Portage: open-source UCP implementation (agent CLI and Ruby merchant gems). Could ucp.dev list community implementations?

[tomtom87]

Hi UCP maintainers,

I maintain Portage, an MIT-licensed UCP implementation for both sides of a purchase:

• Agent / platform side: portage, a CLI plus a Claude Code plugin. It reads a store's UCP profile, searches the catalog, prices a cart and completes checkout over UCP. The shopper confirms every payment.
• Business side: portage-ucp, a Ruby gem that serves a UCP profile and the shopping capabilities. It has adapters for Shopify, WooCommerce, BigCommerce, Magento, Wix and Etsy. The current release, 0.14.0, targets 2026-08-25.

Docs: https://portage.readthedocs.io/en/latest/

As far as I can tell, ucp.dev doesn't yet list community or open-source implementations. The partner page covers companies only. Would you add one, or a section on an existing page, and include Portage? If a docs PR is welcome, I'm happy to open one with a simple table: name, role (business / platform), language, spec version, link.

Thanks for the work on the spec.