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Frontera Signal

by fronterasignal.com · remote · no sign-in to list tools · v1.0.0 · published by com.fronterasignal

Rio Grande Valley, Texas construction data: free catalog, samples and series; paid calls via x402

Final · 1
CompareRegistry entry

4 tools: 1 do something that can't be undone and 3 only read.

Scanned Oct 21, 2026

1 check matched something in the tool definitions. No finding is not a safety guarantee. How the checks work.

claude mcp add --transport http frontera-signal https://fronterasignal.com/mcp

Findings

Matches of fixed checks, with the text they matched.

1 warn
  • Warnhow_to_pay

    The server marks "how_to_pay" read-only (readOnlyHint: true), and its own name, description or input give the class "irreversible".

    Matched text

    annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The name "how_to_pay" says "pay": a word that usually means money moves, which cannot be taken back.

    What this check looks for

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

4 tools

Can't be undone 1Claude Code: ask
  • how_to_payGet the exact URL to call for a paid answer, with its price, network and asset.1 finding

    Why it is in this group

    • The name "how_to_pay" says "pay": a word that usually means money moves, which cannot be taken back.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.

    Findings

    • Warn

      The server marks "how_to_pay" read-only (readOnlyHint: true), and its own name, description or input give the class "irreversible".

      Matched text

      annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The name "how_to_pay" says "pay": a word that usually means money moves, which cannot be taken back.

      What this check looks for
    Description, as the server wrote it
    Get the exact URL to call for a paid answer, with its price, network and asset. Pass the endpoint key and the query parameters you plan to send; they go through the same free check the API runs before payment, so a query that would be refused or come back empty shows up here. This tool never calls the paid endpoint and never pays. Payment is x402: no account or API key, USDC on Base.

    Annotations the server declares

    • title: Paid URL and price
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
Only reads 3Claude Code: allow
  • get_free_seriesGet the latest 4 weeks of a weekly Rio Grande Valley series for free: permits-weekly (building permits by city), cost-basket-weekly (building-input prices), absorption (housing sup…No findings

    Why it is in this group

    • The name "get_free_series" says "get": a word for reading.
    Description, as the server wrote it
    Get the latest 4 weeks of a weekly Rio Grande Valley series for free: permits-weekly (building permits by city), cost-basket-weekly (building-input prices), absorption (housing supply), labor-ranges (labor and financing conditions) or calls (graded forecasts). Each row carries its week, as_of date and status. The full history is a paid endpoint; how_to_pay with series-<name> gives its URL and price.

    Annotations the server declares

    • title: Free weekly series
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • get_sampleGet a real answer from one paid endpoint for free, exactly as a paid call returns it, so you can check the fields, dates and coverage before you pay.No findings

    Why it is in this group

    • The name "get_sample" says "get": a word for reading.
    Description, as the server wrote it
    Get a real answer from one paid endpoint for free, exactly as a paid call returns it, so you can check the fields, dates and coverage before you pay. Pass the endpoint key from list_endpoints, such as snapshot, projects or series-permits-weekly.

    Annotations the server declares

    • title: Free sample answer
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • list_endpointsList every paid Frontera Signal endpoint before you spend anything.No findings

    Why it is in this group

    • The name "list_endpoints" says "list": a word for reading.
    Description, as the server wrote it
    List every paid Frontera Signal endpoint before you spend anything. Covers Rio Grande Valley, Texas construction data: permits, building-input prices, housing supply, labor, commercial projects filed with the state, company track records, filed cost per square foot, material shelf prices and the weekly briefing. Each entry has the price per call in USDC, what the call returns, an example question, its parameters with valid values and a free sample URL. Free.

    Annotations the server declares

    • title: List paid endpoints
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Install

Pinned to version 1.0.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http frontera-signal https://fronterasignal.com/mcp

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json
{
  "permissions": {
    "allow": [
      "mcp__frontera-signal__list_endpoints",
      "mcp__frontera-signal__get_sample",
      "mcp__frontera-signal__get_free_series"
    ],
    "ask": [
      "mcp__frontera-signal__how_to_pay"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as frontera-signal. Review it before you use it.