Skip to main content
29M UK properties, one API call. Get your API key →

Agent MCP / Claude Desktop

UK property data in Claude Desktop

Claude Desktop is the Claude app for Mac and Windows. Add Homedata once in its settings and you can ask Claude about any home in England and Wales: the energy rating, the flood risk, the schools nearby, what it last sold for. Claude looks up the records and tells you where each answer came from.

Get your API key Set it up in two minutes ↓ 
~/Library/Application Support/Claude/claude_desktop_config.json
→ {
  "mcpServers": {
    "homedata": {
      "command": "npx",
      "args": ["-y", "homedata-mcp"],
      "env": { "HOMEDATA_API_KEY": "YOUR_API_KEY" }
    }
  }
}

Restart Claude Desktop after saving. Your new MCP server appears in the slider menu next to the chat input.

Ask Claude Desktop

What you can ask once it is connected

Is 14 Elm Row in a flood zone, and has anything been built near it?

Compare the EPC ratings of the three flats I'm viewing on Saturday.

Which primary schools near NR7 0AG are rated Good or better?

56 lookups in all, from EPC and flood risk to schools, planning and prices. See everything it can check →

Setup

Connect Homedata to Claude Desktop

  1. Get your API key. Sign up with your email and copy the key from your dashboard. Top up from £10.
  2. Add the block above to ~/Library/Application Support/Claude/claude_desktop_config.json. Put your key in place of YOUR_API_KEY. macOS: Linux uses ~/.config/Claude/, Windows uses %APPDATA%\Claude\.
  3. Restart and ask. Restart Claude Desktop after saving. Your new MCP server appears in the slider menu next to the chat input.

In practice

How people use Homedata in Claude Desktop

Ask Claude for a one-paragraph risk summary on an address (EPC, flood, planning history) without leaving the chat.

Drop a postcode into Claude and ask for an investment thesis with schools, demographics and recent planning permissions.

Questions

Claude Desktop and Homedata

How do I install the Homedata MCP in Claude Desktop?

In Claude Desktop, go to Settings, then Developer, then Edit Config, and add the homedata block from this page. It runs with npx, so there is nothing else to install. Put your API key in HOMEDATA_API_KEY, save, and restart Claude. Homedata then shows as a connected server.

Where is the Claude Desktop config file?

Settings, Developer, Edit Config opens it for you. On a Mac it lives at ~/Library/Application Support/Claude/claude_desktop_config.json, and on Windows at %APPDATA%\Claude\claude_desktop_config.json.

Is my API key shared with Anthropic?

No. Your key stays in the config file on your machine, and the Homedata server uses it to call our API. What Claude reads back, an EPC rating or a flood band, becomes part of your Claude conversation like anything else you share with it.

Where does the property data come from?

Homedata aggregates official UK sources: the EPC register, Environment Agency, Land Registry, ONS census, Ofsted, Home.co.uk and more, joined across 29 million UK properties. Every MCP tool maps to a typed endpoint on the public Homedata API.

Other agents

UK property data in Claude Code → UK property data in Cursor → UK property data in Codex CLI → UK property data in Windsurf → UK property data in Cline → UK property data in Continue.dev → UK property data in Zed →

Give Claude Desktop a key.

Then ask Claude Desktop about any home in England and Wales. Pay as you go from £10.

Get your API key About Agent MCP