Interações de streaming
Ao criar uma interação, é possível definir stream: true para transmitir a resposta de forma incremental usando eventos enviados pelo servidor (SSE).
Python
from google import genai
client = genai.Client()
stream = client.interactions.create(
model="gemini-3-flash-preview",
input="Count to from 1 to 25.",
stream=True,
)
for event in stream:
if event.event_type == "step.delta":
if event.delta.type == "text":
print(event.delta.text, end="", flush=True)
JavaScript
import { GoogleGenAI } from "@google/genai";
const client = new GoogleGenAI({});
const stream = await client.interactions.create({
model: "gemini-3-flash-preview",
input: "Count to from 1 to 25.",
stream: true,
});
for await (const event of stream) {
if (event.event_type === "step.delta") {
if (event.delta.type === "text") {
process.stdout.write(event.delta.text);
}
}
}
REST
curl -X POST "https://generativelanguage.googleapis.com/v1beta/interactions" \
-H "x-goog-api-key: $GEMINI_API_KEY" \
-H "Content-Type: application/json" \
-H "Api-Revision: 2026-05-20" \
--no-buffer \
-d '{
"model": "gemini-3-flash-preview",
"input": "Count to from 1 to 25.",
"stream": true
}'
event: interaction.created
data: {"interaction":{"id":"v1_...","status":"in_progress","object":"interaction","model":"gemini-3-flash-preview"},"event_type":"interaction.created"}
event: interaction.status_update
data: {"interaction_id":"v1_...","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":{"signature":"...","type":"thought_signature"},"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":{"text":"1, 2, 3, 4, 5, 6, ","type":"text"},"event_type":"step.delta"}
event: step.delta
data: {"index":1,"delta":{"text":"7, 8, 9, 10, 11, 12, 13,","type":"text"},"event_type":"step.delta"}
...
event: step.stop
data: {"index":1,"event_type":"step.stop"}
event: interaction.completed
data: {"interaction":{"id":"v1_...","status":"completed","usage":{"total_tokens":346,"total_input_tokens":11,"input_tokens_by_modality":[{"modality":"text","tokens":11}],"total_cached_tokens":0,"total_output_tokens":90,"total_tool_use_tokens":0,"total_thought_tokens":245},"created":"2026-05-12T18:44:51Z","updated":"2026-05-12T18:44:51Z","service_tier":"standard","object":"interaction","model":"gemini-3-flash-preview"},"event_type":"interaction.completed"}
event: done
data: [DONE]
Tipos de evento
Cada evento enviado pelo servidor inclui um event_type nomeado e dados JSON associados. A API Interactions usa um modelo de streaming simétrico em que todo o conteúdo (texto, chamadas de função, pensamento) flui por um evento baseado em etapas consistente.
Cada stream segue este fluxo de eventos:
interaction.created: a interação é criada e inclui metadados (ID, modelo, status).- Uma série de etapas, cada uma consistindo em:
- Um evento
step.start, que indica o tipo de etapa (por exemplo,model_output,thought,function_call). - Um ou mais eventos
step.deltacom dados incrementais para essa etapa. - Um evento
step.stopque marca a etapa como concluída.
- Um evento
- Um evento
interaction.completedcom estatísticas finais deusage.
Quando você define stream: false, a API retorna um único objeto interaction com uma matriz steps. Cada elemento em steps é a versão totalmente montada de um ciclo step.start → step.delta(s) → step.stop.
interaction.created
Enviado quando a interação é criada pela primeira vez. Contém o ID da interação, o modelo e o status inicial.
event: interaction.created
data: {"interaction": {"id": "...", "model": "gemini-3-flash-preview", "status": "in_progress", "object": "interaction"}, "event_type": "interaction.created"}
interaction.status_update
Indica uma transição de status no nível da interação. Pode aparecer entre as etapas.
