corsair
Your Agent's Integration Layer
The Lens
By Erik Loyd, SaaS CEO and former COO/CFO of an AWS Premier Partner.
Updated Aug 2026
Corsair is the layer that stops your agent from holding API keys. You connect it once to Gmail, Slack, Notion, Stripe, Linear, GitHub, and the rest, and the agent gets typed tool calls instead of credentials. When it tries something destructive, Corsair intercepts and generates an approval link showing exactly what is about to happen. Apache 2.0, and the full SDK self-hosts for nothing.
The permission model is per-integration rather than global, which is the right shape. GitHub can sit in strict mode while Slack runs open, and individual endpoints override the mode. It also does multi-tenancy properly: flip a flag and every tenant gets isolated credentials, storage, and permission handling, which is the part teams normally build badly themselves.
Self-hosting is free with no per-seat charge and no cap. The hosted Hub has a $0 Hobby tier at 50 connections and 100k webhook events, then jumps to $200/mo Pro for unlimited. That is a wide gap, so model your connection count before committing.
The catch is maturity. The repo is young, the integration catalog is community-extended, and an approval gate is only as good as its coverage. Audit which of your integrations actually classify a destructive action correctly before trusting it with production credentials.
Free vs Self-Hosted vs Paid
free self hosted paid cloudFree (Self-Hosted)
The full SDK under Apache 2.0. Every integration plugin, the permission modes, the approval flow, multi-tenancy, and caching. No per-seat pricing and no feature held back for the cloud.
Cloud Pricing (Corsair Hub)
- Hobby: $0/mo. 50 connections, 100k webhook events, up to 3 team members, unlimited tool calls, Corsair branding on the consent screen, Discord support.
- Pro: $200/mo. Unlimited connections, webhooks, and team members, custom consent-screen branding, Slack support, integrations built by the Corsair team.
- Enterprise: custom. Custom limits and support.
No credit card for the free tier. Corsair states that Hub relays credentials rather than storing them.
Self-Hosted Costs
A Node service plus a database for cached integration data. A $20 to $50/mo VM covers a small deployment. The ongoing cost is upkeep: token refresh, webhook signature verification, and third-party API deprecations are exactly what the project exists to absorb, and self-hosting means you absorb the version upgrades instead.
When to Pay
The $0 to $200/mo jump is the decision. Under 50 connections and 3 people, Hobby is free and fine. Past that, compare $200/mo against a VM plus the hours you spend chasing OAuth changes. Self-host when credentials must never transit a vendor, which is a legitimate reason on its own.
Self-hosting the full SDK is free under Apache 2.0. Corsair Hub is $0 for 50 connections and 3 seats, then $200/mo Pro with nothing in between.
What to do by team size
- Solo
- free; Hobby covers 50 connections at no cost
- Small team
- free on Hobby until you pass 3 seats or 50 connections
- Medium team
- Pro at $200/mo, or self-host if you would rather own the upgrades
- Large team
- Self-host for credential control, or Enterprise for custom limits and support
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Trust Signals
License: Apache License 2.0
GitHub reports NOASSERTION; the LICENSE file is Apache 2.0 verbatim.
Commercial use: ✓ Yes
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