Developer documentation
Collector car API reference.Query the collector car market like a structured archive.
Actual hammer prices, normalized across auction platforms.Build with actual hammer prices from completed classic car auctions, active BaT beta listings, and bid history, delivered through one REST API and MCP server.
Base URL
https://api.oldcarsdata.com
275k+
completed sales
BaT
live auctions beta
7
auction sources
Quick start
First useful query in three moves.
Create an account
Start with a free API key from your account dashboard.
Query sales or live inventory
Filter completed results or BaT live auction beta listings by make, model, year, source, and more.
Connect an agent
Use the MCP server to give Claude, Cursor, or ChatGPT direct access to the same market data.
Reference map
Pick the surface you need.
Overview
High-level API overview, auth pattern, and integration path.
Getting Started
Endpoint details, request examples, and response shape.
MCP Server
Connect history, live listings, bid history, and stats directly to AI tools.
Get Auctions
Endpoint details, request examples, and response shape.
Get Live Auctions (Beta)
Beta live auction feed for Bring a Trailer listings, ending windows, and polling filters.
Get Auction Bids (Beta)
Endpoint details, request examples, and response shape.
Get Stats
Endpoint details, request examples, and response shape.
Get Makes
Endpoint details, request examples, and response shape.
Get Models
Endpoint details, request examples, and response shape.
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