event: interaction.status_update
data: {"interaction_id": "...", "status": "in_progress", "event_type": "interaction.status_update"}
step.start
Marca o início de uma nova etapa. Contém as etapas type e index. O tipo de etapa determina quais tipos de delta esperar e como a etapa aparece em uma resposta sem streaming:
| Tipo de etapa | Tipos de delta esperados | Descrição |
|---|---|---|
model_output |
text, image, audio |
O conteúdo da resposta final do modelo. |
thought |
thought_signature, thought_summary |
Raciocínio da linha de raciocínio. summary só está presente quando thinking_summaries está ativado. |
function_call |
arguments_delta |
Uma solicitação para o cliente executar uma função. Define o status da interação como requires_action. |
| Ferramentas do lado do servidor | Varia de acordo com a ferramenta | Ferramentas executadas pela API (por exemplo, google_search_call, google_search_result, code_execution_call, code_execution_result). |
Consulte a referência da API Interactions para ver a lista completa.
event: step.start
data: {"index": 0, "step": {"type": "model_output"}, "event_type": "step.start"}
Para chamadas de função, a etapa inclui o nome da função, o ID e os argumentos vazios {}.
event: step.start
data: {"index": 0, "step": {"type": "function_call", "id":"un6k8t18", "name": "get_weather", "arguments":{}}, "event_type": "step.start"}
step.delta
Dados incrementais para a etapa atual. O objeto delta contém um campo type que determina a forma dele.
Exemplos:
text:token de texto incremental de uma etapa model_output:
event: step.delta
data: {"index": 0, "delta": {"type": "text", "text": "Hello, my name is Phil"}, "event_type": "step.delta"}
event: step.delta
data: {"index": 0, "delta": {"type": "text", "text": ", and I live in Germany." }, "event_type": "step.delta"}
image:dados de imagem codificados em base64 de uma etapa model_output:
event: step.delta
data: {"index": 0, "delta": {"type": "image", "mime_type": "image/jpeg", "data": "/9j/4AAQSkZJRgABAQAAAQABAAD/2wBDAAoHBwgHBgoICAgLCg..."}, "event_type": "step.delta"}
thought_summary:conteúdo de resumo de pensamento de uma etapa thought:
event: step.delta
data: {"index": 0, "delta": {"type": "thought_summary", "content": {"type": "text", "text": "I need to find the GCD..."}}, "event_type": "step.delta"}
arguments_delta: (parcial) string JSON para argumentos de chamada de função. Precisa ser acumulado em deltas:
event: step.delta
data: {"index": 0, "delta": {"type": "arguments_delta", "arguments": "{\"location\": \"San Francisco, CA\"}"}, "event_type": "step.delta"}
Estes são alguns dos tipos de delta mais comuns. Para conferir a lista completa de todos os tipos de delta, consulte a referência da API Interactions.
step.stop
Marca o fim de uma etapa. Contém a etapa index.
event: step.stop
data: {"index": 0, "event_type": "step.stop"}
interaction.completed
Enviado quando a interação é concluída. Contém o objeto de interação final com estatísticas de usage. No modo sem streaming, esse é o próprio objeto de resposta de nível superior. Não inclui steps na resposta.
event: interaction.completed
data: {"interaction": {"id": "v1_abc123", "status": "completed", "usage": {"total_input_tokens": 7, "total_output_tokens": 12, "total_tokens": 19}}, "event_type": "interaction.completed"}
error
Enviado quando ocorre um erro durante a interação. Contém um objeto de erro com uma mensagem e um código.
event: error
data: {"error":{"message":"Deadline expired before operation could complete.","code":"gateway_timeout"},"event_type":"error"}
Streaming com ferramentas
A API Interactions oferece suporte a streaming com ferramentas do lado do cliente (chamada de função) e do lado do servidor (Pesquisa Google, execução de código etc.) em uma única solicitação. Durante o streaming, as invocações de ferramentas aparecem como etapas digitadas no fluxo de eventos. Para chamadas de função, o evento step.start entrega o nome da função, e os eventos step.delta transmitem os argumentos como strings JSON (arguments_delta). É necessário acumular esses deltas para receber os argumentos completos.
Ferramentas do lado do servidor, como a Pesquisa Google, são executadas automaticamente pela API,
produzindo etapas google_search_call e google_search_result.
