genai.types.GroundingSupport;
import com.google.genai.types.Tool;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.Optional;

Client client = new Client();

GenerateContentResponse response =
    client.models.generateContent(
        "gemini-2.5-flash-lite",
        "Who won Euro 2024?",
        GenerateContentConfig.builder()
            .tools(
                Arrays.asList(
                    Tool.builder().googleSearch(GoogleSearch.builder().build()).build()))
            .build());

List<Candidate> candidates = response.candidates().orElse(Collections.emptyList());
if (!candidates.isEmpty() && candidates.get(0).groundingMetadata().isPresent()) {
  GroundingMetadata metadata = candidates.get(0).groundingMetadata().get();
  if (metadata.searchEntryPoint().isPresent()) {
    System.out.println(
        "Search Entry Point: " + metadata.searchEntryPoint().get().renderedContent().orElse(""));
  }
  for (GroundingSupport support : metadata.groundingSupports().orElse(Collections.emptyList())) {
    Optional<String> segmentText = support.segment().flatMap(s -> s.text());
    segmentText.ifPresent(text -> System.out.println("Citation: " + text));
  }
}

Go

package main

import (
    "context"
    "fmt"
    "log"

    "google.golang.org/genai"
)

func main() {
    ctx := context.Background()
    client, err := genai.NewClient(ctx, nil)
    if err != nil {
        log.Fatal(err)
    }

    response, err := client.Models.GenerateContent(
        ctx,
        "gemini-2.5-flash-lite",
        genai.Text("Who won Euro 2024?"),
        &genai.GenerateContentConfig{
            Tools: []*genai.Tool{
                {GoogleSearch: &genai.GoogleSearch{}},
            },
        },
    )
    if err != nil {
        log.Fatal(err)
    }

    if len(response.Candidates) > 0 && response.Candidates[0].GroundingMetadata != nil {
        metadata := response.Candidates[0].GroundingMetadata
        if metadata.SearchEntryPoint != nil {
            fmt.Println("Search Entry Point:", metadata.SearchEntryPoint.RenderedContent)
        }
        for _, support := range metadata.GroundingSupports {
            if support.Segment != nil {
                fmt.Println("Citation:", support.Segment.Text)
            }
        }
    }
}

REST

# Request
curl -X POST "https://generativelanguage.googleapis.com/v1beta/models/gemini-2.5-flash-lite:generateContent" \
-H "Content-Type: application/json" \
-H "x-goog-api-key: $GEMINI_API_KEY" \
-d '{
    "contents": [{
        "parts": [{
            "text": "Who won Euro 2024?"
        }]
    }],
    "tools": [{
        "googleSearchRetrieval": {}
    }]
}'

# Response
{
  "candidates": [
    {
      "content": {
        "parts": [
          {
            "text": "Spain won Euro 2024, defeating England 2-1 in the final. This victory marks Spain's record fourth European Championship title."
          }
        ],
        "role": "model"
      },
      "groundingMetadata": {
        "webSearchQueries": [
          "UEFA Euro 2024 winner",
          "who won euro 2024"
        ],
        "searchEntryPoint": {
          "renderedContent": "<!-- HTML and CSS for the search widget -->"
        },
        "groundingChunks": [
          {"web": {"uri": "https://vertexaisearch.cloud.google.com.....", "title": "aljazeera.com"}},
          {"web": {"uri": "https://vertexaisearch.cloud.google.com.....", "title": "uefa.com"}}
        ],
        "groundingSupports": [
          {
            "segment": {"startIndex": 0, "endIndex": 85, "text": "Spain won Euro 2024, defeatin..."},
            "groundingChunkIndices": [0]
          },
          {
            "segment": {"startIndex": 86, "endIndex": 210, "text": "This victory marks Spain's..."},
            "groundingChunkIndices": [0, 1]
          }
        ]
      }
    }
  ]
}

Depois (API Interactions)

Na API Interactions, as ferramentas do lado do servidor oferecem transparência total da linha do tempo. A API registra a chamada e o resultado como steps de execução distintos (google_search_call e google_search_result), expondo exatamente quais dados o modelo recuperou.

Além disso, a API retorna citações inline. Em vez de mapear índices de um objeto de metadados separado, o item de texto na etapa model_output contém a própria matriz annotations que se vincula diretamente à fonte.

Python

from google import genai

client = genai.Client()

interaction = client.interactions.create(
    model="gemini-3.8-flash",
    input="Who won Euro 2024?",
    tools=[{"type": "google_search"}],
)

for step in interaction.steps:
    if step.type == "google_search_result":
        print(f"Search Suggestions: {step.result[0].search_suggestions}")
    elif step.type == "model_output":
        print(f"Answer: {step.content[0].text}")
        if step.content[0].annotations:
            for anno in step.content[0].annotations:
                print(f"Citation: {anno.title} ({anno.uri})")

JavaScript

import { GoogleGenAI } from '@google/genai';

const client = new GoogleGenAI({});

const interaction = await client.interactions.create({
    model: 'gemini-3.8-flash',
    input: 'Who won Euro 2024?',
    tools: [{ type: 'google_search' }]
});

for (const step of interaction.steps) {
    if (step.type === 'google_search_result') {
        console.log(`Search Suggestions: ${step.result[0].search_suggestions}`);
    } else if (step.type === 'model_output') {
        console.log(`Answer: ${step.content[0].text}`);
        if (step.content[0].annotations) {
            for (const anno of step.content[0].annotations) {
                console.log(`Citation: ${anno.title} (${anno.uri})`);
            }
        }
    }
}

Java

import com.google.genai.Client;
import com.google.genai.gaos.models.interactions.Annotation;
import com.google.genai.gaos.models.interactions.Content;
import com.google.genai.gaos.models.interactions.CreateModelInteraction;
import com.google.genai.gaos.models.interactions.GoogleSearch;
import com.google.genai.gaos.models.interactions.GoogleSearchResult;
import com.google.genai.gaos.models.interactions.GoogleSearchResultStep;
import com.google.genai.gaos.models.interactions.Interaction;
import com.google.genai.gaos.models.interactions.InteractionsInput;
import com.google.genai.gaos.models.interactions.Model;
import com.google.genai.gaos.models.interactions.ModelOutputStep;
import com.google.genai.gaos.models.interactions.Step;
import com.google.genai.gaos.models.interactions.TextContent;
import com.google.genai.gaos.models.interactions.URLCitation;
import com.google.genai.gaos.models.operations.CreateInteractionRequestBody;
import java.util.Arrays;
import java.util.Collections;

