UCP Checker
EcosystemVerifiedUnofficial industry-standard UCP validator that lints live manifests, tests API latency, and generates verified badges.
UCP Checker (ucpchecker.com) is an independent tool that validates UCP endpoints in real time. It crawls merchant domains, lints their UCP manifests for schema compliance, tests endpoint latency, and generates timestamped "verified" badges. UCP Checker also runs a Chrome extension for passive monitoring and provides public uptime stats tracking 1,600+ verified merchants. As of early 2026, it is considered the de facto industry-standard validator for the UCP ecosystem.
Why This Matters for UCP
UCP Checker is the primary independent validation and monitoring tool for the UCP ecosystem, providing schema linting, latency testing, and uptime tracking for merchant endpoints.
UCP Capabilities
UCP Endpoint
Ecosystem — Endpoint not yet publicly available
Integration Example
// Check any merchant's UCP status:
// https://ucpchecker.com/status/{domain}
// e.g. https://ucpchecker.com/status/allbirds.comCategory
ValidatorsUCP Status
EcosystemTags
Pricing
freemium
Reviews
★★★★★4.7 (3 reviews)These are illustrative examples to show what reviews will look like. Submit your own experience below.
L. Hansen
Developer · Jan 20, 2026
Ran this against 12 different UCP endpoints as a benchmarking exercise. Results were consistent and matched manual inspection.
W. Anderson
QA Engineer · Feb 16, 2026
This is what we run in CI on every deploy. Catches schema drift early. False positive rate is basically zero in our experience.
G. Patel
Platform Engineer · Mar 6, 2026
Accurate validator. The error output is clear enough to act on without reading the spec every time. Does what it says.
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