UCP Conformance (spck)

July 16, 2026

Version updated for https://github.com/vishkaty/spck-conformance-action to version v1.0.0.

This action is used across all versions by ? repositories.

Action Type

This is a Composite action.

Go to the GitHub Marketplace to find the latest changes.

Action Summary

This GitHub Action adds a behavioral UCP conformance gate to your CI pipeline. It runs the spck-conformance suite against your UCP merchant server, checking for MUST deviations and ensuring compliance. The action supports both server and agent-side modes, allowing you to verify shopping agent functionality. It outputs JUnit reports with spec citations for any deviations found during testing.

What’s Changed

First release.

Server mode: runs the spck-conformance suite against a UCP merchant server; fails the build on MUST deviations; writes a JUnit report — every entry is named with its check id from the spec-derived register, and deviations include the full spec citation. Versions 2026-01-11 / 2026-01-23 / 2026-04-08 auto-detected.
Agent-lane mode: self-contained agent-side conformance harness (reference agent vs adversarial sandbox), no server needed.
Input validation (exactly one mode), pinned-version support, configurable JUnit path.

The action’s own CI proves the gate both ways on every change and weekly: agent lane passes, a non-UCP server fails the build, and a full run against the UCP reference sample merchant must produce a JUnit report consistent with the verdict.

Unofficial; not affiliated with the UCP project.