Auto.dev vs NHTSA vPIC: dealer listings with a free MCP or free VIN decoding, no key
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). NHTSA vPIC is a free US government API that decodes VINs and lists makes, models and manufacturers; it has no listings or prices.
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.
- NHTSA vPIC: Free, keyless VIN decoding to identify a vehicle's make, model, year and specs.
Side by side
| Auto.dev | NHTSA vPIC | |
|---|---|---|
| Searches | Active listings from US physical and online dealers, filtered by make, model, year, price, mileage, state, CPO status and ZIP plus distance. | VIN decoding (single, partial and batch of up to 50) and lookups of makes, models, manufacturers and vehicle types. |
| 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. | Decoded vehicle attributes as key-value pairs in JSON, XML or CSV. |
| Before the first call | An Auto.dev account and API key from the dashboard; the free plan needs only email verification, no card. | Nothing: no account, key or registration. |
| Free | Free plan with 1,000 API calls a month at 5 requests a second, no card required (listings capped at 20 per page). | Free for public use with no registration; the FAQ says there is no daily limit, though traffic is rate-controlled automatically. |
| 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. | Vehicles whose manufacturers report data to NHTSA (US market). |
| 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 NHTSA vPIC?
Nothing: no account, key or registration.
Is NHTSA vPIC free?
Free for public use with no registration; the FAQ says there is no daily limit, though traffic is rate-controlled automatically.
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”
NHTSA vPIC, read on October 15, 2026:
- vpic.nhtsa.dot.gov/api/home/index/faq: “the services provided on the API are free for use by the public”
- vpic.nhtsa.dot.gov/api/home/index/faq: “There is no need to register your application to use the services”
- vpic.nhtsa.dot.gov/api/home/index/faq: “No there is no limit to the amount of actions that can be run on the API per day”
- vpic.nhtsa.dot.gov/api: “controlled by an automated traffic rate control mechanism”
- vpic.nhtsa.dot.gov/api: “max 50 VINs per batch”
- vpic.nhtsa.dot.gov: “a consolidated platform that presents data collected within the manufacturer reported data”