Composio MCP Server — 500+ App Integrations Through a Single Endpoint

At a glance: 27,500 stars, 4,500 forks, MIT license, TypeScript/Python SDKs, 1,000+ toolkits across 500+ apps, $29M funded (Series A). Composio is an agentic integration platform connecting AI agents to Gmail, Slack, GitHub, Notion, Salesforce, and hundreds more through one MCP endpoint. Rating: 3.5/5. What It Does Composio provides two MCP access patterns: Single-Toolkit MCP Servers Create dedicated servers per app, exposing only the tools you need. A Gmail server might only allow GMAIL_FETCH_EMAILS and GMAIL_SEND_EMAIL. Rube — Universal MCP Server Rube connects to all 500+ apps through one endpoint using dynamic tool discovery: RUBE_SEARCH_TOOLS — inspects task descriptions, returns only relevant tools RUBE_CREATE_PLAN — structures multi-app workflows into steps This solves context overload — instead of thousands of tool definitions, the model discovers tools on demand. Authentication — The Core Differentiator Managed OAuth handles the full flow for each app. Tokens are encrypted end