Client client = new Client();

CreateModelInteraction request =
    CreateModelInteraction.builder()
        .model(Model.of("gemini-3.8-flash"))
        .input(InteractionsInput.of("Who won Euro 2024?"))
        .tools(Arrays.asList(GoogleSearch.builder().build()))
        .build();

Interaction interaction =
    client.interactions.create(CreateInteractionRequestBody.of(request)).interaction().get();

for (Step step : interaction.steps().orElse(Collections.emptyList())) {
  if (step instanceof GoogleSearchResultStep) {
    GoogleSearchResultStep searchStep = (GoogleSearchResultStep) step;
    for (GoogleSearchResult res : searchStep.result().orElse(Collections.emptyList())) {
      System.out.println("Search Suggestions: " + res.searchSuggestions().orElse(""));
    }
  } else if (step instanceof ModelOutputStep) {
    ModelOutputStep modelOutput = (ModelOutputStep) step;
    for (Content contentBlock : modelOutput.content().orElse(Collections.emptyList())) {
      if (contentBlock instanceof TextContent) {
        TextContent textContent = (TextContent) contentBlock;
        System.out.println("Answer: " + textContent.text().orElse(""));
        for (Annotation anno : textContent.annotations().orElse(Collections.emptyList())) {
          if (anno instanceof URLCitation) {
            URLCitation cit = (URLCitation) anno;
            System.out.println(
                "Citation: " + cit.title().orElse("") + " (" + cit.url().orElse("") + ")");
          }
        }
      }
    }
  }
}

Go

package main

import (
    "context"
    "fmt"
    "log"

    "google.golang.org/genai"
    "google.golang.org/genai/interactions/models/interactions"
    "google.golang.org/genai/interactions/models/operations"
)

func main() {
    ctx := context.Background()
    client, err := genai.NewClient(ctx, nil)
    if err != nil {
        log.Fatal(err)
    }

    res, err := client.Interactions.Create(ctx, operations.CreateInteractionRequest{
        Body: operations.NewCreateInteractionRequestBody(interactions.CreateModelInteraction{
            Model: interactions.Model("gemini-3.8-flash"),
            Input: interactions.NewInteractionsInput("Who won Euro 2024?"),
            Tools: []interactions.Tool{
                interactions.NewTool(interactions.GoogleSearch{}),
            },
        }),
    })
    if err != nil {
        log.Fatal(err)
    }

    for _, step := range res.Interaction.Steps {
        if searchStep := step.GoogleSearchResultStep; searchStep != nil {
            for _, r := range searchStep.Result {
                if r.SearchSuggestions != nil {
                    fmt.Println("Search Suggestions:", *r.SearchSuggestions)
                }
            }
        } else if modelOutput := step.ModelOutputStep; modelOutput != nil {
            for _, contentBlock := range modelOutput.Content {
                if textContent := contentBlock.TextContent; textContent != nil {
                    fmt.Println("Answer:", textContent.Text)
                    for _, anno := range textContent.Annotations {
                        if cit := anno.URLCitation; cit != nil {
                            fmt.Printf("Citation: %s (%s)\n", cit.GetTitle(), cit.GetURL())
                        }
                    }
                }
            }
        }
    }
}

REST

# Request
curl -X POST "https://generativelanguage.googleapis.com/v1beta/interactions" \
-H "Content-Type: application/json" \
-H "x-goog-api-key: $GEMINI_API_KEY" \
-d '{
    "model": "gemini-3.8-flash",
    "input": "Who won Euro 2024?",
    "tools": [{"type": "google_search"}]
}'

# Response (showing grounding)
{
  "id": "int_grounded",
  "steps": [
    {
      "type": "user_input",
      "status": "done",
      "content": [{ "type": "text", "text": "Who won Euro 2024?" }]
    },
    {
      "type": "google_search_call",
      "status": "done",
      "content": [{ "type": "text", "text": "UEFA Euro 2024 winner" }]
    },
    {
      "type": "google_search_result",
      "status": "done",
      "content": [
        {
          "type": "text",
          "text": "Spain won Euro 2024..."
        }
      ]
    },
    {
      "type": "model_output",
      "status": "done",
      "content": [
        {
          "type": "text",
          "text": "Spain won Euro 2024, defeating England 2-1.",
          "annotations": [
            {
              "start_index": 0,
              "end_index": 42,
              "uri": "https://vertexaisearch...",
              "title": "aljazeera.com"
            }
          ]
        }
      ]
    }
  ]
}

Chamadas de função

A estrutura das chamadas de função e dos resultados também mudou para se adequar ao esquema de etapas.

Antes (`generateContent`)

Em generateContent, a resposta retorna chamadas de função dentro dos candidatos.* {Python}

```python
from google import genai
from google.genai import types

client = genai.Client()

response = client.models.generate_content(
    model="gemini-2.5-flash-lite",
    contents="What's the weather in Boston?",
    config=types.GenerateContentConfig(tools=[weather_tool]),
)

function_call = response.candidates[0].content.parts[0].function_call
print(f"Requested tool: {function_call.name}")

result = "52°F and rain"

response = client.models.generate_content(
    model="gemini-2.5-flash-lite",
    contents=[
        types.Content(
            role="user",
            parts=[
                types.Part.from_text(text="What's the weather in Boston?")
            ],
        ),
        response.candidates[0].content,
        types.Content(
            role="user",
            parts=[
                types.Part.from_function_response(
                    name=function_call.name,
                    response={"result": result},
                )
            ],
        ),
    ],
    config=types.GenerateContentConfig(tools=[weather_tool]),
)
print(response.text)
```

JavaScript

import { GoogleGenAI } from '@google/genai';

const client = new GoogleGenAI({});

let response = await client.models.generateContent({
    model: 'gemini-2.5-flash-lite',
    contents: "What's the weather in Boston?",
    config: { tools: [weatherTool] }
});

const functionCall = response.candidates[0].content.parts[0].functionCall;
console.log(`Requested tool: ${functionCall.name}`);

const result = "52°F and rain";

response = await client.models.generateContent({
    model: 'gemini-2.5-flash-lite',
    contents: [
        { role: 'user', parts: [{ text: "What's the weather in Boston?" }] },
        response.candidates[0].content,
        {
            role: 'user',
            parts: [{
                functionResponse: {
                    name: functionCall.name,
                    response: { result: result }
                }
            }]
        }
    ],
    config: { tools: [weatherTool] }
});
console.log(response.text);

