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io.github.cyanheads/usgs-water-mcp-server

https://usgs-water.caseyjhand.com/mcp

● healthy

Query real-time and historical USGS water data from ~8,000 stream gages and groundwater wells.

Transport

streamable-http

Auth

—

Cost

—

How to connect

MCP endpoint (streamable-http)

https://usgs-water.caseyjhand.com/mcp

JSON-RPC initialize probe

curl -X POST https://usgs-water.caseyjhand.com/mcp \
  -H 'Content-Type: application/json' \
  -H 'Accept: application/json, text/event-stream' \
  -d '{"jsonrpc":"2.0","id":1,"method":"initialize","params":{}}'

Source code

https://github.com/cyanheads/usgs-water-mcp-server