# Frontera Signal Projects API

> Frontera Signal Projects API is a paid API for AI agents from fronterasignal.com, paid per call via x402, $0.03/call, status unknown (last checked 2026-10-10).

Returns paginated public construction project filings for Hidalgo, Cameron, Starr, and Willacy counties in the Rio Grande Valley, filterable by county, city, owner, date, and minimum cost.

## Facts

- Endpoint: GET https://fronterasignal.com/api/v1/projects?utm_source=zero.xyz
- Price: $0.03/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-projects-api-dfc69249
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_IONJQedzdhPoH4LUjVj8b

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-projects-api-dfc69249
```

Example prompt: Pull the 10 most recent construction projects filed in Hidalgo County since January 1, 2026 with an estimated cost of at least $100,000 — I want to see who's building what and where.

## When to prefer this

Use this endpoint when you need structured, filterable construction project data specifically for the Rio Grande Valley counties of Hidalgo, Cameron, Starr, or Willacy in Texas. It is ideal for tracking regional development activity, monitoring specific owners or developers, or surfacing high-value construction opportunities by cost threshold. Prefer it over general permit databases when you need weekly-refreshed, bilingual coverage of this specific border region.

## Known failure modes

- Invalid county enum value returns validation error
- Date format not matching YYYY-MM-DD causes query rejection
- Limit outside 1-100 range may be rejected or clamped
- No projects matching filters returns empty projects array with matched=0
- Stale data warning if weekly dataset has not been refreshed within 14 days

## How this service works

Use to find who is about to build what in the Rio Grande Valley, Texas (Hidalgo, Cameron, Starr, Willacy counties): commercial projects over $50,000 filed with the state before construction, with owner, design firm, estimated cost, square feet and dates. For suppliers, subcontractors, lenders and brokers chasing new work. Filter by city, county, since, min_cost or owner. Example: "What commercial projects were registered in Hidalgo County since Sept 1, who owns them and how big are they?"

## Output

A JSON object containing matched project count, query echo, dataset metadata (cadence, coverage, as-of date), and an array of project records each with ID, name, owner, address, city, ZIP, county, type of work, scope of work, estimated cost in USD, square footage, start/end dates, status, design firm, funding type, and facility name.

## 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",
     "properties": {
      "city": {
       "type": "string",
       "description": "A Valley city with filed projects."
      },
      "limit": {
       "type": "integer",
       "description": "How many projects to return, 1-100."
      },
      "owner": {
       "type": "string",
       "description": "Part of the owner name, case-insensitive."
      },
      "since": {
       "type": "string",
       "description": "Registered on or after this date, YYYY-MM-DD."
      },
      "county": {
       "enum": [
        "Hidalgo",
        "Cameron",
        "Starr",
        "Willacy"
       ],
       "type": "string",
       "description": "Hidalgo, Cameron, Starr or Willacy (\"Hidalgo County\" also works)."
      },
      "min_cost": {
       "type": "number",
       "description": "Minimum filed cost in US dollars; projects with no cost filed are left out."
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "note": {
       "type": "string"
      },
      "as_of": {
       "type": "string"
      },
      "query": {
       "type": "object",
       "properties": {
        "city": {
         "type": "string"
        },
        "limit": {
         "type": "integer"
        },
        "county": {
         "type": "string"
        }
       }
      },
      "source": {
       "type": "string"
      },
      "cadence": {
       "type": "string"
      },
      "dataset": {
       "type": "string"
      },
      "matched": {
       "type": "integer"
      },
      "coverage": {
       "type": "object",
       "properties": {
        "counties": {
         "type": "array",
         "items": {
          "type": "string"
         }
        },
        "registered_since": {
         "type": "string"
        }
       }
      },
      "projects": {
       "type": "array",
       "items": {
        "type": "object",
        "properties": {
         "id": {
 
… (truncated)
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "note": "Newest filing first. Estimated cost, square feet and dates are what the owner filed with the state; null = not filed. m…",
  "as_of": "2026-10-03",
  "query": {
   "city": "McAllen",
   "limit": 5
  },
  "source": "public state construction filing",
  "cadence": "weekly",
  "dataset": "projects",
  "matched": 314,
  "coverage": {
   "counties": [
    "Cameron",
    "Hidalgo",
    "Starr",
    "Willacy"
   ],
   "registered_since": "2024-10-01"
  },
  "projects": [
   {
    "id": "FSP-806786d275",
    "zip": "78501",
    "city": "McAllen",
    "name": "GOMEZ CARDIOVASCULAR CLINIC",
    "owner": "VELOCITY TRIPLE J",
    "county": "Hidalgo",
    "source": "public state construction filing",
    "status": "Review Complete",
    "address": "212 LINDBERG BUILDING A UNIT 1",
    "funding": "private",
    "facility": "LINDBERG CENTER CONDOMINIUMS",
    "registered": "2026-10-01",
    "design_firm": "G.D. DRAFTING & DESIGNS",
    "square_feet": 3192,
    "type_of_work": "Renovation/Alteration",
    "estimated_end": "2027-02-26",
    "scope_of_work": "Renovation of commercial unit",
    "estimated_start": "2026-10-19",
    "estimated_cost_usd": 165980
   }
  ],
  "returned": 5,
  "publisher": "Frontera Signal",
  "disclaimer": "Every value carries as_of, age_days, cadence and stale (weekly measures go stale after 14 days, monthly measures after …"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/frontera-signal-projects-api-dfc69249/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)