generated: '2026-09-19'
method: probed
source: Live headers on POST https://coinrailz.com/x402/ping (2026-09-19, unauthenticated) + https://coinrailz.com/.well-known/agent.json#rateLimits
  + agent-instructions.json + agent-registration.json
limit_count: 5
limits:
- scope: per-client, /x402/* services (observed)
  window: 60s
  limit: 200
  burst: null
  source: 'observed header ratelimit-policy: 200;w=60 on POST /x402/ping'
  method: probed
- scope: platform (published)
  window: 1 minute
  limit: 60
  burst: 10
  source: https://coinrailz.com/.well-known/agent.json#rateLimits.requestsPerMinute / burstLimit
  method: searched
  note: Published figure (60/min) is lower than the observed header policy (200/60s); both recorded.
- scope: platform (published)
  window: 1 hour
  limit: 1000
  source: agent.json#rateLimits.requestsPerHour
  method: searched
- scope: per-IP, GET /api/m2m/credits/trial
  window: 7 days
  limit: 1
  source: agent-instructions.json + live 402 body trial_access
  method: searched
- scope: per-IP, POST /.well-known/agent-registration.json
  window: 1 minute
  limit: 10
  source: agent-registration.json#registration.rateLimit
  method: searched
response_headers:
- ratelimit-limit
- ratelimit-policy
- ratelimit-remaining
- ratelimit-reset
exhaustion:
  status: 429
  code: RATE_LIMIT_EXCEEDED
  body_fields:
  - error
  - code
  - retryAfter
  retry_after_header: not observed (retryAfter is a body field per agent.json)
observed:
  url: https://coinrailz.com/x402/ping
  status: 402
  headers:
    ratelimit-limit: '200'
    ratelimit-policy: 200;w=60
    ratelimit-remaining: '199'
    ratelimit-reset: '60'
  fetched: '2026-09-19'
note: Credit metering headers (X-Credits-Used, X-Credits-Remaining, X-Recharge-Url) accompany paid calls per mcp-integration.json.