generated: '2026-09-13'
method: searched
source: https://developer.manheim.com/pages/apiUsage.html
docs: https://developer.manheim.com/pages/apiUsage.html
limit_count: 2
note: >-
  Published limits cover the Manheim hypermedia suite, applied per Mashery package key. The Kelley Blue
  Book portals (developer.kbb.com) publish no numeric limits; the Cox Automotive Integration Platform
  storefront publishes its per-product limits behind sign-in.
rate_limits:
- name: Queries per second
  scope: per-key
  window: 1s
  limit: 1000
  units: requests
  applies_to: Manheim hypermedia APIs (api.manheim.com)
  source: https://developer.manheim.com/pages/apiUsage.html
- name: Daily quota
  scope: per-key
  window: 1d
  limit: 2000000
  units: requests
  applies_to: Manheim hypermedia APIs (api.manheim.com)
  source: https://developer.manheim.com/pages/apiUsage.html
response_headers:
- header: X-Packagekey-Qps-Allotted
  meaning: Maximum QPS capacity set on the API key.
- header: X-Packagekey-Qps-Current
  meaning: Calls currently counted against the per-second limit.
- header: X-Packagekey-Quota-Allotted
  meaning: Maximum calls permitted per day.
- header: X-Packagekey-Quota-Current
  meaning: Calls made so far in the current day.
- header: X-Plan-Quota-Reset
  meaning: Timestamp at which the quota counter resets to zero.
header_note: >-
  The documentation names the headers with an X-Packagekey-/X-Plan-Quota-Reset prefix in its table, and
  its worked example shows the same values emitted as X-Plan-QPS-Allotted, X-Plan-QPS-Current,
  X-Plan-Quota-Allotted, X-Plan-Quota-Current and X-Plan-Quota-Reset. Both spellings are reproduced here
  verbatim from the provider; the discrepancy is theirs and was not resolved by an unauthenticated
  probe, because every Manheim endpoint requires a token.
exhaustion:
  status: 403
  standard_headers: false
  retry_after: not documented
  note: >-
    Mashery returns 403 with a developer message on quota/QPS exhaustion. Cox Automotive does not
    document RFC 9239 RateLimit-* headers or a Retry-After value.