UCP Profile Validator
Enter a URL to fetch and validate its UCP manifest, or paste JSON directly. Get a compliance score with detailed pass/fail results for every field.
We fetch /.well-known/ucp server-side to avoid CORS issues. Your URL is not stored or logged.
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What is checked
The validator checks the top-level ucp object, date-based versions, service transports and endpoints, reverse-domain capability and payment-handler registries, supported-version URLs, and public JWK safety. For authoritative conformance details, consult the released UCP specification. Need a starter file? Use the profile generator.