Java

import com.google.genai.Client;
import com.google.genai.types.Content;
import com.google.genai.types.FunctionCall;
import com.google.genai.types.FunctionDeclaration;
import com.google.genai.types.GenerateContentConfig;
import com.google.genai.types.GenerateContentResponse;
import com.google.genai.types.Part;
import com.google.genai.types.Schema;
import com.google.genai.types.Tool;
import com.google.genai.types.Type;
import java.util.Arrays;
import java.util.Map;

Client client = new Client();

FunctionDeclaration weatherFunc =
    FunctionDeclaration.builder()
        .name("get_weather")
        .description("Gets weather")
        .parameters(
            Schema.builder()
                .type(Type.Known.OBJECT)
                .properties(Map.of("location", Schema.builder().type(Type.Known.STRING).build()))
                .build())
        .build();

Tool weatherTool = Tool.builder().functionDeclarations(Arrays.asList(weatherFunc)).build();

GenerateContentResponse response =
    client.models.generateContent(
        "gemini-2.5-flash-lite",
        "What's the weather in Boston?",
        GenerateContentConfig.builder().tools(Arrays.asList(weatherTool)).build());

FunctionCall functionCall = response.functionCalls().get(0);
System.out.println("Requested tool: " + functionCall.name().orElse(""));

String result = "52°F and rain";

GenerateContentResponse finalResponse =
    client.models.generateContent(
        "gemini-2.5-flash-lite",
        Arrays.asList(
            Content.builder()
                .role("user")
                .parts(Arrays.asList(Part.fromText("What's the weather in Boston?")))
                .build(),
            response.candidates().get().get(0).content().get(),
            Content.builder()
                .role("user")
                .parts(
                    Arrays.asList(
                        Part.fromFunctionResponse(
                            functionCall.name().orElse(""), Map.of("result", result))))
                .build()),
        GenerateContentConfig.builder().tools(Arrays.asList(weatherTool)).build());
System.out.println(finalResponse.text());

Go

package main

import (
    "context"
    "fmt"
    "log"

    "google.golang.org/genai"
)

func main() {
    ctx := context.Background()
    client, err := genai.NewClient(ctx, nil)
    if err != nil {
        log.Fatal(err)
    }

    weatherTool := &genai.Tool{
        FunctionDeclarations: []*genai.FunctionDeclaration{
            {
                Name:        "get_weather",
                Description: "Gets weather",
                Parameters: &genai.Schema{
                    Type: genai.TypeObject,
                    Properties: map[string]*genai.Schema{
                        "location": {Type: genai.TypeString},
                    },
                },
            },
        },
    }

    config := &genai.GenerateContentConfig{
        Tools: []*genai.Tool{weatherTool},
    }

    response, err := client.Models.GenerateContent(
        ctx,
        "gemini-2.5-flash-lite",
        genai.Text("What's the weather in Boston?"),
        config,
    )
    if err != nil {
        log.Fatal(err)
    }

    calls := response.FunctionCalls()
    if len(calls) > 0 {
        functionCall := calls[0]
        fmt.Println("Requested tool:", functionCall.Name)

        result := "52°F and rain"
        history := []*genai.Content{
            genai.NewContentFromText("What's the weather in Boston?", genai.RoleUser),
            response.Candidates[0].Content,
            genai.NewContentFromParts([]*genai.Part{
                genai.NewPartFromFunctionResponse(functionCall.Name, map[string]any{"result": result}),
            }, genai.RoleUser),
        }

        finalResponse, err := client.Models.GenerateContent(ctx, "gemini-2.5-flash-lite", history, config)
        if err != nil {
            log.Fatal(err)
        }
        fmt.Println(finalResponse.Text())
    }
}

REST

# Request
curl -X POST "https://generativelanguage.googleapis.com/v1beta/models/gemini-2.5-flash-lite:generateContent" \
-H "Content-Type: application/json" \
-H "x-goog-api-key: $GEMINI_API_KEY" \
-d '{
    "contents": [{
        "parts": [{
            "text": "What is the weather like in Boston, MA?"
        }]
    }],
    "tools": [{
        "functionDeclarations": [{
            "name": "get_weather",
            "description": "Get the current weather",
            "parameters": {
                "type": "OBJECT",
                "properties": {
                    "location": {"type": "STRING"}
                },
                "required": ["location"]
            }
        }]
    }]
}'

# Response
{
  "candidates": [
    {
      "content": {
        "parts": [
          {
            "functionCall": {
              "name": "get_weather",
              "args": { "location": "Boston, MA" }
            }
          }
        ],
        "role": "model"
      },
      "finishReason": "STOP",
      "index": 0
    }
  ]
}

Depois (API Interactions)

As chamadas e os resultados das ferramentas agora são etapas distintas na linha do tempo.

Python

from google import genai

client = genai.Client()

weather_tool = {
    "type": "function",
    "name": "get_weather",
    "description": "Gets weather",
    "parameters": {
        "type": "object",
        "properties": {
            "location": {"type": "string"}
        },
    },
}

interaction = client.interactions.create(
    model="gemini-3.8-flash",
    input="What's the weather in Boston?",
    tools=[weather_tool],
)

for step in interaction.steps:
    if step.type == "function_call":
        print(f"Executing {step.name} for {step.arguments}")

        result = "52°F and rain"

        interaction = client.interactions.create(
            model="gemini-3.8-flash",
            previous_interaction_id=interaction.id,
            input=[
                {
                    "type": "function_result",
                    "call_id": step.id,
                    "name": step.name,
                    "result": [{"type": "text", "text": result}],
                }
            ],
        )
        print(interaction.output_text)

JavaScript

import { GoogleGenAI } from '@google/genai';

const client = new GoogleGenAI({});

const weatherTool = {
    type: "function",
    name: "get_weather",
    description: "Get weather for a location",
    parameters: {
        type: "object",
        properties: {
            location: { type: "string" }
        },
        required: ["location"]
    }
};

const interaction = await client.interactions.create({
    model: 'gemini-3.8-flash',
    input: "What's the weather in Boston?",
    tools: [weatherTool]
});

for (const step of interaction.steps) {
    if (step.type === 'function_call') {
        console.log(`Executing ${step.name} for ${JSON.stringify(step.arguments)}`);

        const result = "52°F and rain";

        const nextInteraction = await client.interactions.create({
            model: 'gemini-3.8-flash',
            previous_interaction_id: interaction.id,
            input: [
                {
                    type: 'function_result',
                    call_id: step.id,
                    name: step.name,
                    result: [{ type: 'text', text: result }]
                }
            ]
        });

        console.log(nextInteraction.output_text);
    }
}

Java

import com.google.genai.Client;
import com.google.genai.gaos.models.interactions.CreateModelInteraction;
import com.google.genai.gaos.models.interactions.Function;
import com.google.genai.gaos.models.interactions.FunctionCallStep;
import com.google.genai.gaos.models.interactions.FunctionResultStep;
import com.google.genai.gaos.models.interactions.FunctionResultStepResultUnion;
import com.google.genai.gaos.models.interactions.Interaction;
import com.google.genai.gaos.models.interactions.InteractionsInput;
import com.google.genai.gaos.models.interactions.Model;
import com.google.genai.gaos.models.interactions.Step;
import com.google.genai.gaos.models.interactions.TextContent;
import com.google.genai.gaos.models.operations.CreateInteractionRequestBody;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;

