generated: '2026-08-26'
method: probed
source: >-
  https://shop.rockthebells.com/llms.txt,
  https://shop.rockthebells.com/api/2024-10/graphql.json
description: >-
  Rock The Bells publishes a rate-limit POLICY but no numbers. The store's agent instructions state
  that the MCP endpoint is rate-limited per IP and that agents must back off on 429, without naming
  a quota or window. The GraphQL surface is more informative at runtime: every response carries a
  query-cost extension, which is the actual budget signal an agent should read.
limit_count: 0
limit_count_note: >-
  Zero PUBLISHED numeric limits. This is an honest zero, not an unchecked field — the policy exists
  and is documented, but no request-per-window figure, burst allowance or quota is stated anywhere
  on the store's own surface.
limits: []
signals:
- surface: MCP
  endpoint: https://shop.rockthebells.com/api/ucp/mcp
  scope: per-IP
  window: not stated
  limit: not stated
  status_on_exhaustion: 429
  client_guidance: Back off on 429 responses.
  headers: not documented
  evidence: >-
    llms.txt, "Important Rules": "Respect rate limits. The MCP endpoint is rate-limited per IP.
    Back off on 429 responses."
- surface: GraphQL Storefront
  endpoint: https://shop.rockthebells.com/api/2024-10/graphql.json
  scope: per-query calculated cost
  model: query-cost budget rather than request count
  runtime_signal: extensions.cost
  observed: >-
    OBSERVED LIVE on 2026-08-26. A two-field query returned
    "extensions":{"cost":{"requestedQueryCost":4}}; the introspection query returned
    "requestedQueryCost":3. The cost object is returned on every response, so an agent can read its
    consumption per call without any documentation.
  headers: none (cost is carried in the GraphQL response body, not in HTTP headers)
retry_after_supported: unknown
notes: >-
  No X-RateLimit-*, RateLimit-* or Retry-After header was observed on any successful response, and
  no 429 was triggered during probing (nothing here was load-tested — deliberately). An agent
  integrating with this store should treat extensions.cost as the primary budget signal on GraphQL
  and 429-with-backoff as the only contract on MCP.