Streaming com chamadas de função
Para fazer chamadas de função com streaming, o cliente precisa lidar com uma conversa de vários turnos:
- Turno 1 (solicitação de função): chame
interactions.createcomstream: truee seutoolsdefinido. A API vai transmitir uma etapafunction_call. Você precisa acumular as strings JSON de argumento incremental (arguments_delta) de eventosstep.deltaaté que a interação seja concluída com o statusrequires_action. - Turno 2 (envio do resultado): chame
interactions.createnovamente, transmitindo oprevious_interaction_id(correspondente ao ID da primeira interação) e enviando um blocofunction_resultna matrizinput. Isso retoma o fluxo, permitindo que o modelo gere a resposta final.
Python
from google import genai
client = genai.Client()
weather_tool = {
"type": "function",
"name": "get_weather",
"description": "Get the current weather in a given location",
"parameters": {
"type": "object",
"properties": {
"location": {
"type": "string",
"description": "The city and state, e.g. San Francisco, CA"
}
},
"required": ["location"]
}
}
# Turn 1: Request function call
stream = client.interactions.create(
model="gemini-3-flash-preview",
tools=[weather_tool],
input="What is the weather in Paris right now?",
stream=True,
)
first_interaction_id = None
func_call_id = None
func_call_name = None
func_args_accumulated = ""
for event in stream:
if event.event_type == "interaction.created":
first_interaction_id = event.interaction.id
elif event.event_type == "step.start":
step = event.step
if step.type == "function_call":
func_call_id = step.id
func_call_name = step.name
elif event.event_type == "step.delta":
if event.delta.type == "arguments_delta":
func_args_accumulated += event.delta.arguments
# Turn 2: Execute tool and send the result back to resume stream
if func_call_id:
# Execute weather_tool using accumulated arguments
# args = json.loads(func_args_accumulated)
dummy_result = {
"content": [{"type": "text", "text": '{"weather": "Sunny and 22°C"}'}]
}
stream2 = client.interactions.create(
model="gemini-3-flash-preview",
previous_interaction_id=first_interaction_id,
input=[{
"type": "function_result",
"name": func_call_name,
"call_id": func_call_id,
"result": dummy_result
}],
stream=True,
)
for event in stream2:
if event.event_type == "step.delta":
if event.delta.type == "text":
print(event.delta.text, end="", flush=True)
JavaScript
import { GoogleGenAI } from "@google/genai";
const client = new GoogleGenAI({});
const weatherTool = {
type: "function",
name: "get_weather",
description: "Get the current weather in a given location",
parameters: {
type: "object",
properties: {
location: {
type: "string",
description: "The city and state, e.g. San Francisco, CA"
}
},
required: ["location"]
}
};
// Turn 1: Request function call
const stream = await client.interactions.create({
model: "gemini-3-flash-preview",
tools: [weatherTool],
input: "What is the weather in Paris right now?",
stream: true,
});
let firstInteractionId = null;
let funcCallId = null;
let funcCallName = null;
let funcArgsAccumulated = "";
for await (const event of stream) {
if (event.event_type === "interaction.created") {
firstInteractionId = event.interaction.id;
} else if (event.event_type === "step.start") {
const step = event.step;
if (step.type === "function_call") {
funcCallId = step.id;
funcCallName = step.name;
}
} else if (event.event_type === "step.delta") {
if (event.delta.type === "arguments_delta") {
funcArgsAccumulated += event.delta.arguments;
}
}
}
