generated: '2026-09-04'
method: probed
source: >-
  https://onewillow.com/.well-known/ucp.json, response headers from
  https://onewillow.com/api/ucp/mcp, https://onewillow.com/agents.md
summary: >-
  Willow does not run a developer programme, so there is no API changelog, no deprecation policy, no
  SLA and no status page of its own. What it does version — and versions well — is the commerce
  protocol its storefront speaks: three dated UCP versions are simultaneously served and advertised
  in the discovery document, and the live endpoint stamps the active one on every response.
versioning:
  scheme: dated protocol versions (YYYY-MM-DD), negotiated via /.well-known/ucp.json
  current: '2026-08-25'
  response_header: 'x-shopify-ucp-mcp-api-version: 2026-08-25'
  mcp_protocol_version: '2024-11-05'
  supported_versions:
    - version: '2026-08-25'
      status: current
      transport: mcp
      endpoint: https://onewillow.com/api/ucp/mcp
      spec: https://ucp.dev/2026-08-25/specification/overview/
    - version: '2026-04-08'
      status: supported
      transport: embedded
      discovery: https://willowpump.myshopify.com/.well-known/ucp/2026-04-08
      spec: https://ucp.dev/2026-04-08/specification/overview/
    - version: '2026-01-23'
      status: supported
      discovery: https://willowpump.myshopify.com/.well-known/ucp/2026-01-23
  note: >-
    Older versions remain individually addressable at versioned discovery URLs, which is a de facto
    migration path — but no sunset date is published for any of them.
deprecation_policy:
  published: false
  sunset_header: not observed
  deprecation_header: not observed
  rfc8594: false
status_page:
  published: false
  note: >-
    No status.onewillow.com or status.willowpump.com exists in certificate transparency for either
    domain, and neither agents.md nor llms.txt names a status page. The underlying platform's status
    page (Shopify) is not Willow's to claim.
sla:
  published: false
support:
  help_center: https://help.onewillow.com/s
  support_page: https://onewillow.com/pages/willow-support
  contact: https://onewillow.com/pages/contact
  note: Human customer-care channels only; no developer support channel exists.
deprecated_operations: []