Wsjtx Mcp

io.github.sbrunner-atx/wsjtx-mcp · v0.1.4

Operate WSJT-X (FT8/FT4/WSPR) from MCP clients over its UDP message protocol.

Source code Set it up

Connect Runs on your machine

Terminal

claude mcp add wsjtx-mcp -e WSJTX_CALLSIGN=<WSJTX_CALLSIGN> -e WSJTX_HOST=<WSJTX_HOST> -e WSJTX_PORT=<WSJTX_PORT> -e WSJTX_MULTICAST=<WSJTX_MULTICAST> -e WSJTX_INSTANCE=<WSJTX_INSTANCE> -- uvx wsjtx-mcp==0.1.4

claude_desktop_config.json

{
  "mcpServers": {
    "wsjtx-mcp": {
      "command": "uvx",
      "args": [
        "wsjtx-mcp==0.1.4"
      ],
      "env": {
        "WSJTX_CALLSIGN": "<WSJTX_CALLSIGN>",
        "WSJTX_HOST": "<WSJTX_HOST>",
        "WSJTX_PORT": "<WSJTX_PORT>",
        "WSJTX_MULTICAST": "<WSJTX_MULTICAST>",
        "WSJTX_INSTANCE": "<WSJTX_INSTANCE>"
      }
    }
  }
}

~/.cursor/mcp.json

{
  "mcpServers": {
    "wsjtx-mcp": {
      "command": "uvx",
      "args": [
        "wsjtx-mcp==0.1.4"
      ],
      "env": {
        "WSJTX_CALLSIGN": "<WSJTX_CALLSIGN>",
        "WSJTX_HOST": "<WSJTX_HOST>",
        "WSJTX_PORT": "<WSJTX_PORT>",
        "WSJTX_MULTICAST": "<WSJTX_MULTICAST>",
        "WSJTX_INSTANCE": "<WSJTX_INSTANCE>"
      }
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "wsjtx-mcp": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "wsjtx-mcp==0.1.4"
      ],
      "env": {
        "WSJTX_CALLSIGN": "<WSJTX_CALLSIGN>",
        "WSJTX_HOST": "<WSJTX_HOST>",
        "WSJTX_PORT": "<WSJTX_PORT>",
        "WSJTX_MULTICAST": "<WSJTX_MULTICAST>",
        "WSJTX_INSTANCE": "<WSJTX_INSTANCE>"
      }
    }
  }
}

Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.

Tools

This server runs locally, so its tools are listed by your MCP client once it starts.

Environment variables

Name	Description
`WSJTX_CALLSIGN` Optional	Operator callsign — the single transmit gate. Blank = receive-only (refuses all transmit-initiating messages).
`WSJTX_HOST` Optional	Address to bind/receive WSJT-X UDP broadcasts on. For a remote WSJT-X use 127.0.0.1 with the mcp-host-bridge 'wsjtx' service and set the port to 2238.
`WSJTX_PORT` Optional	WSJT-X Settings → Reporting → UDP Server port. Default 2237. Enable 'Accept UDP requests' for control.
`WSJTX_MULTICAST` Optional	Optional multicast group to join so multiple UDP consumers can coexist. Blank = unicast.
`WSJTX_INSTANCE` Optional	Optional WSJT-X instance Id to target when several broadcast here.

Details

Package	`[email protected]` (PYPI, stdio)
First published	12 Nov 2026
Last updated	12 Nov 2026
Registry name	`io.github.sbrunner-atx/wsjtx-mcp`

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Live status

Local install

Installed and run on your own machine, so there is no public endpoint to check.

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