// Turn 2: Execute tool and send the result back to resume stream
if (funcCallId && firstInteractionId && funcCallName) {
// const args = JSON.parse(funcArgsAccumulated);
const dummyResult = {
content: [{ type: "text", text: '{"weather": "Sunny and 22°C"}' }]
};
const stream2 = await client.interactions.create({
model: "gemini-3-flash-preview",
previous_interaction_id: firstInteractionId,
input: [{
type: "function_result",
name: funcCallName,
call_id: funcCallId,
result: dummyResult
}],
stream: true,
});
for await (const event of stream2) {
if (event.event_type === "step.delta") {
if (event.delta.type === "text") {
process.stdout.write(event.delta.text);
}
}
}
}
REST
Turno 1:solicitar uma chamada de função
curl -X POST "https://generativelanguage.googleapis.com/v1beta/interactions" \
-H "x-goog-api-key: $GEMINI_API_KEY" \
-H "Content-Type: application/json" \
-H "Api-Revision: 2026-05-20" \
--no-buffer \
-d '{
"model": "gemini-3-flash-preview",
"input": "What is the weather in Paris right now?",
"stream": true,
"tools": [
{
"type": "function",
"name": "get_weather",
"description": "Get the current weather in a given location",
"parameters": {
"type": "object",
"properties": {
"location": {
"type": "string",
"description": "The city and state, e.g. San Francisco, CA"
}
},
"required": ["location"]
}
}
]
}'
Turno 2:envie o resultado da função usando previous_interaction_id e call_id do turno 1
curl -X POST "https://generativelanguage.googleapis.com/v1beta/interactions" \
-H "x-goog-api-key: $GEMINI_API_KEY" \
-H "Content-Type: application/json" \
-H "Api-Revision: 2026-05-20" \
--no-buffer \
-d '{
"model": "gemini-3-flash-preview",
"previous_interaction_id": "v1_ChdGUVFJYXBXVUdLVEF4TjhQ...",
"stream": true,
"input": [
{
"type": "function_result",
"name": "get_weather",
"call_id": "CALL_ID",
"result": {
"content": [
{
"type": "text",
"text": "{\"weather\": \"Sunny and 22°C\"}"
}
]
}
}
]
}'
Streaming com várias ferramentas
O exemplo a seguir usa uma ferramenta function e google_search em uma solicitação:
Python
from google import genai
client = genai.Client()
tools = [
{"type": "google_search"},
{
"type": "function",
"name": "get_weather",
"description": "Get the current weather in a given location",
"parameters": {
"type": "object",
"properties": {
"location": {
"type": "string",
"description": "The city and state, e.g. San Francisco, CA"
}
},
"required": ["location"]
}
}
]
stream = client.interactions.create(
model="gemini-3-flash-preview",
tools=tools,
input="Search what it the largest mountain in Europe and what the weather is there right now?",
stream=True,
)
for event in stream:
if event.event_type == "step.start":
step = event.step
print(f"\n--- Step {event.index}: {step.type} ---")
# Show details for tool steps
if step.type == "google_search_call":
print(f" Search ID: {step.id}")
elif step.type == "google_search_result":
print(f" Result for: {step.call_id}")
elif step.type == "function_call":
print(f" Function: {step.name}({step.arguments})")
elif event.event_type == "step.delta":
if event.delta.type == "text":
print(event.delta.text, end="", flush=True)
elif event.delta.type == "google_search_call":
print(f" Queries: {event.delta.arguments}")
elif event.delta.type == "arguments_delta":
print(f" Args chunk: {event.delta.arguments}", end="", flush=True)
elif event.event_type == "interaction.completed":
print(f"\n\nStatus: {event.interaction.status}")
if event.interaction.status == "requires_action":
print("Action required: provide function call results to continue.")
