Skip to content
Universal Commerce Protocol Protocol registry / en
The UCP standardUCP vs ACPImplementAgentic commerceFramework
ConceptGEOllms.txtGlossaryAgentic paymentsAP2Visa and MastercardB2B agentic commerceMethodologyUse CasesWhy NowFor WhomManifestoFAQResourcesSourcesEcosystemValidatorAboutContact
FR Get in touch →

Local tool

Preflight a UCP profile in your browser.

A fast structural check with no upload, account or data transfer.

Monochrome ASCII-texture illustration of an optical instrument scanning a data cube.
PORTÉE The local preflight reviews a few structural elements. It is neither certification nor a conformance test.

Paste the content of a /.well-known/ucp profile. The check runs locally in your browser and verifies readable JSON and a few structural fields. It does not contact the merchant domain.

When to use it

The preflight is useful before a human review, a conformance-suite run or a public profile release. It can detect unreadable JSON, a missing version or missing structural blocks without sending the profile to an external service.

LOCAL / JSON / NO UPLOAD

No data is sent: everything stays in your browser.

How to read the result

A positive result only means that the file is readable and contains the minimum elements checked by this page. A negative result should be treated as a preparation warning: fix the format, review the expected fields and run the preflight again before more expensive testing.

What this tool does not certify

This preflight is not a UCP certification. It does not validate composed schemas, signatures, endpoints, capability negotiation or checkout behavior. For normative validation, use the official conformance tests and the official schema validator.

Checklist after the preflight

  1. test the profile against its declared UCP release;
  2. check every schema URL and advertised endpoint;
  3. test negotiation with compatible and incompatible platform profiles;
  4. run the conformance scenarios for every exposed capability.

Data and privacy

Pasted text remains in the browser. For sensitive profiles, still work from a test version and remove secrets, tokens, internal URLs or customer information before sharing any file.