generated: '2026-08-26'
method: probed
source: https://mudwtr.com/agents.md and response-header inspection of every surface, 2026-08-26
description: >-
  MUD\WTR states that its MCP endpoint is rate-limited but publishes no numbers, and no
  RateLimit-*/X-RateLimit-*/Retry-After header was present on any successful response observed
  during this pass. The one machine-readable cost signal on the surface is the GraphQL query-cost
  figure returned in extensions.
limit_count: 0
limits: []
documented_policy:
- surface: MCP (https://mudwtr.com/api/ucp/mcp, https://mudwtr.com/api/mcp)
  statement: >-
    "Respect rate limits. The MCP endpoint is rate-limited per IP. Back off on 429 responses."
  scope: per-ip
  window: not published
  limit: not published
  status_on_exhaustion: 429
  source: https://mudwtr.com/agents.md
runtime_signals:
- surface: https://mudwtr.com/api/2025-10/graphql.json
  signal: extensions.cost.requestedQueryCost
  observed: true
  examples:
  - query: '{shop{name description primaryDomain{url}}}'
    requestedQueryCost: 3
  - query: '{publicApiVersions{handle supported displayName}}'
    requestedQueryCost: 1
  - query: '{products(first:5){edges{node{id title}}}}'
    requestedQueryCost: 7
  note: >-
    Only requestedQueryCost was returned; the actualQueryCost and throttleStatus fields (currentlyAvailable,
    maximumAvailable, restoreRate) that would let an agent budget against a leaky bucket were absent
    from every response observed. An agent can price a query but cannot see its remaining budget.
headers_observed:
  ratelimit: []
  x_ratelimit: []
  retry_after: []
  other:
  - x-request-id
  - x-shopify-api-version
  - x-shopify-ucp-mcp-api-version
  - x-dc
notes:
- No documented limit exists for the Storefront GraphQL API or the /products.json, /collections.json and /cart.js endpoints on any mudwtr.com page.
- No 429 was triggered during this pass; probing was deliberately light.