JavaScript
import { GoogleGenAI } from "@google/genai";
const client = new GoogleGenAI({});
const tools = [
{ type: "google_search" },
{
type: "function",
name: "get_weather",
description: "Get the current weather in a given location",
parameters: {
type: "object",
properties: {
location: {
type: "string",
description: "The city and state, e.g. San Francisco, CA"
}
},
required: ["location"]
}
}
];
const stream = await client.interactions.create({
model: "gemini-3-flash-preview",
tools: tools,
input: "Search what it the largest mountain in Europe and what the weather is there right now?",
stream: true,
});
for await (const event of stream) {
if (event.event_type === "step.start") {
const step = event.step;
console.log(`\n--- Step ${event.index}: ${step.type} ---`);
// Show details for tool steps
if (step.type === "google_search_call") {
console.log(` Search ID: ${step.id}`);
} else if (step.type === "google_search_result") {
console.log(` Result for: ${step.call_id}`);
} else if (step.type === "function_call") {
console.log(` Function: ${step.name}(${JSON.stringify(step.arguments)})`);
}
} else if (event.event_type === "step.delta") {
if (event.delta.type === "text") {
process.stdout.write(event.delta.text);
} else if (event.delta.type === "google_search_call") {
console.log(` Queries: ${JSON.stringify(event.delta.arguments?.queries)}`);
} else if (event.step.type === "google_search_result") {
console.log(` Result for: ${event.step.call_id}`);
} else if (event.delta.type === "arguments_delta") {
process.stdout.write(` Args chunk: ${event.delta.arguments}`);
}
} else if (event.event_type === "interaction.completed") {
console.log(`\n\nStatus: ${event.interaction.status}`);
if (event.interaction.status === "requires_action") {
console.log("Action required: provide function call results to continue.");
}
}
}
REST
curl -X POST "https://generativelanguage.googleapis.com/v1beta/interactions" \
-H "x-goog-api-key: $GEMINI_API_KEY" \
-H "Content-Type: application/json" \
-H "Api-Revision: 2026-05-20" \
--no-buffer \
-d '{
"model": "gemini-3-flash-preview",
"input": "Search what it the largest mountain in Europe and what the weather is there right now?",
"stream": true,
"tools": [
{ "type": "google_search" },
{
"type": "function",
"name": "get_weather",
"description": "Get the current weather in a given location",
"parameters": {
"type": "object",
"properties": {
"location": {
"type": "string",
"description": "The city and state, e.g. San Francisco, CA"
}
},
"required": ["location"]
}
}
]
}'
event: interaction.created
data: {"interaction":{"id":"v1_...","status":"in_progress","object":"interaction","model":"gemini-3-flash-preview"},"event_type":"interaction.created"}
event: interaction.status_update
data: {"interaction_id":"v1_...","status":"in_progress","event_type":"interaction.status_update"}
event: step.start
data: {"index":0,"step":{"id":"mkutnkgn","signature":"","type":"google_search_call"},"event_type":"step.start"}
event: step.delta
data: {"index":0,"delta":{"signature":"...","type":"google_search_call","arguments":{"queries":["largest mountain in Europe"]}},"event_type":"step.delta"}
event: step.stop
data: {"index":0,"event_type":"step.stop"}
event: step.start
data: {"index":1,"step":{"call_id":"mkutnkgn","signature":"","type":"google_search_result"},"event_type":"step.start"}
event: step.delta
data: {"index":1,"delta":{"signature":"...","type":"google_search_result","is_error":false},"event_type":"step.delta"}
event: step.stop
data: {"index":1,"event_type":"step.stop"}
event: step.start
data: {"index":2,"step":{"type":"thought"},"event_type":"step.start"}
event: step.delta
data: {"index":2,"delta":{"signature":"...","type":"thought_signature"},"event_type":"step.delta"}
event: step.stop
data: {"index":2,"event_type":"step.stop"}
event: step.start
data: {"index":3,"step":{"id":"ktr5aysg","type":"function_call","name":"get_weather","arguments":{}},"event_type":"step.start"}
event: step.delta
data: {"index":3,"delta":{"arguments":"{\"location\":\"Mount Elbrus, Russia\"}","type":"arguments_delta"},"event_type":"step.delta"}
event: step.stop
data: {"index":3,"event_type":"step.stop"}
event: interaction.completed
data: {"interaction":{"id":"v1_...","status":"requires_action","usage":{"total_tokens":299,"total_input_tokens":138,"input_tokens_by_modality":[{"modality":"text","tokens":138}],"total_cached_tokens":0,"total_output_tokens":20,"total_tool_use_tokens":0,"total_thought_tokens":141},"created":"2026-05-12T17:24:26Z","updated":"2026-05-12T17:24:26Z","service_tier":"standard","object":"interaction","model":"gemini-3-flash-preview"},"event_type":"interaction.completed"}
event: done
data: [DONE]
Streaming com raciocínio
Quando o modelo usa o pensamento, você recebe thought etapas com dois tipos de delta distintos: thought_summary (conteúdo incremental de texto ou resumo de imagem) e thought_signature (uma representação criptografada do raciocínio interno do modelo, enviada como o último delta antes de step.stop). Se thinking_summaries estiver ativado, os deltas thought_summary vão transmitir um resumo do raciocínio do modelo. Para mais detalhes sobre o pensamento, consulte o guia de pensamento.
