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GeoTap MCP Server

npm version License: MIT

Connect Claude, Cursor, Windsurf, and other AI tools to 80+ US federal environmental and infrastructure data sources.

GeoTap aggregates data from FEMA, USGS, EPA, NOAA, USDA, USFWS, DOT, Census, and more — accessible through the MCP (Model Context Protocol).

Web App: geotapdata.com — no code required, draw on a map and explore data visually.


Getting Started

Prerequisites

  • Node.js (v18 or later) — download here

  • An email address to register for your API key

Step 1: Get Your API Key

Go to geotapdata.com/developers and register with your email to get a free API key.

Your API key will be sent to your email. Save it — you'll need it in the next step.

Step 2: Set Up the MCP Server

Choose your AI tool below and follow the instructions. The MCP server is installed automatically via npx — no manual download needed.


  1. Open Claude Desktop

  2. Go to Settings (gear icon) → DeveloperEdit Config

  3. This opens your claude_desktop_config.json file. Add the following (replace your-api-key-here with your actual key):

{
  "mcpServers": {
    "geotap": {
      "command": "npx",
      "args": ["-y", "geotap-mcp-server"],
      "env": {
        "GEOTAP_API_KEY": "your-api-key-here"
      }
    }
  }
}

Config file location:

  • macOS: ~/Library/Application Support/Claude/claude_desktop_config.json

  • Windows: %APPDATA%\Claude\claude_desktop_config.json

  1. Restart Claude Desktop completely (quit and reopen)

  2. You should see a hammer icon (🔨) in the chat input — that means GeoTap is connected


Run this command to add GeoTap to your Claude Code MCP servers:

claude mcp add geotap -- npx -y geotap-mcp-server

Then set your API key as an environment variable. Add this to your shell profile (~/.zshrc, ~/.bashrc, etc.):

export GEOTAP_API_KEY="your-api-key-here"

Restart your terminal, then start Claude Code. GeoTap tools will be available automatically.


  1. Open Cursor

  2. Go to Settings (⌘ + , on Mac, Ctrl + , on Windows) → search for "MCP"

  3. Click "Edit in settings.json" or add to your .cursor/mcp.json file:

{
  "mcpServers": {
    "geotap": {
      "command": "npx",
      "args": ["-y", "geotap-mcp-server"],
      "env": {
        "GEOTAP_API_KEY": "your-api-key-here"
      }
    }
  }
}
  1. Restart Cursor

  2. Open the AI chat panel — GeoTap tools will appear in the available tools list


  1. Open Windsurf

  2. Go to SettingsMCP Servers (or edit ~/.codeium/windsurf/mcp_config.json directly)

  3. Add:

{
  "mcpServers": {
    "geotap": {
      "command": "npx",
      "args": ["-y", "geotap-mcp-server"],
      "env": {
        "GEOTAP_API_KEY": "your-api-key-here"
      }
    }
  }
}
  1. Restart Windsurf


For any MCP client, the server can be run directly:

# Install globally
npm install -g geotap-mcp-server

# Run with your API key
GEOTAP_API_KEY=your-api-key-here geotap-mcp

The server communicates over stdio — point your MCP client to the geotap-mcp command with the GEOTAP_API_KEY environment variable set.


Step 3: Start Asking Questions

Once connected, ask your AI assistant to pull data for any US site. GeoTap collects from all 80+ federal sources at once — just give it a location and then ask whatever you want:

"Collect site data for 123 Main St, Austin TX"

Once the data comes back (~60-120 seconds), you can ask follow-up questions like:

  • "Is this site in a flood zone?"

  • "What soil types are here and what's the curve number?"

  • "Are there any contamination concerns nearby?"

  • "What's the 100-year rainfall?"

  • "What permits would I need to develop this site?"

  • "Summarize the key environmental risks"

Troubleshooting

Problem

Solution

Server won't start / "GEOTAP_API_KEY is required"

Make sure your API key is set in the env block of your MCP config

"npx: command not found"

Install Node.js (v18+), which includes npx

Tools don't appear in Claude Desktop

Restart Claude Desktop completely (quit + reopen, not just close the window)

Rate limit errors

Wait a moment and retry — burst limits are per-minute


Data Sources

Agency

Data Available

FEMA

Flood zones, FIRM panels, flood insurance rate maps, floodway boundaries

USGS

Elevation (3DEP at 1m/10m/30m), geology, streamgages, groundwater, land use (NLCD), StreamStats, National Streamflow Statistics (NSS)

EPA

Water quality (ATTAINS), Superfund sites, brownfields, TRI toxic releases, USTs, NPDES outfalls

NOAA

Rainfall (Atlas 14), IDF curves, tide stations, climate projections (CMIP6), weather stations, radar

USDA/NRCS

Soils (SSURGO), curve numbers, hydrologic soil groups, TR-55 parameters

USFWS

Wetlands (NWI), endangered species, critical habitat

DOT

Bridges, tunnels, National Bridge Inventory

Census

Demographics, boundaries, TIGER geographic data

USACE

Dams, levees, navigation channels

NHD

Stream flowlines, hydrography, watershed boundaries (HUC-8/10/12)

Other

Power plants, mines, tribal lands, building footprints, and more

Every response includes source attribution — the federal agency, dataset name, and reference URL.


Configuration

Variable

Description

Required

GEOTAP_API_KEY

Your API key from registration

Yes

GEOTAP_API_URL

Custom API endpoint (advanced)

No


Use Cases

Civil & Environmental Engineering

  • Stormwater design: rainfall (Atlas 14, IDF curves, hyetographs), curve numbers, time of concentration, peak discharge

  • Flood analysis: Bulletin 17C flood frequency, flow duration curves, regional regression estimates

  • Watershed delineation and hydrologic modeling inputs (HEC-HMS, SWMM)

  • Low-flow analysis for NPDES permits (7Q10, 7Q2, harmonic mean flow)

  • Climate-adjusted design storms for infrastructure resilience

Real Estate & Development

  • Environmental due diligence for property transactions

  • Site feasibility and developability scoring (0-100 scale)

  • Flood zone, wetland, and contamination screening

  • Permit pathway analysis (Section 404, NPDES, floodplain development)

Environmental Consulting

  • Phase I ESA desktop data gathering (EPA sites, water quality)

  • Wetland delineation support (NWI + soils + hydrology)

  • Endangered species habitat screening (USFWS critical habitat)

  • Water quality impairment assessment (EPA ATTAINS 303(d) list)


Contributing

Contributions welcome! Please open an issue or pull request.

License

MIT

-
security - not tested
A
license - permissive license
-
quality - not tested

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