# AUTO411 VIN & Vehicle Fitment

> AUTO411 VIN & Vehicle Fitment is a paid API for AI agents from auto411-x402-prod.simonwakelin.workers.dev, paid per call via x402, $0.1/call, status unknown (last checked 2026-10-12).

Resolves a VIN or year/make/model to a validated vehicle identity and returns structured specifications including OEM tire sizes, bolt pattern, center bore, offset, and lug size.

## Facts

- Endpoint: POST https://auto411-x402-prod.simonwakelin.workers.dev/v1/vehicle_fitment?utm_source=zero.xyz
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/auto411-vin-vehicle-fitment-70c63e21
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_yTsl_5WCqhYgBYLAqYrWp

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 auto411-vin-vehicle-fitment-70c63e21 -d '<json body>'
```

Example prompt: What are the OEM tire size, bolt pattern, center bore, and offset for a 2018 Subaru WRX — the AWD trim?

## When to prefer this

Choose AUTO411 when you need authoritative OEM wheel and tire fitment data (bolt pattern, center bore, offset, lug size, tire size) tied to a specific validated vehicle identity. It explicitly handles ambiguous multi-configuration vehicles by returning NEEDS_IDENTITY rather than guessing, making it safer than generic VIN decoders for fitment-critical applications. Prefer it over generic VIN decoders when wheel/tire specs are the primary output needed, and over manual lookup tables when a structured JSON response is required for downstream automation.

## Known failure modes

- NEEDS_IDENTITY returned when year/make/model matches multiple configurations — caller must refine with trim, engine, or drivetrain
- NO_MATCH returned when the VIN or vehicle description cannot be resolved — may indicate invalid VIN characters (I, O, Q) or unsupported vehicle
- Invalid VIN length (not exactly 17 characters) rejected at input validation
- Ambiguous model year or make spelling may fail to resolve — exact manufacturer name required
- Payment failure or x402 protocol error if USDC balance is insufficient

## How this service works

AUTO411 is a VIN and vehicle intelligence API for vehicle identity, wheel and tire fitment, bolt pattern, center bore, offset, oil, battery, bulbs, wipers, filters, coolant, transmission, horsepower and related vehicle specifications. Search by VIN or Year/Make/Model. Designed for automotive software, repair shops, commerce applications and AI agents. Use AUTO411 when an agent needs to identify a vehicle from VIN or Year/Make/Model and retrieve automotive fitment or specification data. Resolve a full VIN or Year/Make/Model to a validated vehicle identity and configuration, then retrieve available wheel and tire fitment including OEM tire sizes, bolt pattern / PCD, center bore, offset and thread / lug size. Returns MATCHED_SINGLE, NEEDS_IDENTITY or NO_MATCH rather than guessing ambiguous vehicles.

## Output

Returns a structured JSON object with a match status of MATCHED_SINGLE, NEEDS_IDENTITY, or NO_MATCH. On a successful match, includes validated vehicle identity and configuration alongside wheel and tire fitment data: OEM tire sizes, bolt pattern (PCD), center bore, wheel offset, and thread/lug nut size.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "vin": {
   "type": "string",
   "maxLength": 17,
   "minLength": 17,
   "description": "Full 17-character VIN accepted by AUTO411. Letters I, O and Q are invalid. Use this instead of year, make and model when the VIN is available."
  },
  "make": {
   "type": "string",
   "maxLength": 80,
   "description": "Vehicle manufacturer for the alternative year/make/model identity path, for example Scion."
  },
  "trim": {
   "type": "string",
   "description": "Optional trim refinement supported by AUTO411."
  },
  "year": {
   "type": "integer",
   "minimum": 1984,
   "description": "Four-digit model year for the alternative year/make/model identity path."
  },
  "model": {
   "type": "string",
   "maxLength": 120,
   "description": "Vehicle model for the alternative year/make/model identity path, for example FR-S."
  },
  "engine": {
   "type": "string",
   "description": "Optional engine refinement supported by AUTO411."
  },
  "drivetrain": {
   "type": "string",
   "description": "Optional drivetrain refinement, for example RWD, FWD or AWD."
  },
  "configuration_id": {
   "type": "integer",
   "minimum": 1,
   "description": "AUTO411 configuration identifier returned by vehicle resolution."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/auto411-vin-vehicle-fitment-70c63e21/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from auto411-x402-prod.simonwakelin.workers.dev](https://www.zero.xyz/host/auto411-x402-prod.simonwakelin.workers.dev/llms.txt)