# Locus Assessment Position

> Locus Assessment Position is a paid API for AI agents from api.locus.report, paid per call via x402, $0.1/call, status unknown (last checked 2026-10-16).

Returns a property tax assessment's uniformity percentile among comparable same-roll properties, the state appeal deadline, and filing guidance — without suggesting a dollar value or recommending whether to appeal.

## Facts

- Endpoint: POST https://api.locus.report/api/locus-assessment-position?utm_source=zero.xyz
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/locus-assessment-position-e0b09dc1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_VVYfkNTOmYdTEY0VGPsry

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-assessment-position-e0b09dc1 -d '<json body>'
```

Example prompt: My property tax notice for 742 Evergreen Terrace, Springfield IL arrived on 2024-03-15 — can you show me where that assessment sits among similar properties on the same roll within 600 meters and tell me when the appeal deadline is and how to file?

## When to prefer this

Use this endpoint when a user wants to understand their property tax assessment's relative position among similar properties on the same roll, needs to know the appeal deadline based on a specific notice date, or wants filing guidance — without requiring a dollar appraisal or a value opinion. Prefer this over generic tax or appraisal APIs when jurisdictional appeal deadlines and same-roll uniformity percentile are the core need.

## Known failure modes

- Address not found or unrecognized — returns an error indicating the parcel could not be located
- No comparable properties found within the specified radius — may return null percentile or suggest widening radius
- Notice date or year out of supported range — validation error returned
- Address string too short (under 5 chars) or too long (over 200 chars) — schema validation failure
- Radius outside allowed range (100–1200 meters) — schema validation error
- State appeal rules unavailable for a given jurisdiction — partial response with available fields only

## How this service works

Where does my tax assessment sit among similar properties on the same roll, when is the appeal deadline, and how do I file. No dollar figure required. Reuses the same-roll assessment-uniformity percentile, the state appeal-deadline rule, and the local-or-state filing guide; Locus never creates or endorses a value and never recommends whether to appeal. npx @velinussage/locus-agent-skill add.

## Output

Returns the property's assessment uniformity percentile rank among comparable properties on the same tax roll within the specified radius, the state-specific appeal deadline derived from the notice date, and a local-or-state guide on how to file an appeal — without providing or endorsing a dollar valuation or a recommendation to appeal.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "address": {
   "type": "string",
   "maxLength": 200,
   "minLength": 5
  },
  "noticeDate": {
   "type": "string",
   "format": "date",
   "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))$"
  },
  "noticeYear": {
   "type": "integer",
   "maximum": 2100,
   "minimum": 2000
  },
  "radiusMeters": {
   "type": "integer",
   "maximum": 1200,
   "minimum": 100
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "kind": "assessment_position",
  "address": "1 E Edenton St, Raleigh, NC 27601",
  "caveats": [
   "example"
  ],
  "charged": true,
  "subject": {
   "jurisdiction": {}
  },
  "summary": "example",
  "uniformity": {
   "sampleSize": 0,
   "positionLabel": "example",
   "positionSummary": "example",
   "sampleTruncated": false,
   "positionInSample": "at_or_above_p75",
   "positionSampleSize": 0
  },
  "verifyNext": [
   {
    "url": "https://example.gov/record",
    "label": "example"
   }
  ],
  "generatedAt": "2026-01-15T00:00:00.000Z",
  "appealWindow": {}
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/locus-assessment-position-e0b09dc1/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)