corsair.dev

What It Is

Corsair is an open-source integration layer for AI Agents and developer products. Its goal is to connect commonly used apps such as Gmail, Slack, Notion, Google Calendar, Stripe, Airtable, Linear, and GitHub into your product. It focuses on long-term maintenance pain points such as constantly changing third-party APIs, rotating authentication flows, webhook verification, rate limits, and multi-tenant credential isolation.

Core Capabilities

From a feature perspective, Corsair is more than a simple API wrapper. It provides plugin-based integrations, permission gating, approval links, triggers, workflows, caching, and credential resolution. The page emphasizes that Agents never see API Keys; Corsair resolves credentials internally at call time. The hosted version also uses envelope encryption to protect secrets. It can serve AI Agents, but can also be used as a regular typed library to implement features such as “sync Airtable,” “create a calendar invite,” or “send a Slack message.”

Technical Form and Ecosystem

Corsair is explicitly an open-source TypeScript project, with examples using npm install corsair and corsair.ts. It supports a fully self-hosted SDK, offers a hosted version at app.corsair.dev, and provides a Cloud SDK for creating instances, tenants, plugins, and permissions via API. Its ecosystem already includes integrations for Gmail, Slack, Notion, HubSpot, GCal, Stripe, Sheets, Discord, Tavily, and more. If an integration is missing, developers can submit a PR, fork the project, or scaffold a new plugin.

Pricing and Deployment

Self-hosting is one of Corsair’s standout selling points: the copy clearly states that the full SDK can be run on your own infrastructure for free, with no per-seat pricing and no markup on third-party API calls you already pay for. The hosted version is suitable for teams that want to go live in minutes, but the page does not disclose specific pricing, quotas, SLA, or enterprise support details.

Pros, Cons, and Who It’s For

Its strengths are that it is open-source, controllable, and self-hostable, while covering the hardest parts of the integration layer: authentication, permissions, caching, and multi-tenant security. It is valuable for teams building AI Agents, multi-tenant SaaS products, and internal operations tools. The limitations are that the main content only clearly mentions TypeScript, with no details on SDKs for other languages. The hosted version also lacks information on commercial terms, compliance certifications, and support options.

Access from China

The page does not provide information about mainland China network access, payment methods, or local compliance, so its accessibility should be considered unknown. For teams deploying in China, the self-hosted route should be prioritized. Alternatives worth comparing include n8n, Pipedream, Zapier, Make, and Composio.