SWATGenX MCP Server

The agent-native front door to SWATGenX — automated, calibrated SWAT+ watershed modeling for the conterminous United States.

Add it to Claude or any MCP client and a continental watershed-modeling platform becomes a set of callable tools: search calibrated SWAT+ models, read calibration and held-out validation scores, query a national groundwater lithology inventory of ~28.8 million depth intervals, query a national PFAS monitoring inventory, and — with an API key — order and download watershed models.

• Endpoint: https://www.swatgenx.com/mcp
• Transport: streamable HTTP
• Full documentation & client setup: https://www.swatgenx.com/mcp-server

Connect

{
  "mcpServers": {
    "swatgenx": {
      "type": "http",
      "url": "https://www.swatgenx.com/mcp"
    }
  }
}

Six tools need no credentials. To order or download models, send your API key in the X-SWATGenX-Api-Key header (free key with an account at swatgenx.com).

Tools

Tool	What it does	Needs
search_swat_models	Browse the example-model catalog (state, size, calibration status)	—
get_model_calibration	Calibration and held-out validation NSE / PBIAS for one model	—
query_groundwater	Nearest wells and lithology from the national inventory	—
query_pfas	National PFAS monitoring inventory by state or analyte	—
request_model	Preview what SWATGenX would build for a gauge or HUC12 outlet	—
get_access_info	The access ladder and your current tier	—
order_model	Order a real SWAT+ build	API key
get_order_status	Track a build order to completion	API key
list_my_models	List your build orders	API key
download_model	Mint a 24-hour download link	API key

About

SWATGenX builds physically based SWAT+ and coupled SWAT+/MODFLOW 6 models from NHDPlus HR hydrography, gSSURGO soils, NLCD land cover and PRISM climate, and calibrates them against USGS streamflow. The national groundwater inventory this server queries is described in a preprint under open review at Earth System Science Data (doi:10.5194/essd-2026-527).

The server implementation lives in the main SWATGenX repository; this repository holds the registry manifest (server.json) and the publish workflow.

License

MIT