Corsair

Corsair is an open-source integration layer built specifically for AI agents. Instead of spending weeks wiring up individual API connections for every app your agent needs to talk to, Corsair gives you a ready-made platform that handles authentication, credential management, and connectivity to dozens of popular services. Think of it as middleware that sits between your AI agent and the tools your users already use — Gmail, Slack, Notion, HubSpot, Stripe, GitHub, and many more. The project is backed by Y Combinator and has already gathered over 10,000 stars on GitHub.

What makes Corsair stand out is how it simplifies the whole integration workflow. You don't need to build and maintain OAuth flows, refresh tokens, or handle rate limiting for each service. The platform provides a dashboard where you can see which integrations are connected, which ones are missing credentials, and manage everything from one place. The interface shows a clean table of users and their connected apps, with status indicators like "Connected," "Missing Credentials," or "Not Connected." This makes it easy to spot issues at a glance. Corsair is open source, so you can self-host it or use their hosted version at hub.corsair.dev.

Corsair is most useful for developers building AI agents or chatbots that need to interact with third-party services on behalf of users. If you're creating a customer support agent that needs to check a user's Stripe account, pull data from Notion, and send a Slack message, Corsair handles all those connections. It's also valuable for teams that want to offer integrations in their own AI products without building the plumbing themselves. The open-source nature means you can inspect the code, contribute, or customize it to fit your needs.