Corsair

What It Does

Corsair is an open-source integration platform designed specifically for AI agents and products that need to connect to third-party services. It provides a production-ready infrastructure layer that handles OAuth flows, credential management, webhook processing, and API communication across dozens of popular SaaS tools — from Gmail and Slack to Notion, HubSpot, Linear, and beyond.

Who It's For & Key Problems Solved

Built for developers building AI agents, automation products, or any application requiring multi-tenant integrations, Corsair solves the maintenance burden of managing third-party API connections. Instead of hand-coding OAuth flows, token refresh logic, rate limit handling, and error recovery for each integration, teams can drop in Corsair's SDK and immediately access a library of pre-built, tested connectors. The platform handles API deprecations, schema changes, and credential isolation automatically, letting engineering teams focus on their core product rather than integration plumbing.

Key Features & Capabilities

• Multi-tenant credential isolation – Securely manages OAuth tokens and API keys per user/organization • Permission management – Destructive actions require explicit user approval before execution • Real-time data sync – Webhooks and polling keep cached data fresh while respecting rate limits • Self-hosting option – Run the entire SDK on your infrastructure at zero cost, no vendor lock-in • Open-source extensibility – Fork the repo or contribute new integrations via PR when you need something custom • Production-grade auth flows – Handles token refresh, signature verification, and error handling across providers • Database-agnostic – Stores credentials and data in your own database, not on Corsair's servers

Typical Workflows & Use Cases

Developers integrate Corsair by initializing the SDK with their database connection and desired plugins (e.g., Gmail, Slack, Notion). AI agents can then execute authenticated actions like sending emails, creating calendar events, posting to Slack channels, or syncing Airtable records — all without ever seeing raw API credentials. Users approve sensitive operations through hosted permission pages, and the platform handles all token lifecycle management behind the scenes.

Integrations

Corsair supports popular tools including Gmail, Slack, Notion, Google Calendar, HubSpot, Airtable, Linear, GitHub, Stripe, Discord, Google Sheets, and many more. The open-source architecture means any missing integration can be scaffolded and added by the community or your team.

What Differentiates It

Unlike closed-source alternatives, Corsair is fully transparent and forkable. The hosted version holds zero customer credentials — all authentication data lives in your own database, eliminating single points of compromise. This architecture, combined with unlimited integrations at a flat rate and the ability to self-host for free, positions Corsair as a secure, cost-effective alternative to traditional iPaaS vendors.