generated: '2026-08-11'
method: searched
source: https://davidprotein.com/agents.md
limit_count: 0
note: >-
  David states that the MCP endpoint is rate limited but publishes no number, no window and
  no scope. No RateLimit-* or X-RateLimit-* header appeared on any of the probe responses,
  so an agent has no runtime budget signal at all - it can only discover the limit by
  being refused.
policy:
  documented: true
  quote: >-
    "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
  burst: not published
  status_on_exhaustion: 429
response_headers:
  ratelimit_standard: none observed
  x_ratelimit: none observed
  retry_after: none observed
  observed_headers:
  - {name: shopify-complexity-score, example: '0'}
  - {name: shopify-complexity-score-v2, example: '27'}
  note: >-
    The two shopify-complexity-score headers are the only cost signal returned. They are
    undocumented on David's site and carry no budget, remaining count or reset time, so
    they are not a usable rate-limit signal for an agent.
limits: []
x-evidence:
  fetched: '2026-08-11'
  urls:
  - {url: https://davidprotein.com/agents.md, status: 200}
  - {url: https://davidprotein.com/api/mcp, status: 200}