Developer Tools
Clerk
Last updated 2026-08-03 · benchmark measured 2026-08-03 — deterministic & reproducible
Clerk provides authentication and user management infrastructure for web applications.
Is Clerk production-ready?
Legit.Show scores Clerk 89 out of 100 — the simple average of its 6 measured frames. Legit.Show ran its deterministic 7-Frame production-readiness benchmark on Clerk (public-surface assessment), measured from the public surface with no LLM in the scoring path. Its strongest frame is Privacy; its weakest is Standards. 6 of the seven frames returned a score; Accessibility was not measurable on this service and is recorded as null — not as zero. Every frame it averages is published with its evidence on the Legit.Show listing.
The 7 Frames
- Performance — 80/100
- Accessibility — not measurable on this service (null — not scored as 0)
- Security — 80/100
- Privacy — 100/100
- Reliability — 100/100
- Standards — 75/100
- Discoverability — 100/100
What we measured
- Security headers present: HSTS, X-Frame-Options, X-Content-Type-Options, Referrer-Policy.
- No Content-Security-Policy.
- Served over HTTPS with a valid certificate.
- Real Lighthouse performance run — 278 ms to first byte.
- Returns a proper 404 for unknown routes.
- 3 of 3 sampled routes reachable.
- Has a reachable privacy policy.
- Sets cookies / loads scripts with no consent prompt.
Who it's for
Developers · SaaS companies · Startups · Fast-growing companies · Teams building with agents
Pricing
Hobby free, Pro $25/mo ($20/mo annual), Business $300/mo ($250/mo annual); MRUs at $0.02-$0.012/mo; SMS and enterprise connections have additional per-use fees