generated: '2026-08-25'
method: probed
source: 'Published guidance at https://www.maisonette.com/llms.txt plus response headers
  observed live on https://www.maisonette.com/api/ucp/mcp, 2026-08-25.'
limit_count: 0
note: 'Maisonette states that rate limiting exists but publishes no number. Its llms.txt
  says: "Respect rate limits. The MCP endpoint is rate-limited per IP. Back off on 429
  responses." No quota, window, or burst figure is given anywhere, and no standard rate-limit
  headers are returned. The only runtime cost signal is a Shopify complexity score,
  which tells an agent what a call cost but not what budget remains. An honest zero:
  the policy is stated, the limits are not.'
limits: []
scope_documented: per IP
status_on_exhaustion: 429
retry_guidance: 'Back off on 429 responses (stated in llms.txt). No Retry-After header
  was observed on any successful response; whether one is returned on an actual 429 was
  not tested — deliberately, since eliciting a 429 would mean abusing the endpoint.'
response_headers:
  standard_present: []
  standard_absent:
  - X-RateLimit-Limit
  - X-RateLimit-Remaining
  - X-RateLimit-Reset
  - RateLimit-Limit
  - RateLimit-Remaining
  - RateLimit-Reset
  - Retry-After
  vendor_present:
  - name: shopify-complexity-score
    observed_values:
    - '1380'
    - '620'
    description: Cost of the call in Shopify complexity units. Varies with the request
      — tools/list on the UCP endpoint scored 1380, a repeat scored 620.
  - name: shopify-complexity-score-v2
    observed_values:
    - '138'
    - '62'
    description: The v2 scale of the same signal, one tenth of the v1 value in both
      observations.
  - name: x-shopify-ucp-mcp-api-version
    observed_values:
    - '2026-04-08'
    description: Not a rate-limit header; recorded because it is the protocol-version
      signal returned alongside.
surfaces_covered:
- https://www.maisonette.com/api/ucp/mcp
- https://www.maisonette.com/api/mcp
docs: https://www.maisonette.com/llms.txt