Corsair is an open source integration layer for apps and AI agents, built natively on the Model Context Protocol (MCP). It connects to GitHub, Slack, Gmail, and 200+ other services through one consistent syntax, handling OAuth, token refresh, webhooks, and rate limits so you don't build that logic for every integration. Corsair runs inside your own application. Credentials stay encrypted in your own database — Corsair does not store them on its own infrastructure. The hosted Hub takes care of connect pages and OAuth callback URLs so you don't need to build and secure those endpoints yourself. The project is Apache 2.0 licensed and supports Next.js, Node, Express, Hono, SvelteKit, Remix, and Astro. Free to start with the Hobby plan: unlimited tool calls, up to 50 connections, and up to 3 team members, no credit card required.
