Composio is a developer platform company founded in 2023 and headquartered in San Francisco. It provides an integration platform that gives AI agents secure, pre-authenticated access to more than 1,000 applications through a unified interface. The platform handles tool discovery, OAuth flows and API standardisation, abstracting away individual API connections, authentication logic and integration maintenance so that agents can execute tasks - sending emails, creating tickets, pulling analytics, posting updates - across combinations of tools from a single conversational interface.
The company's work spans AI agents, LLM tool use, API integration, OAuth authentication and developer platform infrastructure. Its customers range from Y Combinator-backed startups to enterprises such as Zoom and Glean, and more than 100,000 developers use the platform. Composio positions itself as infrastructure for the emerging AI agent ecosystem.
Composio has raised $29 million in a Series A round and counts Guillermo Rauch, chief executive of Vercel, and Dharmesh Shah, chief technology officer of HubSpot, among its angel investors. The company was founded to address a specific gap in the AI ecosystem: the lack of standardised, secure connectivity between agents and the applications they are asked to operate.