Client client = new Client();

Map<String, Object> properties = new HashMap<>();
properties.put("location", Map.of("type", "string"));

Map<String, Object> parameters = new HashMap<>();
parameters.put("type", "object");
parameters.put("properties", properties);
parameters.put("required", Arrays.asList("location"));

Function weatherTool =
    Function.builder()
        .name("get_weather")
        .description("Gets weather")
        .parameters(parameters)
        .build();

CreateModelInteraction request =
    CreateModelInteraction.builder()
        .model(Model.of("gemini-3.8-flash"))
        .input(InteractionsInput.of("What's the weather in Boston?"))
        .tools(Arrays.asList(weatherTool))
        .build();

Interaction interaction =
    client.interactions.create(CreateInteractionRequestBody.of(request)).interaction().get();

for (Step step : interaction.steps().orElse(Collections.emptyList())) {
  if (step instanceof FunctionCallStep) {
    FunctionCallStep fcStep = (FunctionCallStep) step;
    System.out.println(
        "Executing "
            + fcStep.name().orElse("")
            + " for "
            + fcStep.arguments().orElse(Collections.emptyMap()));

    String result = "52°F and rain";

    FunctionResultStep funcResult =
        FunctionResultStep.builder()
            .callId(fcStep.id().orElse(""))
            .name(fcStep.name().orElse(""))
            .result(
                FunctionResultStepResultUnion.of(
                    Arrays.asList(TextContent.builder().text(result).build())))
            .build();

    CreateModelInteraction nextRequest =
        CreateModelInteraction.builder()
            .model(Model.of("gemini-3.8-flash"))
            .previousInteractionId(interaction.id().orElse(""))
            .input(InteractionsInput.ofStep(Arrays.asList(funcResult)))
            .build();

    Interaction nextInteraction =
        client.interactions.create(CreateInteractionRequestBody.of(nextRequest)).interaction().get();
    System.out.println(nextInteraction.outputText().orElse(""));
  }
}

Go

package main

import (
    "context"
    "fmt"
    "log"

    "google.golang.org/genai"
    "google.golang.org/genai/interactions/models/interactions"
    "google.golang.org/genai/interactions/models/operations"
)

func main() {
    ctx := context.Background()
    client, err := genai.NewClient(ctx, nil)
    if err != nil {
        log.Fatal(err)
    }

    weatherTool := interactions.NewTool(interactions.Function{
        Name:        genai.Ptr("get_weather"),
        Description: genai.Ptr("Gets weather"),
        Parameters: map[string]any{
            "type": "object",
            "properties": map[string]any{
                "location": map[string]any{"type": "string"},
            },
            "required": []string{"location"},
        },
    })

    res, err := client.Interactions.Create(ctx, operations.CreateInteractionRequest{
        Body: operations.NewCreateInteractionRequestBody(interactions.CreateModelInteraction{
            Model: interactions.Model("gemini-3.8-flash"),
            Input: interactions.NewInteractionsInput("What's the weather in Boston?"),
            Tools: []interactions.Tool{weatherTool},
        }),
    })
    if err != nil {
        log.Fatal(err)
    }

    for _, step := range res.Interaction.Steps {
        if fcStep := step.FunctionCallStep; fcStep != nil {
            fmt.Printf("Executing %s for %v\n", fcStep.Name, fcStep.Arguments)

            result := "52°F and rain"
            funcResult := interactions.NewStep(interactions.FunctionResultStep{
                CallID: fcStep.ID,
                Name:   genai.Ptr(fcStep.Name),
                Result: interactions.NewFunctionResultStepResultUnion([]interactions.FunctionResultSubcontent{
                    interactions.NewFunctionResultSubcontent(interactions.TextContent{Text: result}),
                }),
            })

            nextRes, err := client.Interactions.Create(ctx, operations.CreateInteractionRequest{
                Body: operations.NewCreateInteractionRequestBody(interactions.CreateModelInteraction{
                    Model:                 interactions.Model("gemini-3.8-flash"),
                    PreviousInteractionID: res.Interaction.ID,
                    Input:                 interactions.NewInteractionsInput([]interactions.Step{funcResult}),
                }),
            })
            if err != nil {
                log.Fatal(err)
            }
            if nextRes.Interaction.OutputText != nil {
                fmt.Println(*nextRes.Interaction.OutputText)
            }
        }
    }
}

REST

# Initial Request
curl -X POST "https://generativelanguage.googleapis.com/v1beta/interactions" \
-H "Content-Type: application/json" \
-H "x-goog-api-key: $GEMINI_API_KEY" \
-d '{
    "model": "gemini-3.8-flash",
    "input": "What's the weather in Boston?",
    "tools": [{
        "type": "function",
        "name": "get_weather",
        "description": "Get weather for a location",
        "parameters": {
            "type": "object",
            "properties": {
                "location": { "type": "string" }
            },
            "required": ["location"]
        }
    }]
}'

# Response (requires action)
{
  "id": "int_001",
  "status": "requires_action",
  "steps": [
    {
      "type": "user_input",
      "status": "done",
      "content": [
        { "type": "text", "text": "What's the weather in Boston?" }
      ]
    },
    {
      "type": "function_call",
      "status": "waiting",
      "id": "fc_1",
      "name": "get_weather",
      "arguments": { "location": "Boston, MA" }
    }
  ]
}

# Submit Tool Result Request
curl -X POST "https://generativelanguage.googleapis.com/v1beta/interactions" \
-H "Content-Type: application/json" \
-H "x-goog-api-key: $GEMINI_API_KEY" \
-d '{
    "model": "gemini-3.8-flash",
    "previous_interaction_id": "int_001",
    "input": {
        "type": "function_result",
        "call_id": "fc_1",
        "name": "get_weather",
        "result": [
            { "type": "text", "text": "52°F with rain" }
        ]
    }
}'

# Final Response
{
  "id": "int_002",
  "status": "completed",
  "steps": [
    {
      "type": "function_result",
      "call_id": "fc_1",
      "name": "get_weather",
      "result": [
        { "type": "text", "text": "52°F with rain" }
      ]
    },
    {
      "type": "model_output",
      "status": "done",
      "content": [
        { "type": "text", "text": "It's 52°F with rain in Boston." }
      ]
    }
  ]
}

Streaming

Uma diferença importante no streaming é que a API Interactions usa o mesmo endpoint com "stream": true no corpo da solicitação, enquanto a API generateContent exigia a chamada de um endpoint dedicado (:streamGenerateContent).

