generated: '2026-09-14'
method: searched
source: openapi/usacallerlookup-openapi.json (info.description + 429 response), llms/usacallerlookup-llms.txt
summary: >-
  A single global limit of 60 requests per minute per client IP applies across every
  endpoint. Exceeding it returns HTTP 429 with a Retry-After header. Responses also carry
  Cache-Control headers; the provider directs bulk consumers to the downloadable dataset
  rather than crawling the API.
limit_count: 1
rate_limits:
  - scope: per-ip
    window: 60s
    limit: 60
    burst: null
    status_on_exhaustion: 429
    response_headers:
      - Retry-After
      - RateLimit
      - Cache-Control
    error_body:
      error: rate_limited
      shape: '{ error, message, dataset }'
    remediation: >-
      Wait the number of seconds in Retry-After, cache responses (Cache-Control is sent),
      or download the full CC0 dataset for bulk access.