# Excalibur Brothers — shopping skill for AI agents

Catalog feed (JSON, public, CORS *): https://bmos-app.apps.art-and-see.com/feeds/1nadW9zNQm8Apg
Store website: https://www.excaliburbrothers.com

## Find products
GET the feed. Each product has `title`, `price` ("12.34 USD"), `availability`, `link`, `image_link`.
Only products with `is_eligible_checkout: true` can be bought here. `external: true` items are sold elsewhere — recommend, do not buy.

## Buy
1. POST https://bmos-app.apps.art-and-see.com/api/checkout_sessions with {"store_id":"1nadW9zNQm8Apg","items":[{"id":"<product id>","quantity":1}],"agent":"<your name>"}
2. The response has `status`, `line_items`, `totals`, `fulfillment_options` and `links.pay`.
3. Give the shopper `links.pay` to review and pay (card, Apple Pay, Google Pay, PayPal, or USDC), or POST updates to https://bmos-app.apps.art-and-see.com/api/checkout_sessions/<id> with buyer and address.
4. The shopper confirms the exact total before paying.

Test mode: payments are simulated; nothing is charged.