# Frontera Signal Parcel Lookup

> Frontera Signal Parcel Lookup is a paid API for AI agents from fronterasignal.com, paid per call via x402, $0.04/call, status unknown (last checked 2026-10-10).

Returns live county parcel records for a given street address in Hidalgo County, Texas, including ownership, assessed values, flood zone, building details, and deed history.

## Facts

- Endpoint: GET https://fronterasignal.com/api/v1/parcel?utm_source=zero.xyz
- Price: $0.04/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-10
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/frontera-signal-parcel-lookup-02a25c30
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_sfx49TOfDWMTPe1KlM_Vh

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 frontera-signal-parcel-lookup-02a25c30
```

Example prompt: Pull up the county parcel record for 800 S 10th St in McAllen — I need the owner, assessed value, building size, and flood zone status.

## When to prefer this

Use this endpoint when you need authoritative county appraisal district parcel data for a specific street address in Hidalgo County, Texas (McAllen, Edinburg, Mission, Pharr, Weslaco, etc.). It is ideal for real estate due diligence, ownership lookups, valuation research, or flood risk checks in the Rio Grande Valley area. Prefer this over generic property data APIs when you specifically need Texas county appraisal records with flood zone context and construction-research-grade freshness.

## Known failure modes

- Address not found in Hidalgo County parcel records — returns no parcels or empty match
- City outside Hidalgo County supplied — returns a 400 error (free, not charged)
- Address is ambiguous or lacks a house number — may return zero or multiple parcels
- Flood zone returned as null if Hidalgo County has no digital FIRM for the parcel location
- Stale data if county records haven't been updated recently (age_days may be high)
- Suite or unit number causes no additional filtering — ignored by design

## How this service works

Use when you have a Hidalgo County, Texas street address and need its parcel record before an offer, a loan or a site visit: parcel id, property class, acres, year built, building size, last deed, values, taxing units and the owner if it is a company or public body (people are withheld). /api/v1/parcel/match checks for free first; a miss is a 404 and is not charged. Example: "What is the parcel id, building size and market value of 800 S 10th St, McAllen?"

## Output

A JSON object containing matched parcel records for the queried address, including owner name, situs address, parcel ID, land acres, building square footage, year built, property class, assessed/market/land/improvement values, deed type, last deed date, legal description, exemptions, taxing units, flood zone status with meaning, geocoordinates (lat/lon), data freshness fields (as_of, age_days, cadence), and publisher metadata.

## 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": [
      "address",
      "city"
     ],
     "properties": {
      "city": {
       "type": "string",
       "description": "A Hidalgo County city or town on the address, e.g. McAllen, Edinburg, Mission, Pharr, Weslaco. Other counties get a free 400."
      },
      "address": {
       "type": "string",
       "description": "Street address with house number, e.g. 800 S 10th St. A suite or unit is ignored."
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "note": {
       "type": "string"
      },
      "as_of": {
       "type": "string"
      },
      "flood": {
       "type": "object",
       "properties": {
        "zone": {
         "type": "null"
        },
        "source": {
         "type": "string"
        },
        "status": {
         "type": "string"
        },
        "checked": {
         "type": "string"
        },
        "meaning": {
         "type": "string"
        }
       }
      },
      "point": {
       "type": "object",
       "properties": {
        "lat": {
         "type": "number"
        },
        "lon": {
         "type": "number"
        }
       }
      },
      "query": {
       "type": "object",
       "properties": {
        "city": {
         "type": "string"
        },
        "address": {
         "type": "string"
        }
       }
      },
      "county": {
       "type": "string"
      },
      "source": {
       "type": "string"
      },
      "cadence": {
       "type": "string"
      },
      "dataset": {
       "type": "string"
      },
      "parcels": {
       "type": "array",
       "items": {
        "type": "object",
        "properties": {
         "owner": {
          "type": "string"
         },
         "situs": {
          "type": "string"
         },
         "map_id": {
          "type": "string"
         },
         "values": {
          "type": "object"
      
… (truncated)
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "note": "Read from the county parcel records at the time of the call. as_of is the date those records were last updated. Several…",
  "as_of": "2026-02-11",
  "flood": {
   "zone": null,
   "source": "public flood map",
   "status": "no_digital_firm",
   "checked": "2026-10-03",
   "meaning": "Hidalgo County has no digital flood insurance rate map, so the public flood map has no zone to read for this parcel. Th…"
  },
  "point": {
   "lat": 26.195754,
   "lon": -98.232595
  },
  "query": {
   "city": "McAllen",
   "address": "800 S 10th St"
  },
  "county": "Hidalgo County, Texas",
  "source": "county parcel records",
  "cadence": "read live per call",
  "dataset": "parcel",
  "parcels": [
   {
    "owner": "WRI JACKSON WEST LP",
    "situs": "800 S 10TH ST, MCALLEN TX",
    "map_id": "H2550-00-007-0001-26",
    "values": {
     "note": "The latest values in the county parcel records as of as_of. The tax year they belong to is not confirmed, so check the …",
     "as_of": "2026-02-11",
     "tax_year": null,
     "land_value_usd": 2150008,
     "market_value_usd": 3223000,
     "assessed_value_usd": 3223000,
     "appraised_value_usd": 3223000,
     "improvement_value_usd": 1072992
    },
    "deed_type": "CORP-ADMT",
    "parcel_id": "189432",
    "exemptions": [],
    "land_acres": 2.9555,
    "validation": "full",
    "year_built": 1982,
    "taxing_units": [
     "CAD"
    ],
    "building_sqft": 35000,
    "last_deed_date": "2004-03-29",
    "property_class": "F1",
    "legal_description": "HIDALGO CANAL CO-MC N 1/2 LOT 1 EXC NEC 125 X 150 NW 1/4 BLK 7 2.99 AC NET",
    "property_class_label": "commercial real property"
   }
  ],
  "age_days": 234,
  "publisher": "Frontera Signal",
  "disclaimer": "Every value carries as_of, age_days, cadence and stale (weekly measures go stale after 14 days, monthly measures after …",
  "matched_by": "situs_address",
  "match_count": 1
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/frontera-signal-parcel-lookup-02a25c30/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from fronterasignal.com](https://www.zero.xyz/host/fronterasignal.com/llms.txt)