Além disso, os eventos de streaming agora usam tipos especializados para monitorar o ciclo de vida da interação e acompanhar as etapas de execução ao longo da linha do tempo.

Antes (`generateContentStream`)

Com generateContent, você consome um stream de blocos de resposta.

Python

from google import genai

client = genai.Client()

response = client.models.generate_content_stream(
    model="gemini-2.5-flash-lite", contents="Tell me a story"
)
for chunk in response:
    print(chunk.text, end="")

JavaScript

const responseStream = await client.models.generateContentStream({
    model: 'gemini-2.5-flash-lite',
    contents: 'Tell me a story',
});
for await (const chunk of responseStream) {
    process.stdout.write(chunk.text);
}

Java

import com.google.genai.Client;
import com.google.genai.ResponseStream;
import com.google.genai.types.GenerateContentResponse;

Client client = new Client();

try (ResponseStream<GenerateContentResponse> responseStream =
    client.models.generateContentStream("gemini-2.5-flash-lite", "Tell me a story", null)) {
  for (GenerateContentResponse chunk : responseStream) {
    System.out.print(chunk.text());
  }
}

Go

package main

import (
    "context"
    "fmt"
    "log"

    "google.golang.org/genai"
)

func main() {
    ctx := context.Background()
    client, err := genai.NewClient(ctx, nil)
    if err != nil {
        log.Fatal(err)
    }

    for chunk, err := range client.Models.GenerateContentStream(
        ctx,
        "gemini-2.5-flash-lite",
        genai.Text("Tell me a story"),
        nil,
    ) {
        if err != nil {
            log.Fatal(err)
        }
        fmt.Print(chunk.Text())
    }
}

REST

# Request
curl -X POST "https://generativelanguage.googleapis.com/v1beta/models/gemini-2.5-flash-lite:streamGenerateContent" \
-H "Content-Type: application/json" \
-H "x-goog-api-key: $GEMINI_API_KEY" \
-d '{
    "contents": [{
        "parts": [{
            "text": "Tell me a story"
        }]
    }]
}'

# Response stream
event: content.start
data: {"event_type": "content.start", "index": 0, "content": {"type": "thought"}}
event: content.delta
data: {"event_type": "content.delta", "index": 0, "delta": {"type": "thought_summary", "text": "User wants an explanation."}}
event: content.stop
data: {"event_type": "content.stop", "index": 0}
event: content.start
data: {"event_type": "content.start", "index": 1, "content": {"type": "text"}}
event: content.delta
data: {"event_type": "content.delta", "index": 1, "delta": {"type": "text", "text": "Hello"}}
event: content.stop
data: {"event_type": "content.stop", "index": 1}

Depois (API Interactions)

Na API Interactions, o streaming usa eventos enviados pelo servidor (SSE) e tipos de delta especializados para representar as etapas de execução conforme elas acontecem.

Python

from google import genai

client = genai.Client()

stream = client.interactions.create(
    model="gemini-3.8-flash",
    input="Tell me a story",
    stream=True,
)

for event in stream:
    if event.event_type == "step.delta" and event.delta:
        if getattr(event.delta, "type", None) == "text" and getattr(event.delta, "text", None):
            print(event.delta.text, end="", flush=True)
    elif event.event_type == "interaction.completed":
        print(f"\n\n--- Stream Finished ---")

JavaScript

import { GoogleGenAI } from '@google/genai';

const client = new GoogleGenAI({});

const stream = await client.interactions.create({
    model: 'gemini-3.8-flash',
    input: 'Tell me a story',
    stream: true,
});

for await (const event of stream) {
    if (event.event_type === 'step.delta' && event.delta) {
        if (event.delta.type === 'text' && event.delta.text) {
            process.stdout.write(event.delta.text);
        }
    } else if (event.event_type === 'interaction.completed') {
        console.log('\n\n--- Stream Finished ---');
    }
}

Java

import com.google.genai.Client;
import com.google.genai.gaos.models.interactions.CreateModelInteraction;
import com.google.genai.gaos.models.interactions.InteractionCompletedEvent;
import com.google.genai.gaos.models.interactions.InteractionSSEEvent;
import com.google.genai.gaos.models.interactions.InteractionSSEStreamEvent;
import com.google.genai.gaos.models.interactions.InteractionsInput;
import com.google.genai.gaos.models.interactions.Model;
import com.google.genai.gaos.models.interactions.StepDelta;
import com.google.genai.gaos.models.interactions.TextDelta;
import com.google.genai.gaos.models.operations.CreateInteractionRequestBody;
import com.google.genai.gaos.utils.EventStream;

Client client = new Client();

CreateModelInteraction request =
    CreateModelInteraction.builder()
        .model(Model.of("gemini-3.8-flash"))
        .input(InteractionsInput.of("Tell me a story"))
        .stream(true)
        .build();

try (EventStream<InteractionSSEStreamEvent> stream =
    client.interactions.create(CreateInteractionRequestBody.of(request)).events()) {
  for (InteractionSSEStreamEvent streamEvent : stream) {
    if (streamEvent.data().isPresent()) {
      InteractionSSEEvent event = streamEvent.data().get();
      if (event instanceof StepDelta) {
        StepDelta stepDelta = (StepDelta) event;
        if (stepDelta.delta().isPresent() && stepDelta.delta().get() instanceof TextDelta) {
          TextDelta textDelta = (TextDelta) stepDelta.delta().get();
          System.out.print(textDelta.text().orElse(""));
        }
      } else if (event instanceof InteractionCompletedEvent) {
        System.out.println("\n\n--- Stream Finished ---");
      }
    }
  }
}

