Composio
An SDK and CLI that gives AI agents access to more than 1,000 pre-authenticated toolkits across external apps, with per-user sessions, authentication, triggers and a sandbox for turning an agent's intent into action.
A Composio session hands an agent's chosen framework a set of tools for a specific user, discovering, authenticating and executing the underlying app tools at runtime through meta-tools rather than loading hundreds of tool definitions into context up front; a session can be reused across turns and exposed over a hosted MCP endpoint for any MCP client. The composio CLI runs the same capabilities from a shell, letting a user or a coding agent search for tools, execute them directly, connect accounts, and script workflows.
Provider adapters translate Composio's tools into the native tool format of frameworks including OpenAI, OpenAI Agents, Anthropic, the Claude Agent SDK, the Vercel AI SDK, Google GenAI, LangChain, LangGraph, LlamaIndex, CrewAI and AutoGen, and it is available as separate TypeScript and Python SDKs.
It is written in TypeScript and licensed under the MIT license.