77trust / 100

Companies

by Frontera Signal in Company & people data

x402 APIPassing, checked 22 min ago

Use to vet a developer, owner, architecture firm or trade contractor in the Rio Grande Valley, Texas: projects filed since late 2024 (count, total and largest cost, cities, dates, newest projects) and state trade licenses held by the business (A/C, electrical, sign, elevator), current or expired. Pass part of the name (3+ characters). No match is a free 404. Example: "How many projects has this developer filed in the Valley since 2024, and how large was the biggest one?"

GET
https://fronterasignal.com/api/v1/companies
Price
$0.02
per call in USDC
Uptime
100%
last 30 days
Response time
628 ms
848 ms slowest 5%
Last check
Passed
22 min ago, next in 7 min

Run a free test callHow to call it

Reliability

All checks passedSome failedAll failedNot checked

Status and outage history · Atom feed · Watch with other listings

How to call it

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

Each call costs $0.02 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/companies?name=independent+school+district

Parameters

ParameterTypeRequiredDescription
namestringYesPart of an owner or design-firm name, case-insensitive.

Example response

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

Example response, 68 lines
{
  "as_of": "2026-10-04",
  "cadence": "weekly",
  "companies": [
    {
      "cities": [
        "Weslaco"
      ],
      "counties": [
        "Hidalgo"
      ],
      "first_seen": "2025-05-09",
      "largest_project_cost_usd": 2216000,
      "last_seen": "2025-12-09",
      "latest_projects": [
        {
          "address": "3601 N. Mile 5 1/2 W.",
          "city": "Weslaco",
          "county": "Hidalgo",
          "design_firm": "Sam Garcia Architects",
          "estimated_cost_usd": 100000,
          "estimated_end": "2026-02-01",
          "estimated_start": "2025-12-01",
          "facility": "Joe Calvillo Cate Center",
          "funding": "public",
          "id": "FSP-d28b5d37e3",
          "name": "Weslaco ISD-Security Vestibule at Joe Calvillo Cate Center",
          "owner": "Weslaco Independent School District",
          "registered": "2025-12-09",
          "scope_of_work": "New Storefront Installation enclosing a new security vestibule within the existing lobby area.",
          "source": "public state construction filing",
          "square_feet": 100,
          "status": "Review Complete",
          "type_of_work": "Renovation/Alteration",
          "zip": "78596"
        }
      ],
      "licenses": [],
      "name": "Weslaco Independent School District",
      "project_count": 9,
      "projects_with_cost": 9,
      "role": "owner",
      "total_estimated_cost_usd": 3487542
    }
  ],
  "coverage": {
    "counties": [
      "Cameron",
      "Hidalgo",
      "Starr",
      "Willacy"
    ],
    "registered_since": "2024-10-01"
  },
  "dataset": "companies",
  "disclaimer": "Every value carries as_of, age_days, cadence and stale (weekly measures go stale after 14 days, monthly measures after …",
  "license_note": "licenses are state trade licenses held by the business: air conditioning, electrical, electrical sign, elevator and app…",
  "licenses_as_of": "2026-09-19",
  "licenses_source": "state license records",
  "matched_names": 10,
  "note": "Public-record activity: projects filed with the state where the company is the owner or the design firm, up to 10 names…",
  "publisher": "Frontera Signal",
  "query": {
    "name": "independent school district"
  },
  "source": "public state construction filing",
  "status_checked": "2026-10-06"
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.02.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://fronterasignal.com/api/v1/companies?name=independent+school+district'

# 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/companies?name=independent+school+district' \
  | 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 $0.02 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.02" });
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 $0.02 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Ffronterasignal.com%2Fapi%2Fv1%2Fcompanies
const res = await pay("https://fronterasignal.com/api/v1/companies?name=independent+school+district");
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 $0.02 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.02"})
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/companies?name=independent+school+district")
    print(res.status_code, res.text)

Security scan

No findings

We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.

Recent checks

WhenResultHTTPTimePrice
22 min agoPassed402634 ms$0.02
5 h agoPassed402729 ms$0.02
10 h agoPassed402710 ms$0.02
15 h agoPassed402602 ms$0.02
19 h agoPassed402155 ms$0.02
Show 10 older checks
24 h agoPassed402628 ms$0.02
28 h agoPassed402701 ms$0.02
32 h agoPassed402631 ms$0.02
36 h agoPassed402787 ms$0.02
40 h agoPassed402537 ms$0.02
45 h agoPassed402467 ms$0.02
2 days agoPassed402185 ms$0.02
2 days agoPassed402255 ms$0.02
2 days agoPassed402848 ms$0.02
3 days agoPassed402630 ms$0.02