Composio

Composio is a developer platform and runtime for giving AI agents real-world capabilities. It connects agents to 1,000+ external apps through managed authentication and just-in-time tool resolution, so an agent only sees the right tools at the right time instead of a static, bloated toolbox.

The platform handles the full tool-calling stack: OAuth, API keys, token refresh, connection lifecycle, and per-user authorization. Tools are resolved by intent with built-in guardrails, and accuracy improves through account-level optimization based on real-world usage. Each session is context-aware, carrying sandbox state, files, and progress so agents do not start from scratch.

Composio provides ephemeral, remote sandboxes where tools run as code, with large responses stored on a navigable filesystem. It supports parallel execution and triggers for bidirectional communication with connected apps. The SDK and platform are model- and framework-agnostic, working with Claude, GPT, Gemini, Cursor, and other agent frameworks without lock-in.

Enterprise features include fine-grained data access controls, SOC 2 and ISO 27001:2022 compliance, and bring-your-own-cloud deployment. A CLI and managed MCP gateway extend the platform for terminal workflows and tool routing.