Corsair

Open-source integration layer for AI agents with OAuth, permissions, webhooks, and multi-tenant execution.

Overview

Corsair is an open-source integration platform designed to help AI products and applications connect securely with third-party services. It handles the complex infrastructure needed for integrations—including OAuth flows, credential management, webhook handling, and multi-tenant isolation—so developers can focus on their core product.

The platform supports 15+ pre-built integrations (Gmail, Slack, Notion, HubSpot, Stripe, Linear, GitHub, and more) and allows teams to add custom integrations via open-source plugins. Corsair can be self-hosted for free or used via a managed cloud dashboard, with built-in permission controls that require explicit approval for destructive actions.

Unlike closed-source alternatives, Corsair's open-source nature means you're never blocked by a vendor's roadmap—fork the repo, add integrations yourself, or contribute back to the community.

Key features

15+ pre-built integrations (Gmail, Slack, Notion, HubSpot, Stripe, Linear, GitHub, etc.)
OAuth and multi-tenant credential management
Permission controls with approval workflows
Webhook support and data caching
Self-hosted or managed cloud deployment
Open-source TypeScript codebase
Agent-native design for AI applications
No credentials stored in Corsair's database

Pros

Open source—add custom integrations or fork the repo
Self-hosted option is free with no per-seat pricing
Credentials never stored in Corsair's database
Built-in permission controls protect against destructive actions
Handles complex integration logic (token refresh, rate limiting, webhooks)
Active community with 15.3k GitHub stars
Works with or without AI agents

Cons

Requires technical setup for self-hosting
Limited to pre-built integrations unless you build custom ones
Managed cloud tier starts at $200/month
Community support on free tier (Slack support only on Pro/Enterprise)

Use this if

You're building an AI agent or SaaS product that needs to integrate with multiple third-party services, want to avoid vendor lock-in, or need fine-grained control over permissions and credentials.

Skip this if

You only need integrations with a single service, prefer fully managed solutions without self-hosting, or don't need multi-tenant credential isolation.

Best for

AI agents needing third-party integrationsTeams building multi-tenant SaaS productsDevelopers wanting self-hosted integration infrastructureProducts requiring secure OAuth and credential managementTeams that need custom integrations beyond pre-built options