Python
from google import genai
client = genai.Client()
stream = client.interactions.create(
model="gemini-3-flash-preview",
input="What is the greatest common divisor of 1071 and 462?",
generation_config={
"thinking_summaries": "auto"
},
stream=True,
)
for event in stream:
if event.event_type == "step.start":
print(f"\n--- Step: {event.step.type} ---")
elif event.event_type == "step.delta":
if event.delta.type == "thought_summary":
if event.delta.content.type == "text":
print(event.delta.content.text, end="", flush=True)
elif event.delta.type == "text":
print(event.delta.text, end="", flush=True)
JavaScript
import { GoogleGenAI } from "@google/genai";
const client = new GoogleGenAI({});
const stream = await client.interactions.create({
model: "gemini-3-flash-preview",
input: "What is the greatest common divisor of 1071 and 462?",
generation_config: {
thinking_summaries: "auto",
},
stream: true,
});
for await (const event of stream) {
if (event.event_type === "step.start") {
console.log(`\n--- Step: ${event.step.type} ---`);
} else if (event.event_type === "step.delta") {
if (event.delta.type === "thought_summary") {
if (event.delta.content.type === "text") {
process.stdout.write(event.delta.content.text);
}
} else if (event.delta.type === "text") {
process.stdout.write(event.delta.text);
}
}
}
REST
curl -X POST "https://generativelanguage.googleapis.com/v1beta/interactions" \
-H "x-goog-api-key: $GEMINI_API_KEY" \
-H "Content-Type: application/json" \
-H "Api-Revision: 2026-05-20" \
--no-buffer \
-d '{
"model": "gemini-3-flash-preview",
"input": "What is the greatest common divisor of 1071 and 462?",
"stream": true,
"generation_config": {
"thinking_summaries": "auto"
}
}'
event: interaction.created
data: {"interaction":{"id":"v1_...","status":"in_progress","object":"interaction","model":"gemini-3-flash-preview"},"event_type":"interaction.created"}
event: interaction.status_update
data: {"interaction_id":"v1_...","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":{"content":{"text":"**Implementing Euclidean Algorithm**\n\nI've just worked through a detailed example applying the Euclidean algorithm to find the GCD of 1071 and 462, confirming its step-by-step nature. The calculations went smoothly, tracking the remainders until zero. My focus is now solidifying the implementation logic, ensuring accuracy and considering potential edge cases. I'll translate this example into code.\n\n\n","type":"text"},"type":"thought_summary"},"event_type":"step.delta"}
event: step.delta
data: {"index":0,"delta":{"signature":"...","type":"thought_signature"},"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"}
...
Transmissão com agentes
A API Interactions é compatível com agentes como o Deep Research. Os agentes usam o background=True e retornam resultados de forma assíncrona, mas você também pode transmitir as interações do agente para receber atualizações de progresso e etapas intermediárias à medida que elas acontecem. Para mais detalhes, consulte o guia do Deep Research.
