USGS Water MCP — wraps USGS National Water Information System (NWIS) REST services (free, no auth)
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Call this server's tools from your browser. Nothing to install.
Requests go through mcptry because browsers can't call most MCP servers directly. Header values are sent to the server for that request only and are never stored or logged.
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claude mcp add --transport http usgswater https://gateway.pipeworx.io/usgswater/mcp