# CarMax Used Car Listings by Make/Model

> CarMax Used Car Listings by Make/Model is a paid API for AI agents from api.healthtravel-api.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-29).

Returns paginated CarMax used car listings for a given make (and optional model), including stock details, pricing, mileage, store location, and vehicle highlights scraped from carmax.com.

## Facts

- Endpoint: GET https://api.healthtravel-api.workers.dev/api/travel/carmax?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/carmax-used-car-listings-by-make-model-4fcbc9b1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_wLaAVchPE_rsfaf9023Yr

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability carmax-used-car-listings-by-make-model-4fcbc9b1
```

Example prompt: Can you pull up all the used Toyota Camrys listed on CarMax right now, including their prices, mileage, and which stores have them?

## When to prefer this

Use this endpoint when you need structured CarMax used car inventory data by make or make+model, including pricing history (price drops), store locations, and vehicle highlights. Prefer this over general automotive search APIs when the user specifically wants CarMax inventory with CarMax-specific metadata like stock numbers and store details.

## Known failure modes

- Missing required 'make' parameter returns a validation error
- Invalid or misspelled make/model may return zero results
- CarMax website changes or blocks may cause scraping failures or empty responses
- Residential proxy downtime may result in timeouts or HTTP errors
- Pagination beyond available results returns empty listing arrays

## How this service works

CarMax used cars for a make (and optional model): stock number, VIN, year, make, model, trim, body, price, original price and price-drop flag, mileage, colors, drivetrain, engine, MPG, store name/city/state, highlights (single owner, warranty...), date listed and link; about 20-24 per page, plus the nationwide total. From carmax.com's public search pages via a residential proxy.

## Output

Returns a list of approximately 20-24 used car listings per page from CarMax, each containing stock number, VIN, year, make, model, trim, body type, current price, original price, price-drop indicator, mileage, exterior/interior colors, drivetrain, engine specs, MPG, store name/city/state, vehicle highlights (e.g. single owner, warranty), date listed, and a direct link to the listing. Also includes the nationwide total count of matching vehicles.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "make"
     ],
     "properties": {
      "make": {
       "type": "string",
       "description": "Car make, e.g. toyota, ford, tesla"
      },
      "model": {
       "type": "string",
       "description": "Optional model, e.g. camry, f-150, model-3"
      }
     }
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/carmax-used-car-listings-by-make-model-4fcbc9b1/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.healthtravel-api.workers.dev](https://www.zero.xyz/host/api.healthtravel-api.workers.dev/llms.txt)