keratin/authn-server

Health v2 · maintenance only

Adoption not part of the score

1284 stars · 109 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Keratin AuthN is a standalone Go authentication microservice that manages user accounts, passwords, OAuth logins, and JWT-based sessions via secured HTTP endpoints. It isolates sensitive authentication logic from your application, with client libraries for Ruby, Go, Node.js backends and JavaScript frontends.

Use cases

• add username/password signup and login to my web app without building it myself
• self-host an authentication backend service
• add OAuth login with Google, Facebook, or GitHub
• implement passwordless email link login
• manage user sessions with JWTs across apps and APIs
• implement single sign-on across multiple domains
• handle password resets and forced password changes securely
• lock, archive, or moderate user accounts from my backend

When to choose

• you want authentication isolated in a dedicated microservice rather than an in-app library
• you need a language-agnostic auth backend with client libraries for multiple stacks
• you want hardened password handling, session revocation, and account moderation out of the box
• you prefer self-hosting your auth infrastructure

When to avoid

• you want a full identity provider with SAML, MFA, or enterprise SSO features
• you prefer an in-process auth library tightly coupled to your framework
• you need a managed auth-as-a-service with a hosted dashboard
• you require an MIT/Apache license, since this is LGPL-3.0

Facets

service · maturity maintenance

auth http-server api-framework security security web-development backend apis self-hosted self-hosted go authentication jwt oauth passwordless single-sign-on microservice session-management user-accounts linux macos docker web-server

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markdown · JSON · MCP: product_card(name="keratin/authn-server")