Hungarian Postcode Validator

Name: Hungarian Postcode Validator
Author: UnbearableDev

by UnbearableDevversion 1.0.1i★ –iRuns in the cloud

Registry nameio.github.UnbearableDev/hu-postcode-validator

Install

Overview

Description from the maker (original English)

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

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs in the cloud
Transport: Streamable HTTP
Category: Other
You need to fill in: Authorization

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 1 of 1 passed
Runs on the maker’s server: what you ask it goes through their server.
You fill in yourself: Authorization

Values marked secret are keys to your account. Never share them or paste them into a chat.

You need

Runs in the cloudNothing to install; it connects over the internet

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

This address needs a key in a request header, which the add-connector menu cannot set. Use Claude Code, Cursor or VS Code instead.

Run this in your terminal

claude mcp add --transport http hu-postcode-validator https://unbearable-dev--hu-postcode-validator.apify.actor/mcp --header 'Authorization: your-value'

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "hu-postcode-validator": {
      "url": "https://unbearable-dev--hu-postcode-validator.apify.actor/mcp",
      "headers": {
        "Authorization": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "hu-postcode-validator": {
      "type": "http",
      "url": "https://unbearable-dev--hu-postcode-validator.apify.actor/mcp",
      "headers": {
        "Authorization": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This address needs a key in a request header, which the add-connector menu cannot set. Use Claude Code, Cursor or VS Code instead.

Your choice stays on this device in a cookie; no account needed.

Values you fill in

Authorization secret required HTTP header
Apify API token. Format: 'Bearer '. Get yours at https://console.apify.com/account/integrations

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

We have not read this server’s tool list yet; we check endpoints in rotation.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 6, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account UnbearableDev, which owns the repo
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
… Not checked yet
Endpoint responds
Not checked yet; we check endpoints in rotation
… Not checked yet
Sign-in with OAuth
Not checked yet; we check endpoints in rotation
… Not checked yet
No hidden instructions in tool descriptions
Not checked yet; we read the tool list when we check the endpoint

Compared with others in Otheri

More stars than 0% of the other 32509 servers in this category
Published to the registry more recently than 12% of the other 32509 servers in this category
Basic checks equal to or better than 100% of the other 32509 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Hungarian Postcode Validator safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

You need to fill in: Authorization

Does it run on my computer or in the cloud?

It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.

Is it still maintained?

The GitHub repo last changed –, and the latest version (1.0.1) reached the registry 5 months ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.

What can I use instead?

In the same category: Spec Driven Development, Remote Desktop Commander, Fomu MCP

Alternatives

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README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

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](https://github.com/UnbearableDev). 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

Tool	Purpose	Price
`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

Event	USD 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: unbearabledev@gmail.com or the GitHub org UnbearableDev.

Hungarian Postcode Validator

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

Values you fill in

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Otheri

Common questions

Alternatives

Spec Driven Development

Remote Desktop Commander

Fomu MCP

README from the maker

Hungarian Postcode & Address Validator

Available on

What it does

Tools

Example responses

Pricing

Data sources

Connecting from Claude Desktop

What's NOT covered

Source / contact