Castles

Name: Castles
Author: Flightmussy

by Flightmussyversion 1.0.3i★ –iRuns in the cloud

Registry namecom.thecastlemap/castles

Install

Overview

Description from the maker (original English)

Castles, fortresses, palaces and ruins worldwide: search, nearby, fame ranking, statistics. CC0.

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 checksi0 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: Search & AI memory

Install

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

Before you install

Basic checks: 0 of 1 passed
Runs on the maker’s server: what you ask it goes through their server.
The registry lists no key to fill in.

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 …”.

Works in Claude on the web, desktop and mobile:

Open Settings → Connectors
Press Add custom connector
Paste the address below and press Add
If it asks you to sign in, sign in with the maker

https://thecastlemap.com/mcp

Run this in your terminal

claude mcp add --transport http castles https://thecastlemap.com/mcp

Open in Cursor

Or copy the settings yourself

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

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

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

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.

ChatGPT connects only to servers on the internet:

Open ChatGPT on the web → Settings → Connectors (Apps)
Press Create or Add (some plans need Developer mode under Advanced first)
Paste the address below, give it a name and save
If it asks you to sign in, sign in with the maker

https://thecastlemap.com/mcp

Menu names can differ slightly by plan and over time.

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

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

! Caution
Maker matches the repo
The publisher (thecastlemap.com) is not the repo owner (Flightmussy); someone else may have listed it
… 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 Search & AI memoryi

More stars than 0% of the other 7247 servers in this category
Published to the registry more recently than 35% of the other 7247 servers in this category
Basic checks equal to or better than 34% of the other 7247 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 Castles safe?

It passed 0 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?

The registry does not list a required key, though some servers ask you to sign in on first use.

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 (1.0.3) reached the registry 2 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: Context7, Codebase Memory, Exa

Alternatives

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Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

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Computer or cloud★ 64,224MITUpdated today

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Codebase Memory

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Runs on your computer★ 48,148MITUpdated 20 days ago

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Exa

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Connect AI agents to Exa for web search, content fetching, and multi-step research.

Runs in the cloud★ 5,213MITUpdated last month

Install

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.

Castlemap MCP server

A Model Context Protocol server for the Castlemap atlas: 7,786 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

Tool	What it does
`search_castles`	Find castles by name, country or category
`get_castle`	Full record for one castle
`castles_near`	Nearest castles to a coordinate (haversine); geocode first
`top_castles`	Best-known castles, by fame rank
`list_countries`	The 141 countries, with counts
`get_statistics`	Live aggregates — totals, per-country, per-century
`random_castle`	One 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.

Castles

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

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 Search & AI memoryi

Common questions

Alternatives

Context7

Codebase Memory

Exa

README from the maker

Castlemap MCP server

Client configuration

Tools

Data

Running it yourself

Provenance

License