generated: '2026-07-18'
method: searched
source: https://chill.com/llms.txt + https://chill.com/.well-known/ucp
audience: null
summary: >-
  Chill.com publishes real agent-access guidance: an llms.txt agent guide plus a
  Universal Commerce Protocol (UCP) merchant profile and MCP endpoint. This captures
  the provider's own stated execution contract for AI agents, not a derived one.
access_classes:
- class: connected
  consequence: read
  operations: [browse products, product JSON, collection JSON, catalog search/lookup]
  auth_required: false
  note: Read-only browsing needs no authentication.
- class: acting
  consequence: physical
  operations: [create_cart, create_checkout, update_checkout, complete_checkout]
  auth_required: true
  auth: Shopify Customer Account OAuth (customer-account-mcp-api:full)
  human_in_the_loop: required
  note: >-
    Checkout / payment completion requires explicit, contemporaneous buyer approval
    (buyer-approval invariant). Agents unable to obtain approval at payment time must
    route through the Shop skill (https://shop.app/SKILL.md) / Shop Pay.
controls:
  buyer_approval_invariant: true
  rate_limited: true
  rate_limit_signal: HTTP 429
  recommended_skill: https://shop.app/SKILL.md