generated: '2026-09-19'
method: searched
source: https://agents.muj428.com/openapi.json
docs:
- https://agents.muj428.com/developer.json
- https://agents.muj428.com/index.md
- https://agents.muj428.com/pricing.json
limit_count: 1
summary: >-
  MUJ428 publishes ONE quantified limit — the free Trust Reflex allocation of 1,000 qualifying decisions per stable
  caller_ref — and one unquantified one: POST /v1/rescue declares a 429 "Rate limited" response with no number,
  window or Retry-After. No requests-per-second ceiling is documented for any operation, no X-RateLimit-* /
  RateLimit-* headers are declared in the spec or were observed on live responses (headers seen: Supabase gateway
  metrics endpoint-load-metrics, sb-request-id, cf-ray; nothing rate-shaped). The runtime signal for the one real
  quota is economic rather than a header: the Trust Reflex 200 body carries payment_required=false while quota
  remains, and the same request returns HTTP 402 with a PAYMENT-REQUIRED header once it is exhausted.
rate_limits:
- name: Free Trust Reflex decisions per caller_ref
  scope: per-caller_ref (caller-chosen stable agent id)
  limit: 1000
  window: lifetime of the caller_ref (launch allocation; no reset period stated)
  metric: qualifying decision (unique caller_ref + action_ref; replays do not count)
  burst: null
  applies_to: ['POST /v1/trust (trustAction)', 'MCP tool trust_action', 'A2A skill trust-action']
  exhaustion_status: 402
  exhaustion_headers: [PAYMENT-REQUIRED]
  after_exhaustion: 0.01 USDC per decision via x402, only after explicit caller authorization; no automatic continuation
  source: 'OpenAPI /v1/trust description ("First 1,000 qualifying decisions per caller_ref are free. After quota, an unpaid request receives HTTP 402"); developer.json first_qualifying_decisions_free 1000, replay_same_caller_action_consumes_quota false'
undocumented:
- name: Rescue Beacon rate limit
  scope: unknown
  limit: null
  window: null
  applies_to: ['POST /v1/rescue (rescueAgentBeforeConsequence)', 'MCP tool rescue_agent_before_consequence']
  exhaustion_status: 429
  exhaustion_headers: []
  note: The only 429 declared in the spec; no number, window or Retry-After is published anywhere.
headers:
  request_id: X-Request-Id (exposed; sb-request-id also present on every response)
  rate_limit: none documented
  retry_after: none documented
  policy_epoch: X-MUJ428-Policy-Epoch (exposed; heartbeat policy_epoch 2026-08-30.1)
response_codes:
  quota_exhausted: 402
  throttled: 429