Composio
Tool-use platform that gives agents access to 250+ apps
- Best for
- Agents that need to act across many SaaS apps
- Pricing
- Free tier; paid plans scale with active users and actions
- Stack layer
- AI Stack
Live preview of composio.dev
Overview
Building tools for agents is mostly authentication. Composio solves that — OAuth flows, scoped tokens, refresh, multi-tenant credential storage — and exposes 250+ apps (Gmail, Slack, Notion, Linear, HubSpot, GitHub) as agent-ready actions.
This is the layer that turns "the agent can write text" into "the agent can actually send the email, file the ticket, update the CRM" without you writing twenty auth flows.
We pair Composio with whatever agent framework the client is on — Claude Agent SDK, LangGraph, CrewAI. It's framework-agnostic.
Key Features
250+ Integrations
Gmail, Slack, Notion, Linear, HubSpot, GitHub, and more
Managed OAuth
Auth flows, token storage, and refresh handled for you
Framework Agnostic
Works with Claude SDK, OpenAI Agents, LangGraph, CrewAI
Scoped Permissions
Per-user, per-action permission boundaries
Triggers
Webhook triggers that fire agents on app events
Self-Hostable
Run the Composio server in your own infrastructure
Why We Recommend Composio
Skipping the auth tax is worth real money. Composio is the fastest path from agent to genuine action across your stack.