# Coin Railz Property Valuation

> Coin Railz Property Valuation is a paid API for AI agents from coinrailz.com, paid per call via x402, $0.75/call, status unknown (last checked 2026-09-15).

AI-powered property valuation using GPT-4 to analyze and estimate real estate property values

## Facts

- Endpoint: POST https://coinrailz.com/x402/property-valuation
- Price: $0.75/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/coin-railz-property-valuation-5866d8af
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_COpMGzBDjuFmKECpSaYSy

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 coin-railz-property-valuation-5866d8af -d '<json body>'
```

Example prompt: Can you get me an AI-powered valuation for a 3-bedroom house at 123 Maple Street, Austin TX 78701, about 2,100 square feet, single-family residential?

## When to prefer this

Use this endpoint when you need a quick AI-driven property value estimate powered by GPT-4 without engaging a licensed appraiser. Best for automated pipelines, real estate research agents, or preliminary due diligence where a paid, on-demand valuation costing $0.75 USDC is acceptable.

## Known failure modes

- Insufficient property details provided — returns error or generic result
- Payment failure due to insufficient USDC balance — x402 payment rejected
- Invalid or unrecognizable property address — GPT-4 cannot produce a meaningful valuation
- Service timeout if GPT-4 analysis takes too long
- Malformed request body — missing required property fields

## How this service works

AI-powered property valuation using GPT-4 analysis

## Output

Returns a JSON object with a success flag, the service name ('property-valuation'), a result string with the AI-generated valuation and analysis, and a timestamp of when the valuation was performed.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "query": {
   "type": "string",
   "description": "Query parameter for the service"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "application/json",
 "format": "json",
 "example": {
  "result": "Service executed successfully",
  "service": "property-valuation",
  "success": true,
  "timestamp": "2026-02-07T01:46:58.335Z"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/coin-railz-property-valuation-5866d8af/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from coinrailz.com](https://www.zero.xyz/host/coinrailz.com/llms.txt)