Python
from google import genai
client = genai.Client()
stream = client.interactions.create(
agent="deep-research-preview-04-2026",
input="Research the latest advances in quantum computing.",
stream=True,
background=True,
agent_config={
"type": "deep-research",
"thinking_summaries": "auto"
}
)
for event in stream:
if event.event_type == "step.start":
print(f"\n--- Step: {event.step.type} ---")
elif event.event_type == "step.delta":
if event.delta.type == "text":
print(event.delta.text, end="", flush=True)
elif event.delta.type == "thought_summary":
if event.delta.content.type == "text":
print(event.delta.content.text, end="", flush=True)
elif event.event_type == "interaction.completed":
print(f"\n\nTotal Tokens: {event.interaction.usage.total_tokens}")
JavaScript
import { GoogleGenAI } from "@google/genai";
const client = new GoogleGenAI({});
const stream = await client.interactions.create({
agent: "deep-research-preview-04-2026",
input: "Research the latest advances in quantum computing.",
stream: true,
background: true,
agent_config: {
type: "deep-research",
thinking_summaries: "auto"
}
});
for await (const event of stream) {
if (event.event_type === "step.start") {
console.log(`\n--- Step: ${event.step.type} ---`);
} else if (event.event_type === "step.delta") {
if (event.delta.type === "text") {
process.stdout.write(event.delta.text);
} else if (event.delta.type === "thought_summary") {
if (event.delta.content.type === "text") {
process.stdout.write(event.delta.content.text);
}
}
} else if (event.event_type === "interaction.completed") {
console.log(`\n\nTotal Tokens: ${event.interaction.usage.total_tokens}`);
}
}
REST
curl -X POST "https://generativelanguage.googleapis.com/v1beta/interactions" \
-H "x-goog-api-key: $GEMINI_API_KEY" \
-H "Content-Type: application/json" \
-H "Api-Revision: 2026-05-20" \
--no-buffer \
-d '{
"agent": "deep-research-preview-04-2026",
"input": "Research the latest advances in quantum computing.",
"stream": true,
"background": true,
"agent_config": {
"type": "deep-research",
"thinking_summaries": "auto"
}
}'
event: interaction.created
data: {"interaction":{"id":"v1_...","status":"in_progress","object":"interaction","agent":"deep-research-preview-04-2026"},"event_type":"interaction.created"}
event: interaction.status_update
data: {"interaction_id":"v1_...","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":{"content":{"text":"***Generating research plan***\n\nTo best answer your request, I'm starting by constructing a comprehensive research plan. This will outline the key areas I need to investigate and the strategy I'll use to connect them."},"type":"thought_summary"},"event_type":"step.delta"}
... (additional thought steps) ...
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":{"text":"# The Quantum Inflection Point: Exhaustive Analysis of Hardware, Algorithms, and Market Dynamics in 2026\n\n## Executive Summary\n\n..."},"event_type":"step.delta"}
event: step.stop
data: {"index":1,"event_type":"step.stop"}
event: interaction.completed
data: {"interaction":{"id":"v1_...","status":"completed","usage":{"total_tokens":1117031,"total_input_tokens":428865,"total_output_tokens":22294,"total_thought_tokens":26213},"created":"2026-05-12T17:24:27Z","updated":"2026-05-12T17:24:27Z","object":"interaction","agent":"deep-research-preview-04-2026"},"event_type":"interaction.completed"}
event: done
data: [DONE]
Geração de imagens por streaming
A API Interactions é compatível com o streaming de várias modalidades de saída simultaneamente. Ao solicitar text e image no response_format, você pode receber texto intercalado e imagens geradas no mesmo fluxo.
O exemplo a seguir usa o gemini-3.1-flash-image-preview (Nano Banana 2) para pesquisar informações e gerar uma história com ilustrações intercaladas.
Python
from google import genai
client = genai.Client()
stream = client.interactions.create(
model="gemini-3.1-flash-image-preview",
tools=[{"type": "google_search", "search_types": ["web_search", "image_search"]}],
input="Search for the history of the Colosseum and write a short illustrated story about a gladiator named Marcus. Interleave text and generated images.",
response_format=[
{"type": "text"},
{"type": "image"}
],
stream=True,
)
for event in stream:
if event.event_type == "step.delta":
if event.delta.type == "text":
print(event.delta.text, end="", flush=True)
elif event.delta.type == "image":
print(f"\n[Image chunk: {len(event.delta.data)} bytes]", end="", flush=True)
