auctions

Price-change history for one listing

Chronological source-price and public-price snapshots.

get/api/auction/{site_slug}/{auction_id}/price-history

Request

  • Base URL: https://api.thecarapi.com
  • URL: https://api.thecarapi.com/api/auction/{site_slug}/{auction_id}/price-history
  • Auth: one of:
    • API key in header X-API-Key
    • HTTP bearer
    • API key in query parameter api_key

Path parameters

site_slug'auto1' | 'openlane' | 'schadeautos' | 'copart' | 'ecarstrade' | 'encar' | 'kbchachacha' | 'japan' required

Implemented inventory sources. /api/sites returns deployed sources and counts visible to your key. Japan has stored detail only. European classifieds use separate endpoints.

Example:openlane

A source slug from /api/sites.

auction_idinteger required
Example:38112900

The integer database id of the auction.

Headers

If-None-Matchstring
Example:W/"6f1c0a9d8e"

Echo back the ETag from your last response for this URL. An unchanged page answers 304 Not Modified with no body. ETags are weak, so the tag stays valid whether or not the body came back compressed.

Response

The history.

successboolean required
contract_versionstring

Matches info.version of this document.

request_idstring

Also returned as the X-Request-ID header.

server_timestring date-time

UTC ISO-8601 timestamp of the response.

data_updated_atstring date-time

Route-supplied data timestamp, falling back to server_time. Not a guaranteed source refresh time; inspect listing observation timestamps and live_price.fetched_at where available.

site'auto1' | 'openlane' | 'schadeautos' | 'copart' | 'ecarstrade' | 'encar' | 'kbchachacha' | 'japan'

Implemented inventory sources. /api/sites returns deployed sources and counts visible to your key. Japan has stored detail only. European classifieds use separate endpoints.

auction_idinteger
source_auction_idstring nullable

For Auto1 this is the alphanumeric batch id; for other sources the numeric auction id as text.

Example response

{
  "success": true,
  "contract_version": "2026-09-03",
  "site": "openlane",
  "auction_id": 38112900,
  "history": [
    {
      "event_type": "price_change"
    }
  ]
}

Changes

No recorded changes to this operation across all 1 revision of this API.