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Home/Servers/Hungarian Postcode Validator

Hungarian Postcode Validator

by io.github.UnbearableDev

Hungarian postcode lookup + validation - 3,484 codes, sub-10ms lookups, bulk address endpoint.

Power your agent

Add this server

The publisher's own URL. Not a PlugMCP endpoint.

Server URL
https://unbearable-dev--hu-postcode-validator.apify.actor/mcp
Provider
Add in Claude

Claude opens with the name and URL filled in. You still confirm it there.

Claude Code
claude mcp add --transport http io.github.unbearabledev-hu-postcode-validator https://unbearable-dev--hu-postcode-validator.apify.actor/mcp

Run in a terminal.

Claude Desktop
{
  "mcpServers": {
    "io.github.unbearabledev-hu-postcode-validator": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-remote",
        "https://unbearable-dev--hu-postcode-validator.apify.actor/mcp"
      ]
    }
  }
}

claude_desktop_config.json

Step-by-step: add this in Claude

Remote URL or a command on your machine? How the two installs differ

Run on PlugMCP

Host a copy with our keys and logs.

A new server you create. It is not this listing's official endpoint. Use the publisher install when you want their URL and their credentials.

Launch

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Questions

How do I install Hungarian Postcode Validator?
Copy the http config for Cursor, Claude Desktop, Claude Code, or VS Code on this page. It uses the publisher's install, not a PlugMCP proxy.
Does Hungarian Postcode Validator need an API key?
No required environment variable is listed on this record.
What transport does Hungarian Postcode Validator use?
Hungarian Postcode Validator is reached over HTTP.
When was Hungarian Postcode Validator last checked?
Last checked 2026-10-16. Hungarian postcode lookup + validation - 3,484 codes, sub-10ms lookups, bulk address endpoint.

Hungarian postcode lookup + validation - 3,484 codes, sub-10ms lookups, bulk address endpoint.

Hungarian Postcode & Address Validator

MCP server that validates Hungarian postcodes and addresses. Powered by the official Magyar Posta catalog and KSH (Hungarian Central Statistics Office) settlement data. Pennies per call.

Built by Unbearable Labs. Pay-per-event pricing — only billed when a tool is actually called.

Available on

  • Apify Actor Store — primary, metered usage (PPE)
  • MCPize — pending submission
  • MCP.so — pending submission
  • PulseMCP — pending submission
  • Smithery — pending submission
  • Glama — pending submission

Newsletter: Unbearable TechTips Weekly · All Actors: github.com/UnbearableDev

What it does

Point any MCP-capable client (Claude Desktop, Cursor, n8n, Make, Zapier, custom agents) at this server and get fast, structured answers to Hungarian address questions:

  • Validate a (postcode, city) pair before storing it in your DB
  • Look up the settlement and county for any HU postcode
  • Find all postcodes that serve a given city (handy for Budapest: 23 districts, 100+ postcodes)
  • List every postcode in a Hungarian county
  • Map Budapest district numbers (1–23 or I–XXIII) to their postcode ranges

Tools

ToolPurposePrice
lookup_postcode(postcode)Settlement + county + (if BP) district for a 4-digit HU postcode$0.001
lookup_city(city)All postcodes for a city (diacritic-insensitive — gyor matches Győr)$0.001
validate_address(postcode, city)yes/no + corrected suggestion if mismatch$0.001
budapest_district_lookup(district)Budapest I-XXIII (or 1-23) → list of postcodes in that district$0.001
list_postcodes_in_county(county_name)Bulk listing — every postcode in a county$0.005

Example responses

lookup_postcode(1102)

{
  "postcode": 1102,
  "found": true,
  "matches": [
    {
      "postcode": 1102,
      "settlement": "Budapest",
      "settlement_part": "X. kerület",
      "county": "Budapest"
    }
  ],
  "budapest_district": "X."
}

validate_address(1102, "Szeged")

{
  "valid": false,
  "reason": "city_mismatch",
  "postcode": 1102,
  "city": "Szeged",
  "expected_settlements": ["Budapest"]
}

budapest_district_lookup(14) (or "XIV") returns all postcodes in District XIV.

Pricing

EventUSD per call
lookup-call (most tools)$0.001
bulk-call (list_postcodes_in_county)$0.005

Effectively a free utility for occasional use; meaningful at high call volumes.

Data sources

  • Magyar Posta official postal catalog (Iranyitoszam-Internet_uj.xlsx) — postcode → settlement mapping
  • KSH (Hungarian Central Statistical Office) settlement registry — county / district / KSH code per settlement, via the open tamas-ferenci/IrszHnk compilation

Coverage: 3,484 postcode-settlement entries spanning 2,962 unique postcodes (1011–9985), all 19 Hungarian counties + Budapest. Refreshed quarterly.

Connecting from Claude Desktop

{
  "mcpServers": {
    "hu-postcode": {
      "transport": "streamable-http",
      "url": "https://YOUR-ACTOR-URL.apify.actor/mcp"
    }
  }
}

What's NOT covered

  • Street-level address validation (no clean public data source post-2022 KEKKH restrictions)
  • Fuzzy / Levenshtein city-name matching (v1.1)
  • Non-Hungarian addresses (consider another MCP for those)

Source / contact

Issues and ideas: [email protected] or the GitHub org UnbearableDev.

How do I install Hungarian Postcode Validator?
Copy the http config for Cursor, Claude Desktop, Claude Code, or VS Code on this page. It uses the publisher's install, not a PlugMCP proxy.
Does Hungarian Postcode Validator need an API key?
No required environment variable is listed on this record.
What transport does Hungarian Postcode Validator use?
Hungarian Postcode Validator is reached over HTTP.
When was Hungarian Postcode Validator last checked?
Last checked 2026-10-16. Hungarian postcode lookup + validation - 3,484 codes, sub-10ms lookups, bulk address endpoint.

No tool list yet. Remote servers get one after the first health check.

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