77trust / 100

Projects

by Frontera Signal in Other

x402 APIPassing, checked 4 h ago

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?"

GET
https://fronterasignal.com/api/v1/projects
Price
$0.03
per call in USDC
Uptime
100%
last 30 days
Response time
573 ms
833 ms slowest 5%
Last check
Passed
4 h ago, next any minute now

Run a free test callHow to call it

Reliability

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Status and outage history · Atom feed

How to call it

GET https://fronterasignal.com/api/v1/projects

Each call costs $0.03 in USDC on Base, paid with the request over x402.

Run a free test callOne unpaid request, the way an agent sends it. You see the payment challenge it gets back. Nothing is charged.

Example request

From the listing.

GET https://fronterasignal.com/api/v1/projects?city=McAllen&limit=5

Parameters

ParameterTypeRequiredDescription
citystringNoA Valley city with filed projects.
countystringNoHidalgo, Cameron, Starr or Willacy ("Hidalgo County" also works). One of: Hidalgo, Cameron, Starr, Willacy.
limitintegerNoHow many projects to return, 1-100.
min_costnumberNoMinimum filed cost in US dollars; projects with no cost filed are left out.
ownerstringNoPart of the owner name, case-insensitive.
sincestringNoRegistered on or after this date, YYYY-MM-DD.

Example response

The provider's example. We can't check it without paying.

Example response, 47 lines
{
  "as_of": "2026-10-04",
  "cadence": "weekly",
  "coverage": {
    "counties": [
      "Cameron",
      "Hidalgo",
      "Starr",
      "Willacy"
    ],
    "registered_since": "2024-10-01"
  },
  "dataset": "projects",
  "disclaimer": "Every value carries as_of, age_days, cadence and stale (weekly measures go stale after 14 days, monthly measures after …",
  "matched": 314,
  "note": "Newest filing first. Estimated cost, square feet and dates are what the owner filed with the state; null = not filed. m…",
  "projects": [
    {
      "address": "212 LINDBERG BUILDING A UNIT 1",
      "city": "McAllen",
      "county": "Hidalgo",
      "design_firm": "G.D. DRAFTING & DESIGNS",
      "estimated_cost_usd": 165980,
      "estimated_end": "2027-02-26",
      "estimated_start": "2026-10-19",
      "facility": "LINDBERG CENTER CONDOMINIUMS",
      "funding": "private",
      "id": "FSP-806786d275",
      "name": "GOMEZ CARDIOVASCULAR CLINIC",
      "owner": "VELOCITY TRIPLE J",
      "registered": "2026-10-01",
      "scope_of_work": "Renovation of commercial unit",
      "source": "public state construction filing",
      "square_feet": 3192,
      "status": "Review Complete",
      "type_of_work": "Renovation/Alteration",
      "zip": "78501"
    }
  ],
  "publisher": "Frontera Signal",
  "query": {
    "city": "McAllen",
    "limit": 5
  },
  "returned": 5,
  "source": "public state construction filing"
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.03.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://fronterasignal.com/api/v1/projects?city=McAllen&limit=5'

# x402 v2 sends the challenge base64-encoded in the PAYMENT-REQUIRED header (v1 sends it in the body).
# To read the header:
curl -sS -g -o /dev/null -D - 'https://fronterasignal.com/api/v1/projects?city=McAllen&limit=5' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode
JavaScript: pay and call
// npm i @x402/fetch @x402/evm viem
import { wrapFetchWithPayment, x402Client } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

// Pays at most $0.03 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.03" });
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? ToolVet checks it first for $0.005. Pay for that from a separate
// client: this one is capped at $0.03 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Ffronterasignal.com%2Fapi%2Fv1%2Fprojects
const res = await pay("https://fronterasignal.com/api/v1/projects?city=McAllen&limit=5");
console.log(res.status, await res.text());
Python: pay and call
# pip install "x402[requests,evm]"
import os
from eth_account import Account
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client

# Pays at most $0.03 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.03"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://fronterasignal.com/api/v1/projects?city=McAllen&limit=5")
    print(res.status_code, res.text)

Security scan

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