composio-gemini

Adapts Composio tools to the google-genai SDK as Python callables compatible with Gemini's Automatic Function Calling.

Installation

pip install composio composio-gemini google-genai

Set COMPOSIO_API_KEY (create one at https://dashboard.composio.dev/settings) and GOOGLE_API_KEY (from https://aistudio.google.com/apikey) in your environment.

Quickstart

GeminiProvider wraps each Composio tool as a typed Python callable. Pass the callables to GenerateContentConfig(tools=...) and the google-genai SDK derives function declarations from their signatures and executes tool calls automatically inside the chat loop; there is no manual tool-call handling.

from composio import Composio
from composio_gemini import GeminiProvider
from google import genai
from google.genai import types

composio = Composio(provider=GeminiProvider())
client = genai.Client()

# Create a session for your user
session = composio.create(user_id="user_123")
tools = session.tools()

config = types.GenerateContentConfig(tools=tools)
chat = client.chats.create(model="gemini-3-pro-preview", config=config)

response = chat.send_message(
    "Send an email to john@example.com with the subject 'Hello' and body 'Hello from Composio!'"
)
print(response.text)

If you disable Automatic Function Calling and handle function calls yourself, composio.provider.handle_response(response, session=session) executes the function calls in a Gemini response the way that session's tools would, and returns Part objects ready to send back. For tools fetched with composio.tools.get(user_id=...), pass user_id= instead:

function_responses, executed = composio.provider.handle_response(
    response, user_id="user_123"
)

A Gemini response does not record which user it belongs to, so pass the user or session whenever one Composio instance serves more than one. Without one, handle_response raises a ValueError once the provider has wrapped tools for more than one user or session.

composio-gemini vs composio-google

This package targets the google-genai SDK (from google import genai). composio-google targets the older Vertex AI SDK (vertexai.generative_models). For new projects, Google recommends google-genai, so use this package.

Links

• Google provider docs: https://docs.composio.dev/docs/providers/google
• Composio docs: https://docs.composio.dev