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Hungarian Postcode Validator MCP server

online · 100% uptime
by UnbearableDev·io.github.UnbearableDev/hu-postcode-validator·v1.0.1
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Hungarian postcode lookup + validation - 3,484 codes, sub-10ms lookups, bulk address endpoint.

B75/100grade B
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Safety scan
B75/100

full report

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If you have run it, two minutes of your experience saves the next person an afternoon.

Hungarian Postcode Validator tools

Tool list not cached yet. `describe` through the gateway fetches it live.

Public scan report

scanner v0.1.9 · 2026-09-27 · same rubric, same numbers if you re-run it

no findings
  • –Code scanremote-only server, no package to scann/a
  • Live reliabilityremote reachable in 159ms (auth required)20/20
  • –Tool poisoningtools not inspected (endpoint requires auth); not countedn/a
  • Auth qualityauth enforced (unknown)9/15
  • Maintenancelast push 118 days ago8/15
  • Maintainer identityregistry namespace matches repository owner; GitHub account older than a year8/10
Overall 75/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

How Hungarian Postcode Validator compares

Against every graded MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score
75/100
higher than 45% of 48,273 servers
Uptime
100%
of our recent checks; the typical remote server answers 100%
Response time
39 ms
faster than 93% of 30,037 servers

Install Hungarian Postcode Validator in Claude Code, Cursor or VS Code

claude mcp add --transport http hu-postcode-validator https://unbearable-dev--hu-postcode-validator.apify.actor/mcp
Add to Cursor

What the publisher says

From the Hungarian Postcode Validator repository's README, as published. We do not edit it. Read it on GitHub

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

Example responses

lookuppostcode(1102)**

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

validateaddress(1102, "Szeged")**

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

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

Pricing

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.

Nothing above is checked by us. What we check is on the safety report.

Hungarian Postcode Validator: common questions

Is Hungarian Postcode Validator MCP server safe?
Mostly: it is graded B (75/100). Read the Hungarian Postcode Validator safety report
How do I install Hungarian Postcode Validator?
It runs remotely at unbearable-dev--hu-postcode-validator.apify.actor. Add it to Claude Code, Cursor, VS Code or Claude Desktop with the snippets above, or call it through the mcp.market gateway without installing anything.
Does Hungarian Postcode Validator need an API key?
Yes. The registry entry asks for Authorization.
Is Hungarian Postcode Validator maintained?
The last commit was 154 days ago (2026-06-01). The latest release is v1.0.1.
Is Hungarian Postcode Validator up?
100% of our last 28 checks got an answer. We check remote servers about four times a day.
How does Hungarian Postcode Validator compare with other MCP servers?
safety score 75/100 (higher than 45% of 48,273 servers); uptime 100% (of our recent checks; the typical remote server answers 100%); response time 39 ms (faster than 93% of 30,037 servers). Full comparison.

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