generated: '2026-09-18' method: searched source: https://documenter.getpostman.com/view/1524765/SzKWudFC checked: '2026-09-18' summary: >- ABG's own public Postman documentation for the Reservation APIs states verbatim: "Currently we do not have any rate limiting in place. This may change at our discretion." The developer-portal API Design Guide reserves HTTP 429 with reason "throttled" ("Rate limit exceeded") in its status-code mapping, and the OpenAPI declares no 429 response and no rate-limit headers on any operation. So: a documented 429 semantics with a documented zero enforcement — limit_count is an honest 0, not an unknown. limit_count: 0 limits: [] scopes: [] exhaustion: status: 429 reason: throttled docs: https://developer.avis.com/guides#_4xx-status-codes headers: [] headers_note: >- No X-RateLimit-*, RateLimit-* or Retry-After header is documented. Live unauthenticated probe of https://stage.abgapiservices.com/cars/locations/v2/keyword on 2026-09-18 (HTTP 401) returned only www-authenticate, cache-control, strict-transport-security and CloudFront headers — no rate-limit signal. probed: - url: https://documenter.getpostman.com/view/1524765/SzKWudFC status: 200 statement: Currently we do not have any rate limiting in place. This may change at our discretion. - url: https://developer.avis.com/guides status: 200 statement: '429 | Too Many Requests | throttled | Rate limit exceeded' - url: https://stage.abgapiservices.com/cars/locations/v2/keyword?keyword=Boston status: 401 rate_limit_headers_observed: [] agent_guidance: >- Treat 429 + reason "throttled" as the only signal and back off exponentially; there is no header to read a window from. Do not assume the absence of a documented limit is a licence to burst — the statement says the policy may change at ABG's discretion.