io.github.sbrunner-atx/wsjtx-mcp MCP Server

io.github.sbrunner-atx/wsjtx-mcp

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What is the io.github.sbrunner-atx/wsjtx-mcp MCP server?

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

How to install io.github.sbrunner-atx/wsjtx-mcp

Copy-paste configuration for popular MCP clients.

transport: stdio

Config generated by PluginBench — verify against the source before use.

Environment / auth

WSJTX_CALLSIGN
Operator callsign — the single transmit gate. Blank = receive-only (refuses all transmit-initiating messages).
WSJTX_HOST
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
WSJT-X Settings → Reporting → UDP Server port. Default 2237. Enable 'Accept UDP requests' for control.
WSJTX_MULTICAST
Optional multicast group to join so multiple UDP consumers can coexist. Blank = unicast.
WSJTX_INSTANCE
Optional WSJT-X instance Id to target when several broadcast here.

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "wsjtx-mcp": {
      "command": "uvx",
      "args": [
        "wsjtx-mcp"
      ],
      "env": {
        "WSJTX_CALLSIGN": "<YOUR_WSJTX_CALLSIGN>",
        "WSJTX_HOST": "<YOUR_WSJTX_HOST>",
        "WSJTX_PORT": "<YOUR_WSJTX_PORT>",
        "WSJTX_MULTICAST": "<YOUR_WSJTX_MULTICAST>",
        "WSJTX_INSTANCE": "<YOUR_WSJTX_INSTANCE>"
      }
    }
  }
}