# Locus Three-Property Buyer Comparison

> Locus Three-Property Buyer Comparison is a paid API for AI agents from api.locus.report, paid per call via x402, $2.49/call, status unknown (last checked 2026-09-15).

Compares exactly three US addresses side-by-side using RentCast records, Locus environmental/contextual checks, and deterministic differences to support home buyer research.

## Facts

- Endpoint: POST https://api.locus.report/api/locus-three-property-buyer-comparison
- Price: $2.49/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/locus-three-property-buyer-comparison-63c39eec
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Gz6OFuSiRsgg2uhFm9jMP

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 locus-three-property-buyer-comparison-63c39eec -d '<json body>'
```

Example prompt: Can you compare these three homes I'm considering buying: 123 Maple St, Austin TX 78701; 456 Oak Ave, Austin TX 78702; and 789 Pine Rd, Austin TX 78703 — pull the property records, environmental checks, and show me the key differences?

## When to prefer this

Use this endpoint when a buyer or agent needs to compare exactly three US residential properties in a single structured call, combining property records with environmental and contextual signals. Prefer this over single-property lookups when the decision context is explicitly a three-way shortlist. Not suitable for single-address queries, bulk comparisons of more or fewer than three, or requests requiring valuations, predictions, or winner recommendations.

## Known failure modes

- Fewer or more than exactly three addresses supplied — validation error
- Address string does not match expected ZIP-containing pattern — schema validation failure
- 402 Payment Required returned before live data if payment is not attached — provider readiness check only, no reservation
- Addresses outside the US are not supported
- Malformed or ambiguous address strings may return empty or partial records

## How this service works

Compare exactly three US addresses. Returns non-PII RentCast records, bounded Locus checks, deterministic differences, work items, and validated nextCalls. The exact unpaid POST reports current provider readiness before a 402; it does not reserve capacity. Price includes up to nine Turnkey signatures. No winner, valuation, prediction, or recommendation. Private, no-store. npx @velinussage/locus-agent-skill add.

## Output

A structured JSON artifact containing: non-PII RentCast property records for each address, Locus bounded contextual check results, deterministic field-level differences between the three properties, actionable work items, validated nextCall suggestions, and provider readiness status. Includes caveats and generation timestamp. No winner, valuation, prediction, or recommendation is included.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "addresses": {
   "type": "array",
   "items": {
    "type": "string",
    "pattern": "(?:^|[\\s,])\\d{5}(?:-\\d{4})?\\s*$",
    "maxLength": 200,
    "minLength": 5
   },
   "maxItems": 3,
   "minItems": 3
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "id": "locus_example",
  "caveats": [
   "Example artifact; not live data."
  ],
  "records": [],
  "generatedAt": "2026-01-01T00:00:00.000Z"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/locus-three-property-buyer-comparison-63c39eec/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.locus.report](https://www.zero.xyz/host/api.locus.report/llms.txt)