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err:unkey:application:service_unavailable
The API failed on our side and couldn’t finish your request. You get HTTP 500, and detail names what failed. Unless detail says otherwise, the request didn’t take effect.
Example response

How to fix

  1. Retry with exponential backoff, and check the Unkey status page for an incident.
  2. If it keeps failing, contact support with the requestId.
Two cases need something else:
  • HTTP 503 on domains.listDomains. Your filters match too many domains. The detail is The domain scan limit was reached. Narrow the project, app, environment, or search filters and retry. Narrow the filters.
  • Resource limits are not configured for this workspace. Your workspace is missing its plan limits. Retrying won’t help, so contact support.
Last modified on October 6, 2026