Current documented limits
| Constraint | Current value | Scope | Verified source |
|---|---|---|---|
| backend request allowanceEndpoint-specific and frontend limits can apply in addition to the backend allowance. | Production: 1,000 requests/10s; development: 100/10s | Per Clerk instance | ClerkSep 17, 2026 |
| invitation creationOrganization invitations use separate documented counts. | 100/hour individual; 25/hour bulk | Instance | ClerkSep 17, 2026 |
| members per organizationB2B-enabled plans can configure higher or unlimited membership. | 5 default; 20 maximum without B2B add-on | Organizations | ClerkSep 17, 2026 |
| free retained-user allowanceMRU is a billing metric distinct from total historical user records. | 50,000 MRUs per application | Free | ClerkSep 17, 2026 |
How to apply Clerk limits safely
The monitored baseline covers backend request allowance, invitation creation, members per organization, free retained-user allowance. Treat these as separate constraints rather than one platform-wide capacity number: a workload can fit one row and still fail another because the plan, model, endpoint, runtime, region, invocation mode, or account scope differs.
- Match the production workload to the exact scope printed beside each value and confirm it in the active Clerk console, configuration, or response headers.
- Measure the serialized request, token volume, duration, concurrency, storage, or connection demand at realistic percentiles, then preserve headroom for bursts and retries.
- Check every adjacent layer—client, SDK, gateway, proxy, queue, database, and downstream service—for a smaller effective limit before changing architecture.
Specific limit pages
These pages exist because the constraint has a distinct implementation or troubleshooting intent. Closely related keyword variations stay consolidated.
Clerk Backend API Rate Limits
Clerk Backend API Rate Limits, verified against Clerk's official documentation with scope, implementation impact, caveats, and a direct check.
Clerk Invitation Rate Limits
Clerk Invitation Rate Limits, verified against Clerk's official documentation with scope, implementation impact, caveats, and a direct check.
Clerk Organization Member Limits
Clerk Organization Member Limits, verified against Clerk's official documentation with scope, implementation impact, caveats, and a direct check.
Clerk Free Monthly Retained Users
Clerk Free Monthly Retained Users, verified against Clerk's official documentation with scope, implementation impact, caveats, and a direct check.