# Foundry VIN Declared Attribute Mismatch

> Foundry VIN Declared Attribute Mismatch is a paid API for AI agents from foundry-par007-machine-revenue-mainnet.inference-chip-index.workers.dev, paid per call via x402, $0.006/call, status unknown (last checked 2026-09-14).

Checks a VIN against NHTSA vPIC records and reports whether declared vehicle attributes (Make, Model, Year, etc.) match the official manufacturer-reported values.

## Facts

- Endpoint: POST https://foundry-par007-machine-revenue-mainnet.inference-chip-index.workers.dev/v2/official/vin-declared-attribute-mismatch
- Price: $0.006/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/foundry-vin-declared-attribute-mismatch-3fe46f63
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_1yU4X1g0FdvW8CadEEKnG

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 foundry-vin-declared-attribute-mismatch-3fe46f63 -d '<json body>'
```

Example prompt: Can you check whether the VIN 1HGCM82633A004352 actually matches a Honda Accord 2003 sedan with gasoline fuel type? I want to know if any of those declared attributes are mismatching according to official NHTSA records.

## When to prefer this

Use this endpoint when you need authoritative, evidence-backed verification that declared vehicle attributes (Make, Model, Year, Body Class, Fuel Type, Vehicle Type) match official NHTSA manufacturer records for a given VIN. Prefer this over generic VIN decoders when you need structured mismatch evidence with source provenance, freshness timestamps, and explicit limitations — especially for fraud detection, compliance auditing, or data quality workflows. Not suitable for ownership, title history, recall, or safety conclusions.

## Known failure modes

- Invalid VIN format (not 17 chars or contains I/O/Q) returns schema validation error
- VIN not found in NHTSA vPIC returns decode_clean=false with error codes, all comparisons become UNKNOWN
- NHTSA upstream service unavailable causes request failure
- Fuzzy matching not supported — exact case/Unicode normalization only, creative model name variants may show UNKNOWN
- Expected field array must have 1–6 items; empty or oversized arrays fail validation

## How this service works

Pay-per-request evidence and data tools: CSV validation and reconciliation, DNS/email configuration evidence, and bounded official weather, earthquake, vehicle, company and study records. Exact USDC prices, explicit JSON contracts and source provenance. No mailbox, ownership, medical or safety guarantees.

## Output

Returns a JSON object with per-field comparison results (MATCH, MISMATCH, or UNKNOWN) between the declared attributes and NHTSA vPIC decoded values, the raw normalized NHTSA record, source provenance (license, terms URL, attribution), freshness metadata (retrieval timestamp, cache age), and any limitations on the comparison (e.g. decode errors causing UNKNOWN status).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "vin": {
   "type": "string",
   "pattern": "^[A-HJ-NPR-Z0-9]{17}$"
  },
  "expected": {
   "type": "array",
   "items": {
    "type": "object",
    "required": [
     "field",
     "value"
    ],
    "properties": {
     "field": {
      "enum": [
       "Make",
       "Model",
       "ModelYear",
       "VehicleType",
       "BodyClass",
       "FuelTypePrimary"
      ],
      "type": "string"
     },
     "value": {
      "type": "string",
      "maxLength": 100,
      "minLength": 1
     }
    },
    "additionalProperties": false
   },
   "maxItems": 6,
   "minItems": 1
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "route": "vin-declared-attribute-mismatch",
  "result": {
   "vehicle": {
    "vin": "1HGCM82633A004352",
    "evidence": {
     "query": {
      "vin": "5UXWX7C5*BA0",
      "model_year": 2011
     },
     "source": "NHTSA vPIC",
     "freshness": {
      "state": "CURRENT_RETRIEVAL",
      "retrievedAt": "2026-09-06T00:00:00Z",
      "cacheAgeSeconds": 0,
      "maximumCacheSeconds": 0,
      "recordAgeIsNotRetrievalAge": true
     },
     "sourceUrl": "https://vpic.nhtsa.dot.gov",
     "observedAt": "2026-09-06T00:00:00Z",
     "provenance": {
      "license": "Public vPIC Open Data API; no licensing or registration requirement",
      "termsUrl": "https://vpic.nhtsa.dot.gov/api/Home/Index/FAQ",
      "truncated": false,
      "attribution": "NHTSA vPIC; manufacturer-reported vehicle attributes",
      "limitations": [
       "Synthetic example only; identifiers and null values illustrate fields, not a live observation."
      ],
      "modifications": "Selected factual fields, normalized names and bounded result count; no source ownership claimed.",
      "upstreamCalls": 1,
      "documentationUrl": "https://vpic.nhtsa.dot.gov/api/"
     },
     "sourceUpdatedAt": null,
     "normalizedResult": [
      {
       "VIN": null,
       "Make": null,
       "Model": null,
       "BodyClass": null,
       "ErrorCode": null,
       "ErrorText": null,
       "ModelYear": null,
       "VehicleType": null,
       "Manufacturer": null,
       "EngineCylinders": null,
       "FuelTypePrimary": null,
       "ElectrificationLevel": null
      }
     ],
     "sourceProcessedAt": null,
     "rawSourceIdentifiers": []
    },
    "decode_clean": false
   },
   "comparisons": [
    {
     "left": "HONDA",
     "field": "Make",
     "right": null,
     "status": "UNKNOWN"
    }
   ],
   "limitations": [
    "Manufacturer-reported NHTSA decode only; no ownership, title, history, recall, safety or identity conclusion.",
    "Nonzero or missing decode error codes make all attribute comparisons UNKNOWN; source errors are retained.",
    "Case, Unicode compatibility and whitespace normalization only. No fuzzy model matching.",
    "Synthetic example only."
   ],
   "observed_at": "2026-09-06T00:00:00Z"
  },
  "observed_at": "2026-09-06T00:00:00Z"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/foundry-vin-declared-attribute-mismatch-3fe46f63/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from foundry-par007-machine-revenue-mainnet.inference-chip-index.workers.dev](https://www.zero.xyz/host/foundry-par007-machine-revenue-mainnet.inference-chip-index.workers.dev/llms.txt)