generated: '2026-09-19'
method: probed
source: https://grokandmon.com/.well-known/x402-pricing.json
docs:
- https://grokandmon.com/.well-known/agent-card.json
limit_count: 1
summary: >-
  The only published limit is the free tier: 100 requests per day without payment, stated in both the agent
  card (x402.freeTier.requestsPerDay) and the pricing document, after which x402 payment "unlocks priority
  access". Its scope (per IP, per wallet, per agent) is not stated, nor is the status code on exhaustion.
  No rate-limit headers were returned on any response observed - tools/list on /mcp/v1 and the JSON-RPC
  probes on /a2a/v1 carried only CORS headers - and no 429 was seen. The oracle endpoints publish server-side
  cache TTLs (30-600 s), which bound how fresh a paid answer can be rather than how often it can be asked.
  The /api/* origin answered 530 with Retry-After: 120, which is a Cloudflare Tunnel outage signal, not a
  rate limit.
rate_limits:
- name: Free tier
  scope: unstated (per caller; the document does not say whether by IP, wallet or agent)
  limit: 100
  window: 1 day
  metric: request
  burst: null
  applies_to: [A2A JSON-RPC requests at https://grokandmon.com/a2a/v1, 'x402-priced REST endpoints under /api/x402/']
  on_exhaustion: unstated; x402 payment lifts it
  source: 'x402-pricing.json freeTier {requestsPerDay: 100, description: "Free tier: 100 requests/day without payment. x402 payment unlocks priority access."}'
headers:
  observed: []
  note: 'No X-RateLimit-*, RateLimit-* or Retry-After header on any 200 response; Retry-After: 120 appeared only on the 530 tunnel-error pages.'
cache_ttls:
- {endpoint: /api/x402/oracle, seconds: 300}
- {endpoint: /api/x402/grow-alpha, seconds: 180}
- {endpoint: /api/x402/daily-vibes, seconds: 600}
- {endpoint: /api/x402/sensor-snapshot, seconds: 30}