Godot Docs MCP

This project is

Look up documentation in Godot using fuzz search. Supports stable, latest, 4.5, 4.4, and 4.3 versions. The default version is "stable".

Tools

search_docs (searchTerm: string, version: "stable" | "latest" | "4.5" | "4.4" | "4.3" = "stable")

Search the Godot docs by term. Will return URLs to the documentation for each matching term. The resulting URLs will need to have their page content fetched to see the documentation.

get_docs_page_for_term (searchTerm: string, version: "stable" | "latest" | "4.5" | "4.4" | "4.3" = "stable")

Get the Godot docs content by term. Will return the full documentation page for the first matching result.

Configure the MCP server

To use the hosted HTTP server:

{ "mcpServers": { "godot": { "type": "http", "url": "https://godot-docs-mcp.j2d.workers.dev/mcp" } } }

Or, to connect to the MCP server using a stdio server:

{ "mcpServers": { "godot": { "command": "npx", "args": [ "mcp-remote", "https://godot-docs-mcp.j2d.workers.dev/mcp" ] } } }

How this works

The docs site uses a frontend search tool to handle the docs search. There is a file called searchindex.js in the docs site that contains an index of all the pages (URLs and titles, not content) on the site.

This project takes advantage of that in the following ways:

downloads each of those searchindex.js files for each version of the docs
converts the searchindex.js to a searchindex.js.json that is just json we need
indexes that new json using lucaong/minisearch
when a docs page is requested, the URL for the page is converted from HTML to markdown

Local development

MCP server

npm install npm run dev

Then, set up your tool:

{ "mcpServers": { "godot": { "command": "npx", "args": [ "mcp-remote", "http://localhost:8787/mcp" ] } } }

To debug the server, you can use this browser tool:

# in another tab npx @modelcontextprotocol/inspector

Then open http://localhost:6274/#tools.

You can also use https://www.mcpplayground.io/ to look at the tools in the live HTTP server.

Generating the docs

# create the folders echo "stable,latest,4.5,4.4,4.3" | string split "," | xargs -I {} mkdir -p "src/indexes/{}" # download the files echo "stable,latest,4.5,4.4,4.3" | string split "," | xargs -I {} curl -o "src/indexes/{}/searchindex.js" "https://docs.godotengine.org/en/{}/searchindex.js" # convert the .js to a .json lsd src/indexes/*/searchindex.js | xargs -n1 fish -c 'cat "$argv" | sd "Search.setIndex\(" "" | sed \'$ s/.$//\' | jq \'.docnames | to_entries | map({id: .key, name: .value, category: .value | split("/") | first, url: "/\\(.value).html"})\' > "$argv.json"'