JavaScript
import { GoogleGenAI } from "@google/genai";
const client = new GoogleGenAI({});
const stream = await client.interactions.create({
model: "gemini-3.1-flash-image-preview",
tools: [{ type: "google_search", search_types: ["web_search", "image_search"] }],
input: "Search for the history of the Colosseum and write a short illustrated story about a gladiator named Marcus. Interleave text and generated images.",
response_format: [
{ type: "text" },
{ type: "image" }
],
stream: true,
});
for await (const event of stream) {
if (event.event_type === "step.delta") {
if (event.delta.type === "text") {
process.stdout.write(event.delta.text);
} else if (event.delta.type === "image") {
console.log(`\n[Image chunk: ${event.delta.data.length} bytes]`);
}
}
}
REST
curl -X POST "https://generativelanguage.googleapis.com/v1beta/interactions" \
-H "x-goog-api-key: $GEMINI_API_KEY" \
-H "Content-Type: application/json" \
-H "Api-Revision: 2026-05-20" \
--no-buffer \
-d '{
"model": "gemini-3.1-flash-image-preview",
"input": "Search for the history of the Colosseum and write a short illustrated story about a gladiator named Marcus. Interleave text and generated images.",
"stream": true,
"tools": [
{ "type": "google_search",
"search_types": ["web_search", "image_search"]
}
],
"generation_config": {
"thinking_summaries": "auto"
},
"response_format": [
{ "type": "text" }, { "type": "image"}
]
}'
event: interaction.created
data: {"interaction":{"id":"v1_...","status":"in_progress","object":"interaction","model":"gemini-3.1-flash-image-preview"},"event_type":"interaction.created"}
event: interaction.status_update
data: {"interaction_id":"v1_...","status":"in_progress","event_type":"interaction.status_update"}
event: step.start
data: {"index":0,"step":{"type":"model_output"},"event_type":"step.start"}
event: step.delta
data: {"index":0,"delta":{"text":"Here is a short illustrated story about the Colosseum...\n\n### Part 1: The New Flavian Amphitheater\n\n...","type":"text"},"event_type":"step.delta"}
...
event: step.stop
data: {"index":0,"event_type":"step.stop"}
event: step.start
data: {"index":1,"step":{"type":"thought"},"event_type":"step.start"}
event: step.delta
data: {"index":1,"delta":{"signature":"...","type":"thought_signature"},"event_type":"step.delta"}
event: step.stop
data: {"index":1,"event_type":"step.stop"}
event: step.start
data: {"index":2,"step":{"type":"model_output"},"event_type":"step.start"}
event: step.delta
data: {"index":2,"delta":{"mime_type":"image/jpeg","data":"/9j/4AAQSkZJRgABAQAAAQABAAD/2wBDAAoHBwgHBgoICAgLCg...","type":"image"},"event_type":"step.delta"}
event: step.delta
data: {"index":2,"delta":{"text":"### Part 2: The Hypogeum and the Wait\n\n...","type":"text"},"event_type":"step.delta"}
...
event: step.stop
data: {"index":2,"event_type":"step.stop"}
event: step.start
data: {"index":3,"step":{"type":"thought"},"event_type":"step.start"}
event: step.delta
data: {"index":3,"delta":{"signature":"...","type":"thought_signature"},"event_type":"step.delta"}
event: step.stop
data: {"index":3,"event_type":"step.stop"}
event: step.start
data: {"index":4,"step":{"type":"model_output"},"event_type":"step.start"}
event: step.delta
data: {"index":4,"delta":{"mime_type":"image/jpeg","data":"/9j/4AAQSkZJRgABAQAAAQABAAD/...","type":"image"},"event_type":"step.delta"}
event: step.delta
data: {"index":4,"delta":{"text":"### Part 3: The Moment of Spectacle\n\n...","type":"text"},"event_type":"step.delta"}
...
event: step.stop
data: {"index":4,"event_type":"step.stop"}
event: interaction.completed
data: {"interaction":{"id":"v1_...","status":"completed","usage":{"total_tokens":6128,"total_input_tokens":29,"total_output_tokens":6099,"output_tokens_by_modality":[{"modality":"image","tokens":4480}]}},"event_type":"interaction.completed"}
event: done
data: [DONE]
Como lidar com eventos desconhecidos
De acordo com a política de controle de versões da API, novos tipos de eventos e deltas podem ser adicionados ao longo do tempo. Seu código precisa processar tipos de eventos desconhecidos de maneira adequada. Registre e pule os eventos que você não reconhece em vez de gerar um erro.
A seguir
- Saiba mais sobre a API Interactions.
- Confira a Chamada de função com ferramentas.
- Saiba mais sobre o Pensamento para um raciocínio aprimorado.
- Teste o agente Deep Research para tarefas de longa duração.
- Consulte a referência da API Interactions para todos os tipos de eventos e deltas.