Go

package main

import (
    "context"
    "fmt"
    "log"

    "google.golang.org/genai"
    "google.golang.org/genai/interactions/models/interactions"
    "google.golang.org/genai/interactions/models/operations"
)

func main() {
    ctx := context.Background()
    client, err := genai.NewClient(ctx, nil)
    if err != nil {
        log.Fatal(err)
    }

    res, err := client.Interactions.Create(ctx, operations.CreateInteractionRequest{
        Body: operations.NewCreateInteractionRequestBody(interactions.CreateModelInteraction{
            Model:  interactions.Model("gemini-3.8-flash"),
            Input:  interactions.NewInteractionsInput("Tell me a story"),
            Stream: genai.Ptr(true),
        }),
    })
    if err != nil {
        log.Fatal(err)
    }
    stream := res.InteractionSSEStreamEvent
    defer stream.Close()

    for stream.Next() {
        event := stream.Value()
        if stepDelta := event.GetDataStepDelta(); stepDelta != nil {
            if textDelta := stepDelta.GetDeltaText(); textDelta != nil {
                fmt.Print(textDelta.GetText())
            }
        } else if event.GetDataInteractionCompleted() != nil {
            fmt.Println("\n\n--- Stream Finished ---")
        }
    }
    if err := stream.Err(); err != nil {
        log.Fatal(err)
    }
}

REST

# Exemplo de saída de stream SSE event: interaction.created data: {"interaction": {"id": "int_xyz", "status": "in_progress"}, "event_type": "interaction.created"} event: interaction.status_update data: {"interaction_id": "int_xyz", "status": "in_progress", "event_type": "interaction.status_update"} event: step.start data: {"index": 0, "step": {"type": "thought"}, "event_type": "step.start"} event: step.delta data: {"index": 0, "delta": {"type": "thought_summary", "content": {"type": "text", "text": "User wants an explanation."}}, "event_type": "step.delta"} event: step.stop data: {"index": 0, "event_type": "step.stop"} event: step.start data: {"index": 1, "step": {"type": "model_output"}, "event_type": "step.start"} event: step.delta data: {"index": 1, "delta": {"type": "text", "text": "Hello"}, "event_type": "step.delta"} event: step.stop data: {"index": 1, "event_type": "step.stop"} event: interaction.completed data: {"interaction": {"id": "int_xyz", "status": "completed", "usage": {"total_input_tokens": 10, "total_output_tokens": 5, "total_tokens": 15}}, "event_type": "interaction.completed"} ```

Ferramentas de streaming e chamadas de função

O comportamento das ferramentas no stream mudou significativamente em relação ao generateContent para oferecer controle e visibilidade mais granulares.

Antes (`generateContent`)

Com generateContent, as chamadas de função de streaming chegavam completas em um único bloco. Não foi possível ver os argumentos sendo gerados em tempo real, então o gerenciador simplesmente verificou se havia um objeto functionCall completo.

Python

from google import genai
from google.genai import types

client = genai.Client()

stream = client.models.generate_content_stream(
    model="gemini-2.5-flash-lite",
    contents="What's the weather in Boston?",
    config=types.GenerateContentConfig(tools=[weather_tool]),
)

for chunk in stream:
    # Function calls arrived complete — no partial arguments
    if chunk.candidates[0].content.parts[0].function_call:
        fc = chunk.candidates[0].content.parts[0].function_call
        print(f"Call: {fc.name}({fc.args})")
    elif chunk.text:
        print(chunk.text, end="")

JavaScript

import { GoogleGenAI } from '@google/genai';

const client = new GoogleGenAI({});

const stream = await client.models.generateContentStream({
    model: 'gemini-2.5-flash-lite',
    contents: "What's the weather in Boston?",
    config: { tools: [weatherTool] }
});

for await (const chunk of stream) {
    const part = chunk.candidates[0].content.parts[0];
    if (part.functionCall) {
        console.log(`Call: ${part.functionCall.name}(${JSON.stringify(part.functionCall.args)})`);
    } else if (part.text) {
        process.stdout.write(part.text);
    }
}

Java

import com.google.genai.Client;
import com.google.genai.ResponseStream;
import com.google.genai.types.FunctionCall;
import com.google.genai.types.FunctionDeclaration;
import com.google.genai.types.GenerateContentConfig;
import com.google.genai.types.GenerateContentResponse;
import com.google.genai.types.Schema;
import com.google.genai.types.Tool;
import com.google.genai.types.Type;
import java.util.Arrays;
import java.util.Map;

Client client = new Client();

FunctionDeclaration weatherFunc =
    FunctionDeclaration.builder()
        .name("get_weather")
        .description("Gets weather")
        .parameters(
            Schema.builder()
                .type(Type.Known.OBJECT)
                .properties(Map.of("location", Schema.builder().type(Type.Known.STRING).build()))
                .build())
        .build();

Tool weatherTool = Tool.builder().functionDeclarations(Arrays.asList(weatherFunc)).build();

try (ResponseStream<GenerateContentResponse> stream =
    client.models.generateContentStream(
        "gemini-2.5-flash-lite",
        "What's the weather in Boston?",
        GenerateContentConfig.builder().tools(Arrays.asList(weatherTool)).build())) {
  for (GenerateContentResponse chunk : stream) {
    if (chunk.functionCalls() != null && !chunk.functionCalls().isEmpty()) {
      FunctionCall fc = chunk.functionCalls().get(0);
      System.out.println("Call: " + fc.name().orElse("") + "(" + fc.args().orElse(Map.of()) + ")");
    } else if (chunk.text() != null) {
      System.out.print(chunk.text());
    }
  }
}

Go

package main

import (
    "context"
    "fmt"
    "log"

    "google.golang.org/genai"
)

func main() {
    ctx := context.Background()
    client, err := genai.NewClient(ctx, nil)
    if err != nil {
        log.Fatal(err)
    }

    weatherTool := &genai.Tool{
        FunctionDeclarations: []*genai.FunctionDeclaration{
            {
                Name:        "get_weather",
                Description: "Gets weather",
                Parameters: &genai.Schema{
                    Type: genai.TypeObject,
                    Properties: map[string]*genai.Schema{
                        "location": {Type: genai.TypeString},
                    },
                },
            },
        },
    }

    for chunk, err := range client.Models.GenerateContentStream(
        ctx,
        "gemini-2.5-flash-lite",
        genai.Text("What's the weather in Boston?"),
        &genai.GenerateContentConfig{
            Tools: []*genai.Tool{weatherTool},
        },
    ) {
        if err != nil {
            log.Fatal(err)
        }
        if calls := chunk.FunctionCalls(); len(calls) > 0 {
            fc := calls[0]
            fmt.Printf("Call: %s(%v)\n", fc.Name, fc.Args)
        } else if text := chunk.Text(); text != "" {
            fmt.Print(text)
        }
    }
}

