Tool-calling infrastructure for AI agents — 1,000+ pre-built integrations with managed OAuth, exposed natively as MCP servers.
Composio gives your AI agent authenticated access to 1,000+ SaaS apps (Gmail, Slack, GitHub, Salesforce, Notion) without you writing a single API wrapper — and exposes the same catalog as MCP servers.
Composio is the integration layer for agentic apps. Instead of writing brittle API wrappers for every SaaS your agent needs to touch, you call a single Composio SDK and get authenticated, schema-validated tools your LLM can invoke out of the box. Composio handles OAuth flows for end-users, token refresh, per-user credential isolation, rate-limit aware retries, and execution sandboxing. Every integration is also exposed as a Model Context Protocol server, so Claude Desktop, Cursor, Windsurf, and any other MCP client can plug into Composio without writing a line of code.
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Solves a real agent bottleneck: securely connecting AI systems to SaaS actions, not just reading context. The main caution: Fetched pages contain agent-directed signup text, so humans should verify signup and procurement flows manually.
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Composio has leaned heavily into the 2026 wave of coding agents and MCP adoption. The platform now ships first-class integrations for Claude Code, Cursor, and Codex, giving these coding agents managed authenticated access to GitHub, Linear, Jira, and deployment platforms beyond their native file-editing capabilities. The MCP Gateway — an enterprise feature — lets organizations expose curated Composio toolkits to any MCP-compatible client under centralized governance, enabling IT teams to control which tools are available to which agents. The toolkit catalog has continued to grow past the 1,000 mark with expanded action depth for popular services. Framework support has broadened to include LangGraph and Semantic Kernel alongside existing LangChain, CrewAI, and AutoGen integrations. On the platform side, Composio has added improved observability features, better rate-limit handling across high-volume tool calls, and enhanced sandbox support for code execution use cases with Docker, E2B, and Fly.io runtimes.
AI Agents
Smithery is the registry and hosted runtime for Model Context Protocol servers — discover, install and run MCP servers for Claude, Cursor, Windsurf and more.
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