Corsair is an open source integration layer for AI agents and applications, 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 developers don't rebuild that logic for every new integration. Unlike many integration platforms, Corsair runs inside your own application and never stores user credentials on its own infrastructure — everything stays encrypted in your own database, with the hosted Hub only managing connect pages and OAuth callback URLs. The project is Apache 2.0 licensed, supports Next.js, Node, Express, Hono, SvelteKit, Remix, and Astro
