# Corsair

> Corsair is an open-source integration layer for AI agents. Its TypeScript framework lets developers connect their agents and apps to hundreds of third-party services - Gmail, Slack, Stripe, Notion, GitHub and more - while Corsair handles the messy parts: OAuth, token refresh, webhook verification, rate limiting, permissions and multi-tenant credential isolation. Agents never touch raw API keys; Corsair resolves them internally and can require human approval before destructive actions. Founded in 2024 by Dev Jain and part of Y Combinator's Winter 2025 batch, the project is offered as a free self-hosted library, a hosted hub with a drop-in MCP URL, and a managed cloud SDK.

- **Founded:** 2024
- **Headquarters:** New York, New York, United States
- **Founders:** Dev Jain (CEO & Founder)
- **Team size:** 2
- **Products:** Corsair (open-source framework), Corsair Hub, Corsair Cloud SDK, Permission & approval engine
- **Notable:** Reached ~6,600 GitHub stars and 180+ forks as an open-source project, Shipped ~70 integration plugins (Gmail, Slack, Stripe, Notion, GitHub, HubSpot, Linear, and more), Accepted into Y Combinator's Winter 2025 batch

## Products & services

- **Corsair (open-source framework)** — A self-hostable TypeScript integration framework connecting agents and apps to hundreds of third-party APIs, with managed auth, token refresh, webhooks, rate limiting, and multi-tenant credential isolation. Apache-2.0 licensed.
- **Corsair Hub** — A hosted version at hub.corsair.dev offering a drop-in MCP URL so agents can connect to configured integrations without running any infrastructure.
- **Corsair Cloud SDK** — A managed cloud SDK (docs.corsair.dev) for programmatically provisioning connections, permissions, and workflows.
- **Permission & approval engine** — Per-integration permission modes (open, cautious, strict, readonly) and human-in-the-loop approval requests before destructive actions.

## Achievements

- Reached ~6,600 GitHub stars and 180+ forks as an open-source project
- Shipped ~70 integration plugins (Gmail, Slack, Stripe, Notion, GitHub, HubSpot, Linear, and more)
- Accepted into Y Combinator's Winter 2025 batch
- Publicly cited by YC partner Gustaf Alstromer as a rising open-source integration layer for agents

## Latest updates

- **2026-07** — Open-source repo at ~6,600 GitHub stars with an expanding library of ~70 integration plugins.
- **2025-03** — Raised a seed round as part of Y Combinator's W25 batch.

## Links

- Website: https://corsair.dev
- LinkedIn: https://www.linkedin.com/company/corsairdev
- Twitter/X: https://x.com/corsairdotdev
- GitHub: https://github.com/corsairdev/corsair

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Profile page: https://yespress.io/corsair-yc-w25
Published by YesPress — https://yespress.io
Last updated: 2026-07-31