The first tagged version
UCP 2026-01-11
Nothing to do
This release does not require changes to a working integration.
What changed
The first tagged release, published alongside the protocol's public launch. The bulk of the commits are documentation, linting and repository setup rather than protocol changes, which is what a first tag usually looks like.
Useful mainly as a reference point. This is the baseline that later releases are diffed against, and the version anyone who integrated at launch will have built on.
## What's Changed * docs: fix broken Google Pay Handler link in payment handler guide by @yanheChen in https://github.com/Universal-Commerce-Protocol/ucp/pull/4 * chore: add config for ruff by @wry-ry in https://github.com/Universal-Commerce-Protocol/ucp/pull/33 * chore: add *.code-workspace to .gitignore and .gitignore to cspell ignored files by @wry-ry in https://github.com/Universal-Commerce-Protocol/ucp/pull/36 * chore: increase verbosity of super-linter by @wry-ry in https://github.com/Universal-Commerce-Protocol/ucp/pull/42 * chore: allow super-linter to post status checks to PRs by @wry-ry in https://github.com/Universal-Commerce-Protocol/ucp/pull/43 * chore: more logging and config for linter by @wry-ry in https://github.com/Universal-Commerce-Protocol/ucp/pull/44 * chore: fix ruff format command args by @wry-ry in https://github.com/Universal-Commerce-Protocol/ucp/pull/45 * docs: Add salesforce logo to advisory partners folder by @aksbro-gpu in https://github.com/Universal-Commerce-Protocol/ucp/pull/46 * fix: updated hosted json refs to correct filenames with absolute paths by @wry-ry in https://github.com/Universal-Commerce-Protocol/ucp/pull/30 * style: Remove conflicting python lint rules and format with ruff by @drewolson-google in https://github.com/Universal-Commerce-Protocol/ucp/pull/52 * fix: update ECP card instrument example objects by @lemonmade in https://github.com/Universal-Commerce-Protocol/ucp/pull/26 * style: Fix ruff lint checks by @drewolson-google in https://github.com/Universal-Commerce-Protocol/ucp/pull/53 * docs: update Etsy logo to current version by @wry-ry in https://github.com/Universal-Commerce-Protocol/ucp/pull/57 * chore: correctly set up cspell to use config by @wry-ry in https://github.com/Universal-Commerce-Protocol/ucp/pull/59 * docs: add enhancement-proposal.md and update CONTRIBUTING.md by @wry-ry in https://github.com/Universal-Commerce-Protocol/ucp/pull/61 * docs: Refactor GOVERNANCE.md by @amithanda in https://github.com/Universal-Commerce-Protocol/ucp/pull/65 * chore: add mkdocs "mike" plugin config to version documentation by @wry-ry in https://github.com/Universal-Commerce-Protocol/ucp/pull/106 * docs: define capability maturity levels by @igrigorik in https://github.com/Universal-Commerce-Protocol/ucp/pull/86 * docs: add versioning page by @wry-ry in https://github.com/Universal-Commerce-Protocol/ucp/pull/110 * fix: update git tag to start with v by @wry-ry in https://github.com/Universal-Commerce-Protocol/ucp/pull/114 * chore: update mike to use a branch instead of release by @wry-ry in https://github.com/Universal-Commerce-Protocol/ucp/pull/111 ## New Contributors * @yanheChen made their first contribution in https://github.com/Universal-Commerce-Protocol/ucp/pull/4 * @aksbro-gpu made their first contribution in https://github.com/Universal-Commerce-Protocol/ucp/pull/46 * @amithanda made their first contribution in https://github.com/Universal-Commerce-Protocol/ucp/pull/65 **Full Changelog**: https://github.com/Universal-Commerce-Protocol/ucp/commits/v2026-01-11