generated: '2026-09-19'
method: probed
source: >-
  Response headers observed on https://relay2--5de8b3b2995311f1a5481607ee4eb77e.web.val.run/ (GET root,
  GET /.well-known/agent-card.json, POST JSON-RPC) on 2026-09-19.
limit_count: 1
description: >-
  Relay publishes no rate-limit documentation (its documentation host is a paused surge.sh page, HTTP
  403). The endpoint does return a runtime rate-limit signal on every response, but it is set by the
  hosting platform's edge (Val Town, fronted by Cloudflare and Render), not by Relay: the identical
  x-ratelimit-* triple appears on a nonexistent *.web.val.run host (HTTP 500) and on every response from
  Relay's val. Recorded because it is the signal an agent calling Relay actually receives; attributed to
  the platform because that is who sets it.
limits:
- scope: per-val, platform-enforced (Val Town edge); observed, not documented
  window: 60 seconds (x-ratelimit-reset counted down from 60)
  limit: 5000
  burst: null
  documented: false
  attribution: hosting platform (Val Town), not Relay
  source: 'x-ratelimit-limit: 5000 / x-ratelimit-remaining: 4999 / x-ratelimit-reset: 60 on 2026-09-19'
response_headers:
  observed:
  - X-RateLimit-Limit
  - X-RateLimit-Remaining
  - X-RateLimit-Reset
  checked_for:
  - RateLimit-Limit
  - RateLimit-Remaining
  - RateLimit-Reset
  - X-RateLimit-Limit
  - X-RateLimit-Remaining
  - X-RateLimit-Reset
  - Retry-After
  not_observed:
  - RateLimit-Limit
  - RateLimit-Remaining
  - RateLimit-Reset
  - Retry-After
exhaustion_status: null
exhaustion_note: Not observed and not documented; the limit was not exercised.
x-evidence:
  fetched: '2026-09-19'
  probes:
  - {url: 'https://relay2--5de8b3b2995311f1a5481607ee4eb77e.web.val.run/', status: 200, headers: 'x-ratelimit-limit: 5000; x-ratelimit-remaining: 4999; x-ratelimit-reset: 60'}
  - {url: 'https://relay2--5de8b3b2995311f1a5481607ee4eb77e.web.val.run/.well-known/agent-card.json', status: 200, headers: 'x-ratelimit-limit: 5000; x-ratelimit-remaining: 4992; x-ratelimit-reset: 57'}
  - {url: 'https://nonexistent-val-xyz123.web.val.run/', status: 500, headers: 'x-ratelimit-limit: 5000; x-ratelimit-remaining: 4993; x-ratelimit-reset: 59', note: 'platform-attribution control: the same headers on a host that is not Relay''s'}