gaff-check — Claude Code MCP server: what it does, how to install
Checks Irish property records for planning, sale prices, flood and radon risk, zoning, BER context, and recorded-crime data.
claude mcp add gaff-check -- npx -y gaff-checkWhat gaff-check does
gaff-check gives an AI agent one access layer for public Irish property records. It can resolve an address, find nearby planning applications, inspect registered sale prices, and retrieve flood, radon, zoning, BER, and Garda-area crime context. The output contains source records and labelled derived context; it is not a valuation or a safety rating.
The server uses stdio and starts through npx -y gaff-check. Node.js 20 or newer is required, and the setup does not need an API key or a separate package install. Running the command by itself leaves it waiting for MCP requests, so add it to the client instead.
Location has a practical constraint: an Eircode alone cannot be turned into coordinates through a free official lookup, so provide an address or rough location too. Flood coverage also has a boundary: GSI maps are checked, while OPW river and coastal models are licence-restricted. Crime figures describe the wider Garda administrative area, not incidents at a single property.
What it helps with
- check nearby planning applications before bidding
- compare registered home sale prices by area
- screen an address for radon and flood exposure
- inspect zoning and local BER context
- review recorded-crime categories for a Garda area
Example prompts for the agent
- Review this Irish property address for planning, sale prices, radon, flooding, zoning, and BER context:
... - Build a due-diligence brief for
...; separate source records from derived context. - I have an Eircode plus a rough address for
.... Resolve the location and check the available property data.
How to install gaff-check
Platform CLI
claude mcp add gaff-check -- npx -y gaff-checkPlatform CLI
codex mcp add gaff-check -- npx -y gaff-checkConfig file
{
"mcpServers": {
"gaff-check": {
"command": "npx",
"args": [
"-y",
"gaff-check"
]
}
}
}Config file
{
"servers": {
"gaff-check": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"gaff-check"
]
}
}
}Platform CLI
gemini mcp add gaff-check npx -y gaff-checkStep by step, with commands for each platform: How to add an MCP server to Claude Code, Codex, Cursor, VS Code, Gemini CLI and more
Questions about gaff-check
How do I install gaff-check in Claude Code?
Run claude mcp add gaff-check -- npx -y gaff-check. Claude Code will then have the server available as an MCP integration.
What does gaff-check do?
It lets an AI agent query Irish public data covering planning, registered sales, radon, flooding, zoning, BER context, and recorded crime. It supplies records and context rather than a property valuation.
Can gaff-check resolve an Eircode on its own?
Give it the Eircode together with an address or rough location. A free official Eircode-to-coordinate lookup is not available.
