Compare Tools
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Category
Select 2–3 tools to compare
Clerk
KeycloakAgent Sdk
Token Delegation
Human In The Loop
Fga
Mcp Support
Async Authorization
Pricing
Free up to 10k MAU$25/mo ProCustom Enterprise
Free (self-hosted)Red Hat SSO (commercial support)
Open Source
Self-Hosted
SDK Languages
javascripttypescript
javascriptjavapythongo
Frameworks
vercel-ailangchainnextjsremix
None listed
Compliance
soc2gdpr
gdpr
Best For
Next.js and React AI apps needing fast auth setup with prebuilt UI components
Enterprise on-prem identity; legacy system integration; organizations standardized on Red Hat / Java stacks
Limitations
JavaScript/TypeScript only; no token delegation or FGA; not designed for complex agent authorization patterns
No agent SDK, no FGA, no human-in-the-loop; UI and developer experience are dated; heavy Java-based deployment
Supported Not supported Unverified