rrijssenbeek Composio Skill
You are an expert at integrating AI agents with third-party applications using Composio — the developer-first platform that connects agents to 1000+ apps via unified SDKs and MCP.
Read the detailed reference files in ${CLAUDE_SKILL_DIR} for comprehensive patterns:
sdk-reference.md— Python and TypeScript SDK patterns, sessions, tools, MCP integration, executing actionsauth-and-triggers.md— OAuth/API key authentication flows, connected accounts, triggers, webhooks, polling
Setup Checklist
Python
pip install composio composio-claude-agent-sdk
TypeScript
npm install composio @composio/claude-agent-sdk
Environment Variables
COMPOSIO_API_KEY=your_composio_api_key # from composio.dev dashboard
ANTHROPIC_API_KEY=your_anthropic_api_key # for Claude integration
Key Concepts
| Concept | Description |
|---|---|
| Toolkits | Bundles of tools by service (github, gmail, slack, notion, etc.) |
| Tools | Discrete operations: GITHUB_CREATE_ISSUE, GMAIL_SEND_EMAIL, SLACK_POST_MESSAGE |
| Auth Configs | Reusable auth blueprints (OAuth2, API Key, Bearer Token) per toolkit |
| Connected Accounts | User-to-toolkit links created after OAuth consent or API key setup |
| Triggers | Event listeners: GITHUB_COMMIT_EVENT, SLACK_NEW_MESSAGE, GMAIL_NEW_EMAIL |
| Sessions | Isolated user contexts with access to tools (native or MCP) |
| User ID | Primary identifier scoping all operations to a specific user |
Core Patterns
Initialize Client
Python:
from composio import Composio
composio = Composio(api_key="your_api_key")
# Or set COMPOSIO_API_KEY env var and omit api_key
TypeScript:
import { Composio } from "composio";
const composio = new Composio({ apiKey: "your_api_key" });
Create Session and Get Tools (Native)
session = composio.create(user_id="user_123", toolkits=["github", "gmail"])
tools = session.tools()
# Pass tools to your Claude agent
Create Session and Get MCP URL
session = composio.create(user_id="user_123", toolkits=["github", "slack"])
mcp_url = session.mcp.url
# Use mcp_url in MCP-compatible clients (Claude Desktop, Cursor, etc.)
Authenticate a User (OAuth2)
connection_request = composio.connected_accounts.initiate(
user_id="user_123",
auth_config_id="your_auth_config_id",
config={"auth_scheme": "OAUTH2"},
callback_url="https://yourapp.com/callback"
)
# Redirect user to: connection_request.redirect_url
# After consent, wait for connection:
connected_account = connection_request.wait_for_connection()
Set Up a Trigger
trigger = composio.triggers.create(
slug="GITHUB_COMMIT_EVENT",
user_id="user_123",
trigger_config={"owner": "repo-owner", "repo": "repo-name"},
)
Critical Rules
- Always scope operations by user_id — every session, connected account, and trigger belongs to a user
- Only ACTIVE connected accounts can execute tools — check status before using
- Use MCP mode for dynamic tool discovery — reduces token usage vs passing all tool definitions upfront
- Auth configs are reusable — create one per toolkit per environment, reuse across users
- Composio auto-refreshes OAuth tokens — no manual token refresh needed
- Webhook triggers are real-time — polling triggers check every ~1 minute
- Never hardcode API keys — use environment variables (
COMPOSIO_API_KEY) - Use type-safe tool names — e.g.,
GITHUB_CREATE_ISSUEnot arbitrary strings - Check connected account status before executing tools: ACTIVE, INITIATED, EXPIRED, FAILED, INACTIVE
- Max toolkits per session vary by plan — check Composio dashboard for limits
Common Workflows
Email Triage Agent
session = composio.create(user_id="user_1", toolkits=["gmail", "slack", "notion"])
tools = session.tools()
# Agent reads Gmail, classifies emails, routes to Slack channels, logs in Notion
GitHub PR Monitor
trigger = composio.triggers.create(
slug="GITHUB_PULL_REQUEST_EVENT",
user_id="user_1",
trigger_config={"owner": "myorg", "repo": "myrepo"},
)
# On PR event -> agent reviews code, posts summary to Slack
Multi-App Workflow
session = composio.create(
user_id="user_1",
toolkits=["github", "slack", "linear", "notion"]
)
tools = session.tools()
# Agent receives Slack message -> creates Linear issue -> updates Notion -> confirms in Slack
Use $ARGUMENTS to understand what the user wants to integrate. Read the reference files for detailed SDK patterns and authentication flows before writing code.