@open-mcp/epa-lew

Installing

First set the environment variables as shell variables:

# No environment variables required for this server

Then use the OpenMCP config CLI to add the server to your MCP client:

Claude desktop

npx @open-mcp/config add epa-lew \
  ~/Library/Application\ Support/Claude/claude_desktop_config.json

Cursor

Run this from the root of your project directory or, to add to all cursor projects, run it from your home directory ~.

npx @open-mcp/config add epa-lew \
  .cursor/mcp.json

Other

npx @open-mcp/config add epa-lew \
  /path/to/client/config.json

Manually

If you don't want to use the helper above, add the following to your MCP client config manually:

{
  "mcpServers": {
    "epa-lew": {
      "command": "npx",
      "args": ["-y", "@open-mcp/epa-lew"],
      "env": {}
    }
  }
}

Customizing the base URL

Set the environment variable OPEN_MCP_BASE_URL to override each tool's base URL. This is useful if your OpenAPI spec defines a relative server URL.

Other environment variables

No environment variables required

Inspector

Needs access to port 3000 for running a proxy server, will fail if http://localhost:3000 is already busy.

npx -y @modelcontextprotocol/inspector npx -y @open-mcp/epa-lew

Open http://localhost:5173
Transport type: STDIO
Command: npx
Arguments: -y @open-mcp/epa-lew
Click Environment Variables to add
Click Connect

It should say MCP Server running on stdio in red.

Click List Tools

Tools

expandSchema

Expand the input schema for a tool before calling the tool

Input schema

{
  toolName: z.string(),
  jsonPointers: z.array(z.string().startsWith("/").describe("The pointer to the JSON schema object which needs expanding")).describe("A list of JSON pointers"),
}

calculaterfactorget

Environment variables

Input schema

{
  "start_date": z.string().describe("Date of initial earth disturbance provided in ISO 8601 format"),
  "end_date": z.string().describe("Date of final stabilization provided in ISO 8601 format"),
  "location": z.string().describe("Location to be examined for LEW eligibility provided as a GeoJSON point geometry"),
  "X-Api-Key": z.string().describe("API key used to access EPA web service resources. The below default value key is used for testing purposes only. Web service consumers should <a target=\"_blank\" href=\"..\\api_key_signup.html\">obtain their own API key</a>")
}

healthcheck

Environment variables

Input schema

{
  "X-Api-Key": z.string().describe("API key used to access EPA web service resources. The below default value key is used for testing purposes only. Web service consumers should <a target=\"_blank\" href=\"..\\api_key_signup.html\">obtain their own API key</a>")
}

epa-lew

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