REST

# Request
curl -X POST "https://generativelanguage.googleapis.com/v1beta/models/gemini-2.5-flash-lite:streamGenerateContent" \
-H "Content-Type: application/json" \
-H "x-goog-api-key: $GEMINI_API_KEY" \
-d '{
    "contents": [{"parts": [{"text": "What is the weather in Boston?"}]}],
    "tools": [{"functionDeclarations": [{"name": "get_weather", "parameters": {"type": "OBJECT", "properties": {"location": {"type": "STRING"}}}}]}]
}'

# Response stream — function call arrives complete in one chunk
{"candidates": [{"content": {"parts": [{"functionCall": {"name": "get_weather", "args": {"location": "Boston, MA"}}}]}}]}

Depois (API Interactions)

A API Interactions transmite argumentos de chamada de função caractere por caractere como eventos arguments_delta. Todo o ciclo de vida da ferramenta (pensamento, chamada, resultado e saída) ocorre como uma série de etapas distintas.

Python

from google import genai

client = genai.Client()

stream = client.interactions.create(
    model="gemini-3.8-flash",
    input="What's the weather in Boston?",
    tools=[get_weather_tool],
    stream=True,
)

for event in stream:
    if event.event_type == "step.start" and event.step:
        if getattr(event.step, "type", None) == "function_call":
            print(f"Calling: {event.step.name}")
    elif event.event_type == "step.delta" and event.delta:
        if getattr(event.delta, "type", None) == "arguments_delta":
            print(f"  args: {event.delta.arguments}")
        elif getattr(event.delta, "type", None) == "text" and getattr(event.delta, "text", None):
            print(event.delta.text, end="")
    elif event.event_type == "interaction.completed":
        print("\n--- Done ---")

JavaScript

import { GoogleGenAI } from '@google/genai';

const client = new GoogleGenAI({});

const stream = await client.interactions.create({
    model: 'gemini-3.8-flash',
    input: "What's the weather in Boston?",
    tools: [getWeatherTool],
    stream: true,
});

for await (const event of stream) {
    if (event.event_type === 'step.start' && event.step) {
        if (event.step.type === 'function_call') {
            console.log(`Calling: ${event.step.name}`);
        }
    } else if (event.event_type === 'step.delta' && event.delta) {
        if (event.delta.type === 'arguments_delta' && event.delta.arguments) {
            console.log(`  args: ${event.delta.arguments}`);
        } else if (event.delta.type === 'text' && event.delta.text) {
            process.stdout.write(event.delta.text);
        }
    } else if (event.event_type === 'interaction.completed') {
        console.log('\n--- Done ---');
    }
}

Java

import com.google.genai.Client;
import com.google.genai.gaos.models.interactions.ArgumentsDelta;
import com.google.genai.gaos.models.interactions.CreateModelInteraction;
import com.google.genai.gaos.models.interactions.Function;
import com.google.genai.gaos.models.interactions.FunctionCallStep;
import com.google.genai.gaos.models.interactions.InteractionCompletedEvent;
import com.google.genai.gaos.models.interactions.InteractionSSEEvent;
import com.google.genai.gaos.models.interactions.InteractionSSEStreamEvent;
import com.google.genai.gaos.models.interactions.InteractionsInput;
import com.google.genai.gaos.models.interactions.Model;
import com.google.genai.gaos.models.interactions.StepDelta;
import com.google.genai.gaos.models.interactions.StepDeltaData;
import com.google.genai.gaos.models.interactions.StepStart;
import com.google.genai.gaos.models.interactions.TextDelta;
import com.google.genai.gaos.models.operations.CreateInteractionRequestBody;
import com.google.genai.gaos.utils.EventStream;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Map;

Client client = new Client();

Map<String, Object> properties = new HashMap<>();
properties.put("location", Map.of("type", "string"));

Map<String, Object> parameters = new HashMap<>();
parameters.put("type", "object");
parameters.put("properties", properties);
parameters.put("required", Arrays.asList("location"));

Function getWeatherTool =
    Function.builder()
        .name("get_weather")
        .description("Gets weather")
        .parameters(parameters)
        .build();

CreateModelInteraction request =
    CreateModelInteraction.builder()
        .model(Model.of("gemini-3.8-flash"))
        .input(InteractionsInput.of("What's the weather in Boston?"))
        .tools(Arrays.asList(getWeatherTool))
        .stream(true)
        .build();

try (EventStream<InteractionSSEStreamEvent> stream =
    client.interactions.create(CreateInteractionRequestBody.of(request)).events()) {
  for (InteractionSSEStreamEvent streamEvent : stream) {
    if (streamEvent.data().isPresent()) {
      InteractionSSEEvent event = streamEvent.data().get();
      if (event instanceof StepStart) {
        StepStart stepStart = (StepStart) event;
        if (stepStart.step().isPresent() && stepStart.step().get() instanceof FunctionCallStep) {
          FunctionCallStep fcStep = (FunctionCallStep) stepStart.step().get();
          System.out.println("Calling: " + fcStep.name().orElse(""));
        }
      } else if (event instanceof StepDelta) {
        StepDelta stepDelta = (StepDelta) event;
        if (stepDelta.delta().isPresent()) {
          StepDeltaData delta = stepDelta.delta().get();
          if (delta instanceof ArgumentsDelta) {
            System.out.println("  args: " + ((ArgumentsDelta) delta).arguments().orElse(""));
          } else if (delta instanceof TextDelta) {
            System.out.print(((TextDelta) delta).text().orElse(""));
          }
        }
      } else if (event instanceof InteractionCompletedEvent) {
        System.out.println("\n--- Done ---");
      }
    }
  }
}

Go

package main

import (
    "context"
    "fmt"
    "log"

