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Castlemap MCP Server

Developer ToolsLow Risk10.0MCP RegistryRemote
Free

Server data from the Official MCP Registry

2,400 castles, fortresses & palaces: name search, nearby, fame ranking, statistics. No key, CC0.

About

2,400 castles, fortresses & palaces: name search, nearby, fame ranking, statistics. No key, CC0.

Remote endpoints: streamable-http: https://thecastlemap.com/mcp

Security Report

10.0
Low Risk10.0Low Risk

Valid MCP server (1 strong, 1 medium validity signals). No known CVEs in dependencies. Imported from the Official MCP Registry. 1 finding(s) downgraded by scanner intelligence.

7 tools verified · Open access · 1 issue found

Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.

Permissions Required

This plugin requests these system permissions. Most are normal for its category.

file_system

Check that this permission is expected for this type of plugin.

env_vars

Check that this permission is expected for this type of plugin.

HTTP Network Access

Connects to external APIs or services over the internet.

How to Connect

Remote Plugin

No local installation needed. Your AI client connects to the remote endpoint directly.

Add this to your MCP configuration to connect:

{
  "mcpServers": {
    "com-thecastlemap-castles": {
      "url": "https://thecastlemap.com/mcp"
    }
  }
}

Documentation

View on GitHub

From the project's GitHub README.

Castlemap MCP server

A Model Context Protocol server for the Castlemap atlas: 7,738 castles, fortresses, palaces and ruins across 141 countries, with coordinates, founding dates, categories, fame ranking and Wikipedia summaries.

It is already running. Point a client at the hosted endpoint — there is no install, no signup and no API key:

https://thecastlemap.com/mcp

Streamable HTTP, stateless, POST-only (a GET returning 405 is correct). Protocol revisions 2025-06-18 and 2025-03-26 are accepted.

Client configuration

{
  "mcpServers": {
    "castles": {
      "type": "http",
      "url": "https://thecastlemap.com/mcp"
    }
  }
}

Registry entry: com.thecastlemap/castles.

Tools

ToolWhat it does
search_castlesFind castles by name, country or category
get_castleFull record for one castle
castles_nearNearest castles to a coordinate (haversine); geocode first
top_castlesBest-known castles, by fame rank
list_countriesThe 141 countries, with counts
get_statisticsLive aggregates — totals, per-country, per-century
random_castleOne castle at random

Data

Derived from Wikidata, with summaries from Wikipedia and images from Wikimedia Commons. The atlas is curated rather than exhaustive: it covers castles with a documented history, a real photo and exact coordinates, not every earthwork and ruin.

The factual records are released as CC0 and downloadable as GeoJSON and CSV from thecastlemap.com/data — also mirrored on GitHub, Hugging Face, Kaggle and Zenodo (concept DOI 10.5281/zenodo.21322359, which always resolves to the newest version).

Running it yourself

server.mjs has zero dependencies — no SDK, no node_modules. It needs Node 18+ and a castles.geojson to read (download one from /data):

CASTLES_GEOJSON=/path/to/castles.geojson PORT=8891 node server.mjs

It binds 127.0.0.1:8891 by default; HOST, PORT and CASTLES_GEOJSON override that. The file is re-read when its mtime changes (throttled to 60s), so updating the data needs no restart.

castlemap-mcp.service is the systemd unit used in production — loopback-bound, DynamicUser, ProtectSystem=strict, with nginx terminating TLS in front. Set ExecStart to your own node path and ReadOnlyPaths/CASTLES_GEOJSON to wherever the data lives.

Provenance

Built by flightmussy with AI assistance: the concept, direction and review are mine; much of the implementation was written with Claude. The underlying data is not generated — it comes from Wikidata, and every record is traceable to its Wikidata item.

License

Code: MIT (see LICENSE). Data: CC0. Wikipedia summary text remains CC BY-SA and is attributed per record.

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Castlemap MCP Server - 2,400 castles, fortresses & palaces: name search, nearby, | MCP Marketplace