# Polyform Vehicle Deal Check

> Polyform Vehicle Deal Check is a paid API for AI agents from polyform.polyform-org.workers.dev, paid per call via x402, $0.25/call, status unknown (last checked 2026-09-14).

Given a VIN, asking price, and mileage, returns decoded vehicle specs, open recall count, fuel-cost estimate, and a buy/caution/walk verdict with reasoning using public federal data.

## Facts

- Endpoint: GET https://polyform.polyform-org.workers.dev/v1/vehicle/deal-check
- Price: $0.25/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/polyform-vehicle-deal-check-6a331169
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_HjAx_wtEd1AlBt4a6vGyi

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 polyform-vehicle-deal-check-6a331169
```

Example prompt: Can you check if this used car is a good deal? The VIN is 1HGCM82633A004352, they're asking $14,500, and it has 87,000 miles on it — give me the specs, any open recalls, and whether I should buy it or walk away.

## When to prefer this

Choose this endpoint when a user wants a holistic go/no-go assessment of a specific used vehicle listing, not just raw VIN data or recall lookup in isolation. It combines NHTSA decode, recall count, and EPA fuel cost into a single actionable verdict — ideal for pre-purchase screening. Prefer this over individual NHTSA or EPA endpoints when you need a synthesized recommendation rather than raw data.

## Known failure modes

- Invalid or non-US-market VIN returns a decode error
- VIN not found in NHTSA database returns no specs
- Missing required parameters (vin, asking price, or miles) returns a 400-style error
- Upstream federal API outage may cause timeout or empty recall/fuel data
- Non-numeric asking price or mileage values may cause parsing failures

## How this service works

Given vin, asking price and miles: decoded specs, open recall count, fuel-cost estimate, and a buy/caution/walk verdict with reasoning. All public federal data.

## Output

Returns decoded vehicle specifications (make, model, year, trim, engine, etc.), count of open NHTSA safety recalls, EPA-based annual fuel cost estimate, and a structured verdict (buy / caution / walk) with human-readable reasoning based on price, mileage, recalls, and fuel costs.

## 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",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/polyform-vehicle-deal-check-6a331169/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from polyform.polyform-org.workers.dev](https://www.zero.xyz/host/polyform.polyform-org.workers.dev/llms.txt)