generated: '2026-09-04' method: probed source: https://api.groupon.com/ (response headers observed 2026-09-04) provider: Groupon providerId: groupon limit_count: 0 description: >- Groupon documents no API rate limits that a machine can read, and the live gateway advertises none. A full response-header capture from https://api.groupon.com/v2/deals.json on 2026-09-04 returned no X-RateLimit-*, no RateLimit-* (RFC 9331 style), no Retry-After and no quota header of any kind. The developer portal that might state limits in prose (www.groupon.com/developers/docs) answers HTTP 403 to every automated client behind a Cloudflare managed bot challenge, so it could not be read. An agent integrating with this API has no runtime throttling signal to act on. Recorded as an honest zero, not an omission. limits: [] headers: observed: [] requestId: x-request-id note: >- The gateway does return a request-correlation header (x-request-id, mirrored as x-original-request-id) usable for support escalation, plus x-brand: groupon and x-envoy-upstream-service-time. None of these is a rate-limit signal. responseCodes: throttled: null note: The 429 shape is unobserved; every anonymous request is short-circuited at 401. evidence: - url: https://api.groupon.com/v2/deals.json http_status: 401 fetched: '2026-09-04' note: Full header capture; no rate-limit header present. - url: https://www.groupon.com/developers/docs http_status: 403 fetched: '2026-09-04' note: 'Cloudflare managed bot challenge ("Just a moment..."); response header cf-mitigated: challenge.'