Composio

Composio is a developer platform designed to integrate artificial intelligence agents with over one thousand external applications through secure authentication, delegated access, and sandboxed execution environments. It provides a suite of tools for building, testing, and deploying AI-powered workflows that interact with real-world services such as Gmail, Slack, Notion, Google Calendar, Salesforce, HubSpot, LinkedIn, and many more. The platform operates as an infrastructure layer that sits between an AI agent’s decision-making logic and the actual API calls to third-party services. It handles credential management, token refresh, permission scoping, and rate limiting, so developers do not need to write custom authentication code for each application. Composio offers multiple delivery methods. Its SDK allows developers to programmatically define tool sets, manage user authorization, and execute actions in production environments. The CLI tool lets users install tools, configure authentication flows, and run workflows directly from the terminal, which is useful for scripting and automation tasks. For enterprise teams, Composio provides governance controls, single sign-on integration, and organization-wide policy management to ensure compliance with security requirements. A key component is the MCP Gateway, which acts as a managed routing layer for Model Context Protocol servers. This enables agents to discover and invoke tools from different sources without hard-coding endpoints. The platform supports just-in-time tool calls, meaning that an agent’s decision to use a particular service triggers the necessary API calls only when needed. This reduces unnecessary network traffic and improves response times. Parallel execution is built in, allowing multiple tool calls to run