# Real Estate Market Comparison by Geography

> Real Estate Market Comparison by Geography is a paid API for AI agents from x402helper.xyz, paid per call via x402, $0.026/call, status unknown (last checked 2026-10-31).

Compares US real estate markets across multiple geographies using key metrics like price momentum, rental yield, and affordability ratios

## Facts

- Endpoint: GET https://x402helper.xyz/89e509/realestate/compare?utm_source=zero.xyz
- Price: $0.026/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-31
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/real-estate-market-comparison-by-geography-bd9f2b4e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_A7eUodQj3gW2qXBbWNvw9

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 real-estate-market-comparison-by-geography-bd9f2b4e
```

Example prompt: Compare the real estate markets in Austin TX, Phoenix AZ, and Nashville TN — rank them by price momentum year-over-year so I can see which market is appreciating fastest.

## When to prefer this

Use this endpoint when you need to compare multiple US real estate markets side-by-side on standardized metrics like price momentum, rental yield, or affordability ratios. It is ideal for investment screening, market selection, or affordability analysis across states, metros, counties, or ZIP codes. Prefer this over general web search when you need structured, quantitative, comparable data rather than narrative descriptions.

## Known failure modes

- Missing or invalid 'geo' parameter — at least two geographies required
- Unrecognized geography code (invalid FIPS, CBSA, or ZIP) returns error
- Invalid metric enum value causes bad request
- Payment failure via x402 micropayment (USDC) blocks access
- Rate limiting if too many calls in a short period

## How this service works

X402 micropayments server — AI agents pay USDC for OFAC screening, rates, and billing verification.

## Output

Returns a ranked JSON comparison of the requested geographies on the specified metric (defaulting to price_momentum_yoy), including values such as median home value, gross rental yield, price-to-income ratio, median gross rent, and median household income, with success status.

## 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",
     "required": [
      "geo"
     ],
     "properties": {
      "geo": {
       "type": "string",
       "default": null,
       "description": "Two or more geographies (states, metro CBSA codes, county FIPS or ZIPs), comma-separated"
      },
      "metric": {
       "enum": [
        "price_momentum_yoy",
        "gross_rental_yield",
        "price_to_income",
        "median_home_value",
        "median_gross_rent",
        "median_household_income"
       ],
       "type": "string",
       "default": null,
       "description": "The metric to rank on (default price_momentum_yoy)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "result": {},
  "success": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/real-estate-market-comparison-by-geography-bd9f2b4e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402helper.xyz](https://www.zero.xyz/host/x402helper.xyz/llms.txt)