Auto.dev vs eBay Browse API (vehicles) for AI agents
Auto.dev is a REST API for active vehicle listings from US dealers, part of a wider set of automotive APIs (VIN decode, photos, specs, recalls, payments). eBay Browse API (vehicles) is eBay's Buy API for searching and reading eBay listings by keyword and category; the docs read today cover vehicle parts fitment but do not show a vehicle-specific listings guide.
The short answer
- Auto.dev: Getting a small project or AI agent searching US dealer listings quickly, with a free tier and a ready-made MCP server.
- eBay Browse API (vehicles): Approved eBay partners who want eBay listings, including Motors, in their own app.
Side by side
| Auto.dev | eBay Browse API (vehicles) | |
|---|---|---|
| Searches | Active listings from US physical and online dealers, filtered by make, model, year, price, mileage, state, CPO status and ZIP plus distance. | eBay listings by keyword and category, with compatibility checks for parts against cars, trucks and motorcycles. |
| Returns | Listing records with VIN, year, make, price, location and created/updated dates; the full field schema was collapsed in the public docs, so dealer contact fields could not be confirmed. | A subset of item details per search match, with full details from getItem. |
| Before the first call | An Auto.dev account and API key from the dashboard; the free plan needs only email verification, no card. | An eBay developer account and app keys; production use of Buy APIs requires applying through the eBay Partner Network, a business-model review and signed contracts with eBay. |
| Free | Free plan with 1,000 API calls a month at 5 requests a second, no card required (listings capped at 20 per page). | Not stated on its pages |
| Paid | Growth plan $299 a month; Scale plan $599 a month. | Not stated on its pages |
| Limits on keeping or showing results | Data is licensed solely for internal business purposes; no reselling or redistributing to third parties and no derivative databases or competing data products. No clause specifically on caching. | Not stated on its pages |
| Coverage | United States dealers. | eBay marketplaces; vehicle compatibility attributes documented for the US marketplace. |
| MCP server | Official MCP server at https://mcp.auto.dev/mcp (OAuth sign-in or API key); listing search tool available on the free plan. | No official server listed |
Where Openpath fits
Openpath has no car listings yet. Cars are on its roadmap, from sellers and dealers who list them themselves. Get listed.
Questions people ask
What do I need before I can use Auto.dev?
An Auto.dev account and API key from the dashboard; the free plan needs only email verification, no card.
Is Auto.dev free?
Free plan with 1,000 API calls a month at 5 requests a second, no card required (listings capped at 20 per page).
What do I need before I can use eBay Browse API (vehicles)?
An eBay developer account and app keys; production use of Buy APIs requires applying through the eBay Partner Network, a business-model review and signed contracts with eBay.
Is eBay Browse API (vehicles) free?
Its pages listed no free use when we read them on October 15, 2026.
Sources
Every line about another company comes from its own pages. Prices and terms change, so check the source before you rely on one.
Auto.dev, read on October 15, 2026:
- docs.auto.dev/v2/getting-started: “1,000 API calls per month, no card required”
- docs.auto.dev/v2/getting-started: “$299/month with unlimited calls”
- docs.auto.dev/v2/getting-started: “$599/month with enterprise features”
- docs.auto.dev/v2/getting-started: “Free needs no checkout — verify your email address and your API key is ready.”
- docs.auto.dev/v2/products/vehicle-listings: “Get comprehensive vehicle listings from U.S. physical & online dealers in seconds.”
- docs.auto.dev/v2/products/vehicle-listings: “filter by make, model, year, price, mileage, and more”
- docs.auto.dev/v2/mcp-quickstart: “claude mcp add --transport http auto-dev https://mcp.auto.dev/mcp”
- auto.dev/terms: “You receive a limited, non-exclusive license to use Automotive Data solely for your internal business purposes”
- auto.dev/terms: “You may not create derivative databases or competing data products”
- auto.dev/terms: “Resell, redistribute, or sublicense our Automotive Data to third parties”
- auto.dev/pricing: “Free $0 per month Get 1,000 API calls per month for evaluation and small projects”
eBay Browse API (vehicles), read on October 15, 2026:
- developer.ebay.com/api-docs/buy/static/api-browse.html: “Using the Browse API, you can create a rich selection of items for your buyers to browse with keyword and category searches.”
- developer.ebay.com/api-docs/buy/static/api-browse.html: “The only products supported are cars, trucks, and motorcycles.”
- developer.ebay.com/api-docs/buy/static/api-browse.html: “a subset of the item details is returned”
- developer.ebay.com/api-docs/buy/static/buy-requirements.html: “The use of eBay's Buy APIs in production is intended for eBay partners only.”
- developer.ebay.com/api-docs/buy/static/buy-requirements.html: “You must apply for production access through the eBay Partner Network.”
- developer.ebay.com/api-docs/buy/static/buy-requirements.html: “There is no guarantee that your application for production use of the APIs will be approved.”