Title: Vixns Commerce Profile for Universal Commerce Protocol Author: vixns Published: September 9, 2026 Last modified: September 9, 2026 --- Search plugins ![](https://s.w.org/plugins/geopattern-icon/vixns-commerce-profile-ucp.svg) # Vixns Commerce Profile for Universal Commerce Protocol By [vixns](https://profiles.wordpress.org/vixns/) [Download](https://downloads.wordpress.org/plugin/vixns-commerce-profile-ucp.0.4.0.zip) * [Details](https://wordpress.org/plugins/vixns-commerce-profile-ucp/#description) * [Reviews](https://wordpress.org/plugins/vixns-commerce-profile-ucp/#reviews) * [Installation](https://wordpress.org/plugins/vixns-commerce-profile-ucp/#installation) * [Development](https://wordpress.org/plugins/vixns-commerce-profile-ucp/#developers) [Support](https://wordpress.org/support/plugin/vixns-commerce-profile-ucp/) ## Description Vixns Commerce Profile for Universal Commerce Protocol writes an honest business profile JSON to a static file at `/.well-known/ucp`, can expose UCP catalog REST( search / lookup / product), and can publish `keys[]` (JWK Set) with rotation for Web Bot Auth `type=jwks_uri` interop. This is a third-party WooCommerce integration by Vixns. It is not an official Universal Commerce Protocol product. * Spec target: 2026-08-25 * Never advertises checkout, cart, or payment handlers * Private keys stored under `uploads/vixns-commerce-profile-ucp/private/` (Apache/ IIS deny files are written automatically; block the path on nginx) * Optional product feed (JSONL), not linked from the profile * Catalog REST is intentionally open to agents that send a valid `UCP-Agent` header( same visibility as a public product catalog) ## Installation 1. Install and activate WooCommerce. 2. Upload the `vixns-commerce-profile-ucp` folder to `/wp-content/plugins/` (or install the ZIP via Plugins Add New). 3. Activate **Vixns Commerce Profile for Universal Commerce Protocol**. 4. Configure your web server to serve `/.well-known/ucp` as static JSON with `Cache- Control: public, max-age≥60` and **no redirects**. 5. Open WooCommerce Settings **Vixns UCP**, set the canonical HTTPS host if needed, then **Generate now**. Example nginx location (adjust `root`): ``` location = /.well-known/ucp { default_type application/json; add_header Cache-Control "public, max-age=300" always; add_header Access-Control-Allow-Origin "*" always; add_header Access-Control-Allow-Methods "GET, HEAD" always; try_files /.well-known/ucp =404; } # Deny private key material (nginx ignores .htaccess): location ^~ /wp-content/uploads/vixns-commerce-profile-ucp/private/ { deny all; return 403; } ``` ## FAQ ### How do I serve /.well-known/ucp? See the nginx example under Installation. Do not apply wwwapex redirects to this URI — UCP platforms do not follow 3xx on the profile URL. ### Web Bot Auth Use: `Signature-Agent: sig1="https://yoursite/.well-known/ucp";type=jwks_uri` Omitting `type` defaults to `directory`, which does not read this static profile. ### Catalog REST Base: `/wp-json/ucp/v1` — POST `/catalog/search`, `/catalog/lookup`, `/catalog/product`. Requires header: `UCP-Agent: profile="https://yoursite/.well-known/ucp"`. There is no WordPress cookie auth on these routes (agent discovery). Disable Catalog REST in settings if you do not want them. ### Where are private keys stored? Default: `wp-content/uploads/vixns-commerce-profile-ucp/private/`. Prefer a path outside the document root via the `vixns_ucp_private_key_dir` filter. On nginx, always deny the default directory explicitly. ### Is this an official Universal Commerce Protocol plugin? No. It is developed by Vixns as a third-party WooCommerce integration. ## Reviews There are no reviews for this plugin. ## Contributors & Developers “Vixns Commerce Profile for Universal Commerce Protocol” is open source software. The following people have contributed to this plugin. Contributors * [ vixns ](https://profiles.wordpress.org/vixns/) [Translate “Vixns Commerce Profile for Universal Commerce Protocol” into your language.](https://translate.wordpress.org/projects/wp-plugins/vixns-commerce-profile-ucp) ### Interested in development? [Browse the code](https://plugins.trac.wordpress.org/browser/vixns-commerce-profile-ucp/), check out the [SVN repository](https://plugins.svn.wordpress.org/vixns-commerce-profile-ucp/), or subscribe to the [development log](https://plugins.trac.wordpress.org/log/vixns-commerce-profile-ucp/) by [RSS](https://plugins.trac.wordpress.org/log/vixns-commerce-profile-ucp/?limit=100&mode=stop_on_copy&format=rss). ## Changelog #### 0.4.0 * Renamed for WordPress.org trademark clarity (slug vixns-commerce-profile-ucp). * Private keys and feed default under uploads/{slug}/; tightened write allowlist to .well-known + uploads plugin dir. #### 0.3.0 * Signing keys[] (EdDSA/ES256), rotate/revoke, WBA jwks_uri documentation. * Path allowlist for profile/feed writes; HTTPS-only canonical host / probe. * Test-only failure filters gated behind VIXNS_UCP_TESTING. #### 0.2.0 * Catalog REST: search, lookup, product; profile advertises services + catalog capabilities. #### 0.1.0 * Initial release: profile generation, dual scheduler, WP-CLI, admin status/probe, optional JSONL feed. ## Meta * Version **0.4.0** * Last updated **1 day ago** * Active installations **Fewer than 10** * WordPress version ** 6.4 or higher ** * Tested up to **7.1** * PHP version ** 7.4 or higher ** * Tags * [ai agents](https://wordpress.org/plugins/tags/ai-agents/)[discovery](https://wordpress.org/plugins/tags/discovery/) [ucp](https://wordpress.org/plugins/tags/ucp/)[well-known](https://wordpress.org/plugins/tags/well-known/) [woocommerce](https://wordpress.org/plugins/tags/woocommerce/) * [Advanced View](https://wordpress.org/plugins/vixns-commerce-profile-ucp/advanced/) ## Ratings No reviews have been submitted yet. [Your review](https://wordpress.org/support/plugin/vixns-commerce-profile-ucp/reviews/#new-post) [See all reviews](https://wordpress.org/support/plugin/vixns-commerce-profile-ucp/reviews/) ## Contributors * [ vixns ](https://profiles.wordpress.org/vixns/) ## Support Got something to say? Need help? [View support forum](https://wordpress.org/support/plugin/vixns-commerce-profile-ucp/)