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Ziplore: US ZIP Code API (county, time zone, demographics, radius)

by CyberMax-tools · remote · no sign-in to list tools · v1.0.0 · published by GitHub user CyberMax-tools

Ziplore: US ZIP to county, FIPS, time zone, Census demographics; radius and city ZIPs. Free, no key.

Final · 1Changes · 3
CompareRegistry entry

5 tools: 1 do something that can't be undone, 3 change things and 1 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 zip-data-api https://ziplore.cybermax-tools.workers.dev/mcp?via=mcp-registry

Findings

Matches of fixed checks, with the text they matched.

1 warn
  • Warnzip_distance

    The server marks "zip_distance" 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":true}; The input addresses people (input.to): what it sends 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.

5 tools

Can't be undone 1Claude Code: ask
  • zip_distanceGreat-circle distance in miles and km between two US ZIP codes.1 finding

    Why it is in this group

    • The input addresses people (input.to): what it sends cannot be taken back.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.

    Findings

    • Warn

      The server marks "zip_distance" 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":true}; The input addresses people (input.to): what it sends cannot be taken back.

      What this check looks for
    Description, as the server wrote it
    Great-circle distance in miles and km between two US ZIP codes.

    Annotations the server declares

    • readOnlyHint: true
    • openWorldHint: true
    • idempotentHint: true
    • destructiveHint: false
Changes things 3Claude Code: ask
  • city_zipsAll ZIP codes of a US city, largest population first.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
    Description, as the server wrote it
    All ZIP codes of a US city, largest population first.

    Annotations the server declares

    • readOnlyHint: true
    • openWorldHint: true
    • idempotentHint: true
    • destructiveHint: false
  • nearest_zipReverse geocode a latitude/longitude to the nearest US ZIP code(s), with distance.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
    Description, as the server wrote it
    Reverse geocode a latitude/longitude to the nearest US ZIP code(s), with distance.

    Annotations the server declares

    • readOnlyHint: true
    • openWorldHint: true
    • idempotentHint: true
    • destructiveHint: false
  • zips_in_radiusEvery US ZIP within N miles (max 25) of a ZIP or a lat/lon point, closest first, with distance in miles.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
    Description, as the server wrote it
    Every US ZIP within N miles (max 25) of a ZIP or a lat/lon point, closest first, with distance in miles.

    Annotations the server declares

    • readOnlyHint: true
    • openWorldHint: true
    • idempotentHint: true
    • destructiveHint: false
Only reads 1Claude Code: allow
  • zip_lookupCity, state, county and FIPS, coordinates, time zone with UTC offset, and Census demographics (population, income, home value, rent) for up to 10 US ZIP codes.No findings

    Why it is in this group

    • The name "zip_lookup" says "lookup": a word for reading.
    Description, as the server wrote it
    City, state, county and FIPS, coordinates, time zone with UTC offset, and Census demographics (population, income, home value, rent) for up to 10 US ZIP codes. Accepts ZIP+4, addresses and ZIPs missing a leading zero.

    Annotations the server declares

    • readOnlyHint: true
    • openWorldHint: true
    • idempotentHint: true
    • destructiveHint: 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 zip-data-api https://ziplore.cybermax-tools.workers.dev/mcp?via=mcp-registry

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__zip-data-api__zip_lookup"
    ],
    "ask": [
      "mcp__zip-data-api__zips_in_radius",
      "mcp__zip-data-api__city_zips",
      "mcp__zip-data-api__nearest_zip",
      "mcp__zip-data-api__zip_distance"
    ],
    "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 zip-data-api. Review it before you use it.