# AutoPulse Vehicle Comparison

> AutoPulse Vehicle Comparison is a paid API for AI agents from autopulse-navy.vercel.app, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-15).

Compares 2–4 vehicles side-by-side on reliability, MPG, and total ownership cost to support a car purchase decision

## Facts

- Endpoint: GET https://autopulse-navy.vercel.app/api/auto/compare
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/autopulse-vehicle-comparison-d51cce26
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ATZgf5JctBLMPTCMble_h

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 autopulse-vehicle-comparison-d51cce26
```

Example prompt: Can you compare the 2023 Honda Civic, 2023 Toyota Corolla, and 2023 Mazda3 side by side on reliability, MPG, and total ownership cost so I can decide which one to buy?

## When to prefer this

Use this endpoint when a user needs to decide between 2–4 specific vehicles and wants a structured, multi-dimensional comparison covering reliability, fuel efficiency, and ownership cost in a single call. Prefer this over the standalone total-cost-of-ownership or reliability endpoints when the goal is a head-to-head purchase decision rather than deep analysis of a single vehicle.

## Known failure modes

- Unrecognized vehicle make/model/year returns an error or empty result
- Fewer than 2 or more than 4 vehicles specified causes a validation error
- Missing required vehicle parameters results in a 400 bad request
- Payment of 0.1 USDC not provided or declined causes a 402 Payment Required response
- Network timeout on upstream data source returns a 503 or partial result

## How this service works

Automotive intelligence API — 11 endpoints powered by NHTSA, EPA, and live market data. Safety recalls, reliability analysis, DIY repair guides, vehicle comparison, market value, EV break-even, dealer negotiation, pre-purchase inspection, parts pricing, total cost of ownership, and car-financing/APR intelligence. Global recall data (NHTSA, DVSA UK, Transport Canada, ACCC AU, RAPEX EU) and global financing coverage (US, UK, Germany, Canada, Australia, India). All endpoints require x402 payment (USDC on Base mainnet) via the PAYMENT-SIGNATURE header.

## Output

A structured side-by-side comparison of 2–4 vehicles covering reliability ratings, miles-per-gallon figures, and total ownership cost estimates, along with enough detail to settle a purchase decision between the listed vehicles.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "vehicles"
 ],
 "properties": {
  "lang": {
   "type": "string",
   "description": "lang"
  },
  "year": {
   "type": "integer",
   "description": "year"
  },
  "vehicles": {
   "type": "string",
   "description": "Comma-separated vehicles (e.g. Toyota RAV4,Honda CR-V,Mazda CX-5)"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {}
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/autopulse-vehicle-comparison-d51cce26/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from autopulse-navy.vercel.app](https://www.zero.xyz/host/autopulse-navy.vercel.app/llms.txt)