Willow

Willow Pump UCP Commerce MCP

Willow's storefront agent surface — a JSON-RPC 2.0 Model Context Protocol endpoint implementing the Universal Commerce Protocol 2026-08-25 shopping service. tools/list answers unauthenticated and returns 13 tools with full JSON Schema 2020-12 input schemas: search_catalog, lookup_catalog and get_product for the catalog; create/get/update/cancel_cart and create/get/update/complete/ cancel_checkout for the purchase flow; and get_order behind a signed agent JWT. Every tools/call requires a resolvable UCP agent profile URI, complete_checkout requires an idempotency key, and payment requires explicit buyer approval. The runtime is Shopify's universal-commerce server running under Willow's own domain and transacting Willow's own catalog.

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Documentation

📖
Documentation
https://onewillow.com/agents.md

Other Resources

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APIsJSON
https://raw.githubusercontent.com/api-evangelist/willow/refs/heads/main/apis.yml

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API entry from apis.yml

apis.yml Raw ↑ 
name: Willow Pump UCP Commerce MCP
description: 'Willow''s storefront agent surface — a JSON-RPC 2.0 Model Context Protocol endpoint implementing
  the Universal Commerce Protocol 2026-08-25 shopping service. tools/list answers unauthenticated and
  returns 13 tools with full JSON Schema 2020-12 input schemas: search_catalog, lookup_catalog and get_product
  for the catalog; create/get/update/cancel_cart and create/get/update/complete/ cancel_checkout for the
  purchase flow; and get_order behind a signed agent JWT. Every tools/call requires a resolvable UCP agent
  profile URI, complete_checkout requires an idempotency key, and payment requires explicit buyer approval.
  The runtime is Shopify''s universal-commerce server running under Willow''s own domain and transacting
  Willow''s own catalog.'
humanURL: https://onewillow.com/agents.md
baseURL: https://onewillow.com/api/ucp/mcp
image: https://onewillow.com/cdn/shop/files/OG-Image_db607121-7a26-49c9-b231-3a1e572a0fca_1200x630.jpg?v=1716782735
tags:
- Agentic Commerce
- MCP
- UCP
- Ecommerce
- Consumer Health
- agent-native
tags_raw:
- agentic-commerce
- mcp
- ucp
- ecommerce
- consumer-health
- agent-native
properties:
- type: Documentation
  url: https://onewillow.com/agents.md