{"tool":{"slug":"clerk","name":"Clerk","url":"https://www.canagentsuse.com/tools/clerk","websiteUrl":"https://clerk.com","docsUrl":"https://clerk.com/docs","githubUrl":"https://github.com/clerk","tagline":"Authentication and user management for modern apps.","shortDescription":"Auth, user management, organizations, billing integrations, and UI components for app builders.","agentSummary":"Agents can wire auth into frameworks quickly, but provider setup and production auth settings need review.","bestFor":"User signup, login, organizations, and app auth surfaces.","cautionNotes":"Key limitations: Security, redirect URLs, and provider credentials should be human-reviewed. Identity configuration, redirect URLs, provider credentials, user lifecycle actions, and permission scopes can lock users out or expose accounts if automated without review. API automation needs client-side throttling, idempotency where supported, pagination limits, retries, and audit logging. Browser automation can be brittle around UI changes, MFA, captchas, policy prompts, and hidden confirmation states.","pricingSummary":"Public MAU-based pricing with free and paid tiers.","authModel":"Secret keys, publishable keys, JWT/session auth, OAuth providers.","accountCreation":"Self-serve signup.","browserSupport":"Dashboard is important for instance configuration.","cliPackage":null,"apiBaseUrl":"https://api.clerk.com","mcpServer":null,"agentScore":59,"agentTier":"Usable","scoreBreakdown":{"score":59,"tier":"Usable","summary":"Usable: 59/100. Strongest in agent readability; weakest in agent safety.","groups":[{"key":"operability","label":"Machine operability","weight":25,"score":14,"maxScore":25,"signals":[{"slug":"api","label":"API","weight":10,"score":10,"maxScore":10,"supportLevel":"native","evidence":"Backend API and SDKs support users, organizations, sessions, and invitations."},{"slug":"mcp","label":"MCP","weight":4,"score":0,"maxScore":4,"supportLevel":"unknown","evidence":"No MCP server evidence listed."},{"slug":"cli","label":"CLI","weight":6,"score":0,"maxScore":6,"supportLevel":"unknown","evidence":"No CLI evidence listed."},{"slug":"browser","label":"Browser fallback","weight":5,"score":4,"maxScore":5,"supportLevel":"strong","evidence":"Dashboard configuration is often required."}]},{"key":"safety","label":"Agent safety","weight":25,"score":9.2,"maxScore":25,"signals":[{"slug":"sandbox","label":"Sandbox or test mode","weight":10,"score":0,"maxScore":10,"supportLevel":"unknown","evidence":"No clear evidence found."},{"slug":"scoped-auth","label":"Scoped auth","weight":6,"score":4.8,"maxScore":6,"supportLevel":"strong","evidence":"Auth supports scoped or permissioned access."},{"slug":"dry-run-preview","label":"Dry-run or preview","weight":4,"score":0,"maxScore":4,"supportLevel":"unknown","evidence":"No clear evidence found."},{"slug":"human-review","label":"Human review guidance","weight":3,"score":2.4,"maxScore":3,"supportLevel":"strong","evidence":"Caution notes identify workflows that need human review."},{"slug":"idempotency","label":"Idempotency or retry safety","weight":2,"score":2,"maxScore":2,"supportLevel":"native","evidence":"Docs or summaries mention retry/idempotency safety."}]},{"key":"readability","label":"Agent readability","weight":20,"score":17.4,"maxScore":20,"signals":[{"slug":"docs-quality","label":"Docs quality","weight":8,"score":6.4,"maxScore":8,"supportLevel":"strong","evidence":"Framework guides are practical for agents wiring apps."},{"slug":"pricing-clarity","label":"Pricing clarity","weight":5,"score":4,"maxScore":5,"supportLevel":"strong","evidence":"Public MAU-based pricing with free and paid tiers."},{"slug":"evidence-depth","label":"Evidence links","weight":4,"score":4,"maxScore":4,"supportLevel":"native","evidence":"5 signal evidence links listed."},{"slug":"docs-url","label":"Dedicated docs URL","weight":3,"score":3,"maxScore":3,"supportLevel":"native","evidence":"Dedicated documentation URL is listed."}]},{"key":"setup","label":"Auth and setup","weight":15,"score":12,"maxScore":15,"signals":[{"slug":"account-creation","label":"Account setup","weight":7,"score":5.6,"maxScore":7,"supportLevel":"strong","evidence":"Self-serve signup."},{"slug":"auth-clarity","label":"Auth model clarity","weight":5,"score":4,"maxScore":5,"supportLevel":"strong","evidence":"Secret keys, publishable keys, JWT/session auth, OAuth providers."},{"slug":"self-serve","label":"Self-serve onboarding","weight":3,"score":2.4,"maxScore":3,"supportLevel":"strong","evidence":"Onboarding appears self-serve or testable."}]},{"key":"reliability","label":"Production reliability","weight":15,"score":6.4,"maxScore":15,"signals":[{"slug":"webhook-events","label":"Webhooks or events","weight":5,"score":0,"maxScore":5,"supportLevel":"unknown","evidence":"No clear evidence found."},{"slug":"logs-audit","label":"Logs or audit trail","weight":4,"score":4,"maxScore":4,"supportLevel":"native","evidence":"Tool exposes logs, traces, or audit-friendly records."},{"slug":"versioned-api","label":"Versioned API","weight":3,"score":0,"maxScore":3,"supportLevel":"unknown","evidence":"No clear evidence found."},{"slug":"rate-limit-clarity","label":"Rate limit clarity","weight":3,"score":2.4,"maxScore":3,"supportLevel":"strong","evidence":"Tool documents usage limits, quotas, or credits."}]}]},"launchScore":360,"isFeatured":false,"categories":[{"slug":"auth-accounts","name":"Auth & accounts","description":"Authentication, identity, user management, and account flows.","sortOrder":50}],"useCases":[{"slug":"manage-users","name":"Manage users","description":"Create, authenticate, segment, and support users or teams."},{"slug":"ship-app","name":"Ship an app","description":"Provision infra, deploy, monitor, and iterate on production apps."}],"capabilities":[{"slug":"api","name":"API","group":"Agent access","supportLevel":"native","detail":"Backend API and SDKs support users, organizations, sessions, and invitations.","evidenceUrl":"https://clerk.com/docs"},{"slug":"browser","name":"Browser","group":"Agent access","supportLevel":"strong","detail":"Dashboard configuration is often required.","evidenceUrl":"https://clerk.com/docs"},{"slug":"account-creation","name":"Account creation","group":"Onboarding","supportLevel":"strong","detail":"Self-serve signup.","evidenceUrl":"https://clerk.com"},{"slug":"pricing-clarity","name":"Pricing clarity","group":"Buying","supportLevel":"strong","detail":"Public MAU-based pricing with free and paid tiers.","evidenceUrl":"https://clerk.com/pricing"},{"slug":"docs-quality","name":"Docs quality","group":"Understanding","supportLevel":"strong","detail":"Framework guides are practical for agents wiring apps.","evidenceUrl":"https://clerk.com/docs"}]}}