--- title: "Developer Docs: Public Used Car Data API and MCP" description: "Read-only public API and MCP servers for Texas used-car data: NHTSA recalls and crash ratings, EPA MPG and size by model year, and guides. No key." canonical: https://texas.huntautogroup.com/developers/ last_updated: 2026-11-05 language: en --- # Developer Docs: Public Used Car Data API and MCP | HAG Texas Developers # Developer docs: public API and MCP Read-only access to the same public data the site shows: NHTSA recalls, complaints and crash ratings, EPA fuel economy and Transport Canada size by model year, and every published guide. Free, no account, no API key. **[Anthony Hunt](https://texas.huntautogroup.com/about/) ** Updated November 5, 20262 min read ![Developer Docs: Public Used Car Data API and MCP](https://texas.huntautogroup.com/assets/covers/compare.webp) ## Authentication None. Every endpoint is public and read-only. Please cache responses (they change at most once a day) and keep traffic reasonable. ## Endpoints Base URL: https://texas.huntautogroup.com/api/v1/. Full spec: openapi.json (OpenAPI 3.1). Catalog: /.well-known/api-catalog (RFC 9727). | Method | Path | What it returns | | --- | --- | --- | | GET | /api/v1/ | Index: endpoints, docs, OpenAPI and MCP links | | GET | /api/v1/models/ | Models with data. category (truck, suv, car, minivan), limit, cursor | | GET | /api/v1/models/{slug}/ | All years of one model: recalls, complaints, stars, EPA combined MPG | | GET | /api/v1/models/{slug}/years/{year}/ | One model year: NHTSA detail, EPA engines and MPG, Transport Canada size | | GET | /api/v1/guides/ | Guides. lang (en, es), category, q, limit, cursor | | GET | /api/v1/contact/ | How a person reaches Anthony. channel (email, whatsapp, form) | | POST | /api/v1/batch/ | Up to 20 GET paths in one request | **Want a personalized car guide?**Message Anthony on WhatsApp with your budget and what you need. Free, honest advice in English or Spanish. He doesn't sell cars.[WhatsApp](https://wa.me/15559374868?text=Hi%20Anthony%2C%20I%27d%20like%20a%20personalized%20car%20guide%20%28I%20read%3A%20Developer%20Docs%3A%20Public%20Used%20Car%20Data%20API%20and%20MCP%29.) ## Examples curl https://texas.huntautogroup.com/api/v1/models/?category=truck&limit=5curl https://texas.huntautogroup.com/api/v1/models/chevrolet-tahoe/years/2021/curl 'https://texas.huntautogroup.com/api/v1/guides/?lang=en&q=title'curl -X POST https://texas.huntautogroup.com/api/v1/batch/ -H "Content-Type: application/json" -d '{"requests":[{"id":"a","path":"/api/v1/models/toyota-tacoma/"}]}' ## Pagination List endpoints take limit (1 to 100, default 20) and return next_cursor. Pass it back as cursor until it is null. ## Errors Errors use RFC 9457 problem details (application/problem+json) with a stable code: not_found, model_not_found, year_not_found, invalid_slug, invalid_year, invalid_category, invalid_lang, invalid_limit, invalid_cursor, invalid_channel, invalid_batch, method_not_allowed, upstream_unavailable, internal_error. {"type": "https://texas.huntautogroup.com/developers/#errors", "title": "Model not found", "status": 404, "code": "model_not_found", "detail": "No model with slug ..."} ## Versioning The version is in the path (/api/v1/) and in the API-Version response header. Fields may be added to v1; nothing is removed or renamed without a new version. ## Deprecation policy Before a version is retired, its responses carry Deprecation (RFC 9745) and Sunset (RFC 8594) headers at least 6 months ahead, and the change is announced on this page. ## MCP servers Two stateless Streamable HTTP servers, read-only, no authentication. POST JSON-RPC 2.0 to the URL. | Server | URL | Tools | | --- | --- | --- | | Car data | https://texas.huntautogroup.com/api/mcp/ | list_models, get_model, get_model_year, list_guides, get_contact_options | | Docs | https://texas.huntautogroup.com/api/mcp/docs/ | search_docs, get_page | Listed in the official MCP Registry as com.huntautogroup.texas/data and com.huntautogroup.texas/docs: [registry entry](https://registry.modelcontextprotocol.io/v0/servers?search=com.huntautogroup.texas) . Server cards: /.well-known/mcp/server-card.json and /.well-known/mcp/docs-server-card.json. In-page tools for browser agents are registered with WebMCP on every page (/webmcp.js). curl -X POST https://texas.huntautogroup.com/api/mcp/ -H "Content-Type: application/json" -d '{"jsonrpc":"2.0","id":1,"method":"tools/list"}' ## Pages as Markdown Any page is available as Markdown: send Accept: text/markdown, add ?mode=agent, or fetch /index.md. Site index for agents: llms.txt. ## Data and limits Sources: NHTSA (api.nhtsa.gov), EPA fueleconomy.gov, Transport Canada via NHTSA vPIC. Owner complaints are unverified reports. A null value means the source has no record; nothing is estimated. There are no prices in this data. Educational content. Anthony does not sell, broker or arrange vehicle sales in Texas. Confirm fees and rules with the office named in each source before you pay anything. ## Want a personalized car guide? Message Anthony on WhatsApp with your budget and what you need. Free, honest advice in English or Spanish. He doesn't sell cars. [WhatsApp Anthony](https://wa.me/15559374868?text=Hi%20Anthony%2C%20I%27d%20like%20a%20personalized%20car%20guide%20%28I%20read%3A%20Developer%20Docs%3A%20Public%20Used%20Car%20Data%20API%20and%20MCP%29.) [Ask Anthony](https://texas.huntautogroup.com/contact/) ### Related articles ![Top 10 Used Cars for Uber Drivers in Austin](https://texas.huntautogroup.com/assets/covers/best-used-cars-for-uber-in-austin-640.webp) [Uber and rideshareTop 10 Used Cars for Uber Drivers in AustinTen used cars for Uber drivers in Austin, picked by Uber's vehicle rules, EPA MPG and NHTSA recall data, with the hybrid Anthony would buy and why.November 5, 2026](https://texas.huntautogroup.com/guides/best-used-cars-for-uber-in-austin/) ![Broke Down on I-35 Between Austin and San Antonio](https://texas.huntautogroup.com/assets/covers/broke-down-on-i-35-austin-san-antonio-640.webp) [OwnershipBroke Down on I-35 Between Austin and San AntonioWhat to do if your car breaks down on I-35 from Round Rock to San Antonio: the first two minutes, who to call, crash rules, summer heat and towing.November 5, 2026](https://texas.huntautogroup.com/guides/broke-down-on-i-35-austin-san-antonio/) ![Buying a Used Car From a Private Seller in Texas](https://texas.huntautogroup.com/assets/covers/buying-from-a-private-seller-in-texas-640.webp) [BuyingBuying a Used Car From a Private Seller in TexasHow to buy a used car from a private seller in Texas, from checking the title and VIN to signed paperwork, sales tax and the 30-day title deadline.November 5, 2026](https://texas.huntautogroup.com/guides/buying-from-a-private-seller-in-texas/) ![Anthony Hunt](https://texas.huntautogroup.com/assets/anthony-hunt-320.webp) ### Anthony Hunt Web developer and car enthusiast in Austin, Texas. Anthony has spent the last year and a half around used cars and auctions, digs into every rule and recall so you don't have to, and knows people across the car business. Need help choosing a car? Ask him, it's free. [anthonyhunts.com](https://anthonyhunts.com)