generated: '2026-08-26'
method: probed
status: published
source: https://mudwtr.com/agents.md
description: >-
  MUD\WTR serves TWO live, remote Model Context Protocol servers from its own domain, both advertised
  in its robots.txt, /agents.md and /llms.txt. They are Shopify platform servers bound to this
  merchant's shop (shop_id 13794345014, mud-wtr.myshopify.com) and served under mudwtr.com, so the
  endpoints, the catalog they expose and the carts/checkouts they create are MUD\WTR's. Tool lists
  below were captured verbatim from live `tools/list` calls on 2026-08-26 and saved alongside this
  file with their full JSON Schema inputSchemas.
deployment:
  mode: remote
  endpoint: https://mudwtr.com/api/ucp/mcp
  auth: none
  verified: probed
  checked: '2026-08-26'
  note: >-
    `tools/list` answers anonymously on both servers. Invocation differs: /api/mcp executes
    tools/call anonymously (search_catalog returned real MUD\WTR products during the probe), while
    /api/ucp/mcp returns error -32000 "AuthenticationRequired — a valid JWT is required" plus a
    required `meta.ucp-agent.profile` URI, so its write path is gated by Shopify agent
    authentication. No stdio package is published for either server.
servers:
- name: universal-commerce
  server_version: 0.1.0
  endpoint: https://mudwtr.com/api/ucp/mcp
  alternate_endpoint: https://mud-wtr.myshopify.com/api/ucp/mcp
  transport: http
  mcp_protocol_version: '2025-06-18'
  ucp_version: '2026-04-08'
  api_version_header: 'x-shopify-ucp-mcp-api-version: 2026-04-08'
  capabilities:
    tools: {listChanged: true}
    prompts: {listChanged: true}
    resources: {listChanged: true}
    logging: {}
  auth:
    list: none
    call: jwt
    detail: >-
      tools/call requires a Shopify agent JWT and a UCP agent profile URI passed as
      meta.ucp-agent.profile. Error -32000 AuthenticationRequired points at
      https://shopify.dev/docs/agents/get-started/authentication
  tools_file: mud-wtr-ucp-mcp-tools.json
  tool_count: 13
  tools:
  - name: search_catalog
    category: catalog
    description: Search for products from the online store, hosted on Shopify.
  - name: lookup_catalog
    category: catalog
    description: Look up multiple products or variants by identifier.
  - name: get_product
    category: catalog
    description: Retrieve complete product detail by identifier. Returns a singular product.
  - name: create_cart
    category: cart
    description: Creates a new cart.
  - name: get_cart
    category: cart
    description: Get the cart contents.
  - name: update_cart
    category: cart
    description: Perform updates to a cart.
  - name: cancel_cart
    category: cart
    description: Cancels a cart.
  - name: create_checkout
    category: checkout
    description: Creates a checkout. Returns line items, totals, discounts and taxes.
  - name: get_checkout
    category: checkout
    description: Returns details about the checkout, including line items, totals, discounts and taxes.
  - name: update_checkout
    category: checkout
    description: Updates a checkout.
  - name: complete_checkout
    category: checkout
    description: >-
      Completes a checkout and returns the order ID / Thank You Page URL. Buyer approval is required
      before payment, per the store's own robots.txt and agents.md.
  - name: cancel_checkout
    category: checkout
    description: Cancels a checkout.
  - name: get_order
    category: order
    description: Get the details of an order.
- name: storefront-renderer
  server_version: 0.1.0
  endpoint: https://mudwtr.com/api/mcp
  transport: http
  mcp_protocol_version: '2025-06-18'
  capabilities:
    tools: {listChanged: true}
    prompts: {listChanged: true}
    resources: {listChanged: true}
    logging: {}
  auth:
    list: none
    call: none
    detail: >-
      Anonymous end to end. A probe of tools/call search_catalog {"catalog":{"query":"rise"}} on
      2026-08-26 returned real MUD\WTR product records with gid://shopify/Product identifiers.
  tools_file: mud-wtr-storefront-mcp-tools.json
  tool_count: 5
  tools:
  - name: search_catalog
    category: catalog
    description: Search for products from the online store, hosted on Shopify.
  - name: get_product_details
    category: catalog
    description: >-
      Look up a product by ID; pass `options` to select a specific variant, plus country/language.
  - name: get_cart
    category: cart
    description: Get the cart including items, shipping options, discount info and checkout URL.
  - name: update_cart
    category: cart
    description: >-
      Add/remove/update line items, buyer identity, delivery addresses and options, discount codes,
      gift cards and note in one consolidated call.
  - name: search_shop_policies_and_faqs
    category: content
    description: Get facts about the store's policies, products or services.
discovery:
- source: https://mudwtr.com/robots.txt
  note: names the UCP discovery document and the UCP/MCP endpoint in a comment block
- source: https://mudwtr.com/.well-known/ucp
  note: UCP merchant profile declaring transport mcp and the endpoint
- source: https://mudwtr.com/agents.md
  note: canonical agent-facing description of the store; /llms.txt mirrors it