Multi-version UCP Validator

Get discovered by AI agents with confidence

We test every version of the Universal Commerce Protocol implemented on your domain — conformance, backward compatibility, transports, error handling and capabilities — so AI shopping agents can find, understand, and transact with your storefront without surprises.

How it Works

A multi-stage verification pipeline that probes your storefront the same way an AI shopping agent would — then tells you exactly what's broken and why.

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Discovery across every version

We fetch /.well-known/ucp and detect every UCP version your domain advertises. Each version's declared services, capabilities, and payment handlers are parsed and cross-checked against the official schema.

Services
dev.ucp.shopping
Transports
REST · MCP
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Conformance Testing

40+ conformance tests exercise every declared capability with real requests. Schemas, status codes, headers, idempotency and error shapes are all validated.

Latest spec tested
UCP 2026-04-08

Backward compatibility, verified

Not every agent speaks the latest UCP version. When your server advertises a new version, we also probe older spec endpoints to confirm they still work — so you keep reaching every agent in the ecosystem, not just the latest ones.

2026
v1
v2
Every published version, checked per scan

Five reports, one scan

Every scan produces a full set of reports, each answering a specific question about how ready your storefront is for agentic commerce.

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Conformance Report

Are your responses correct and complete enough for AI agents to find products, build carts and complete transactions? We verify every response schema, header, and status code against the UCP spec.

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Capability Report

A full inventory of what your domain supports today — and what it's missing. Every declared capability is tested and graded, so you know exactly which features to implement next for the biggest impact.

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Backward Compatibility Report

Do you still support older UCP versions? Older agents won't upgrade overnight. We test every published version so your storefront reaches the broadest possible audience — not just the bleeding edge.

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Negative Scenario Testing

What happens when things go wrong? We simulate invalid requests, out-of-stock items, declined payments and expired sessions to verify your error shapes, messaging and escalation flows match what agents expect.

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Transport Layer Report

REST, MCP, or both? We scan every transport you expose and verify that the same capabilities and responses are consistent across all of them — so any agent can reach you on its preferred channel.

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Overall Grade

Every report rolls up into a single letter grade from A+ to F. Share a clean, public link with your team or include the badge on your engineering status page.

A- · 92 / 100

More than a score — the toolkit your team needs

A grade tells you where you stand. These tools help you fix what's broken and ship with confidence.

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Included

Business Profile Visualizer

See your UCP Business Profile the way an AI agent sees it. Every service, capability, transport binding, payment handler and configuration value rendered as a clean, interactive map — with pass/fail annotations pulled from the latest scan.

Explore any scan report to see it in action arrow_forward
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Coming Soon

Inspector

Act as an AI agent against your own site. Create sessions, add products, update shipping, complete orders — and see exactly what the agent would see. Turn the knobs, trigger edge cases, and get actionable hints on every failure.

Live debugging · Hints · Replay

Why it matters

Agentic commerce is here. If your storefront isn't discoverable, correct and resilient, you are invisible to the agents bringing you buyers.

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Discoverability

Get found by every shopping agent that speaks UCP — not just the ones running the latest version.

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Conversion

Catch the subtle bugs that silently break agent checkouts before they cost you real transactions.

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Velocity

Ship new UCP capabilities with confidence. Every change is automatically graded against the full conformance suite.

Grade your UCP implementation in under a minute

Drop in any domain. We probe every UCP version, run the full conformance suite and hand back a shareable report — no signup, no config.