    "google.golang.org/genai"
    "google.golang.org/genai/interactions/models/interactions"
    "google.golang.org/genai/interactions/models/operations"
)

func main() {
    ctx := context.Background()
    client, err := genai.NewClient(ctx, nil)
    if err != nil {
        log.Fatal(err)
    }

    getWeatherTool := interactions.NewTool(interactions.Function{
        Name:        genai.Ptr("get_weather"),
        Description: genai.Ptr("Gets weather"),
        Parameters: map[string]any{
            "type": "object",
            "properties": map[string]any{
                "location": map[string]any{"type": "string"},
            },
            "required": []string{"location"},
        },
    })

    res, err := client.Interactions.Create(ctx, operations.CreateInteractionRequest{
        Body: operations.NewCreateInteractionRequestBody(interactions.CreateModelInteraction{
            Model:  interactions.Model("gemini-3.8-flash"),
            Input:  interactions.NewInteractionsInput("What's the weather in Boston?"),
            Tools:  []interactions.Tool{getWeatherTool},
            Stream: genai.Ptr(true),
        }),
    })
    if err != nil {
        log.Fatal(err)
    }
    stream := res.InteractionSSEStreamEvent
    defer stream.Close()

    for stream.Next() {
        event := stream.Value()
        if stepStart := event.GetDataStepStart(); stepStart != nil {
            if fcStep := stepStart.GetStepFunctionCall(); fcStep != nil {
                fmt.Println("Calling:", fcStep.Name)
            }
        } else if stepDelta := event.GetDataStepDelta(); stepDelta != nil {
            if argsDelta := stepDelta.GetDeltaArgumentsDelta(); argsDelta != nil {
                fmt.Println("  args:", argsDelta.GetArguments())
            } else if textDelta := stepDelta.GetDeltaText(); textDelta != nil {
                fmt.Print(textDelta.GetText())
            }
        } else if event.GetDataInteractionCompleted() != nil {
            fmt.Println("\n--- Done ---")
        }
    }
    if err := stream.Err(); err != nil {
        log.Fatal(err)
    }
}

REST

# Request
curl -X POST "https://generativelanguage.googleapis.com/v1beta/interactions" \
-H "Content-Type: application/json" \
-H "x-goog-api-key: $GEMINI_API_KEY" \
-d '{
    "model": "gemini-3.8-flash",
    "input": "What is the weather in Boston?",
    "tools": [{"type": "function", "name": "get_weather", "parameters": {"type": "object", "properties": {"location": {"type": "string"}}}}],
    "stream": true
}'

# Response stream
// Stream 1: the model calls the function
event: interaction.created
data: {"interaction": {"id": "int_1", "status": "in_progress"}, "event_type": "interaction.created"}

event: interaction.status_update
data: {"interaction_id": "int_1", "status": "in_progress", "event_type": "interaction.status_update"}

// ── Step 0: Thought ──────────────────────────────────
event: step.start
data: {"index": 0, "step": {"type": "thought"}, "event_type": "step.start"}

event: step.delta
data: {"index": 0, "delta": {"type": "thought_summary", "content": {"type": "text", "text": "The user wants weather data for Boston. I'll call the get_weather tool."}}, "event_type": "step.delta"}

event: step.stop
data: {"index": 0, "event_type": "step.stop"}

// ── Step 1: Function Call (arguments streamed) ───────
event: step.start
data: {"index": 1, "step": {"type": "function_call", "id": "fc_1", "name": "get_weather", "arguments": {}}, "event_type": "step.start"}

event: step.delta
data: {"index": 1, "delta": {"type": "arguments_delta", "arguments": "{\"location\": \"Boston, MA\"}"}, "event_type": "step.delta"}

event: step.stop
data: {"index": 1, "event_type": "step.stop"}

// The stream ends with status requires_action: the model needs the tool result.
event: interaction.completed
data: {"interaction": {"id": "int_1", "status": "requires_action", "usage": {"total_input_tokens": 34, "total_output_tokens": 15, "total_tokens": 49}}, "event_type": "interaction.completed"}

event: done
data: [DONE]

// ── (Client submits the tool result) ──────────────────
// The client calls interactions.create with the function_result as input
// and previous_interaction_id set to "int_1". This opens a new stream.

// Stream 2: the model uses the result
event: interaction.created
data: {"interaction": {"id": "int_2", "status": "in_progress"}, "event_type": "interaction.created"}

event: interaction.status_update
data: {"interaction_id": "int_2", "status": "in_progress", "event_type": "interaction.status_update"}

// ── Step 0: Thought ──────────────────────────────────
event: step.start
data: {"index": 0, "step": {"type": "thought"}, "event_type": "step.start"}

event: step.delta
data: {"index": 0, "delta": {"type": "thought_summary", "content": {"type": "text", "text": "Got weather data. Composing the final response."}}, "event_type": "step.delta"}

event: step.stop
data: {"index": 0, "event_type": "step.stop"}

// ── Step 1: Model Output (text streamed) ─────────────
event: step.start
data: {"index": 1, "step": {"type": "model_output"}, "event_type": "step.start"}

event: step.delta
data: {"index": 1, "delta": {"type": "text", "text": "It's currently 52°F and rainy in Boston."}, "event_type": "step.delta"}

event: step.stop
data: {"index": 1, "event_type": "step.stop"}

// ── Interaction complete ─────────────────────────────
event: interaction.completed
data: {"interaction": {"id": "int_2", "status": "completed", "usage": {"total_input_tokens": 256, "total_output_tokens": 128, "total_tokens": 384}}, "event_type": "interaction.completed"}

event: done
data: [DONE]

Como migrar para a API Interactions

Por que migrar?

Entrada/saída básica

Antes (generateContent)

Python

JavaScript

Java

Go

REST

Python

JavaScript

Java

Go

REST

Conversas com vários turnos

Antes (generateContent)

Python

JavaScript

Java

Go

REST

Depois (API Interactions)

Python

JavaScript

Java

Go

REST

Entradas multimodais

Antes (generateContent)

Python

JavaScript

Java

Go

REST

Depois (API Interactions)

Python

JavaScript

Java

Go

REST

Resposta estruturada

Antes (generateContent)

Python

JavaScript

Java

Go

REST

Depois (API Interactions)

Python

JavaScript

Java

Go

REST

Geração multimodal

Antes (generateContent)

Depois (API Interactions)

Ferramentas do lado do servidor

Antes (generateContent)

Python

JavaScript

Java

Go

REST

Depois (API Interactions)

Python

JavaScript

Java

Go

REST

Chamadas de função

Antes (generateContent)

JavaScript

Java

Go

REST

Depois (API Interactions)

Python

JavaScript

Java

Go

Antes (`generateContent`)

Antes (`generateContent`)

Antes (`generateContent`)

Antes (`generateContent`)

Antes (`generateContent`)

Antes (`generateContent`)

Antes (`generateContent`)

Antes (`generateContentStream`)

Antes (`generateContent`)