Wsjtx MCP Server

What the code does

We read the source, 1 h ago · rules 3dff92dd89df

What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.

            raw = subprocess.run(cmd, capture_output=True, text=True, timeout=5).stdout

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Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

claude mcp add wsjtx-mcp -- uvx wsjtx-mcp

{
  "mcpServers": {
    "wsjtx-mcp": {
      "args": [
        "wsjtx-mcp"
      ],
      "command": "uvx"
    }
  }
}

[mcp_servers.wsjtx-mcp]
command = "uvx"
args = ["wsjtx-mcp"]

{
  "mcpServers": {
    "wsjtx-mcp": {
      "args": [
        "wsjtx-mcp"
      ],
      "command": "uvx"
    }
  }
}

{
  "mcpServers": {
    "wsjtx-mcp": {
      "args": [
        "wsjtx-mcp"
      ],
      "command": "uvx"
    }
  }
}

This one needs environment variables set before it will start: 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.). The author declared them in the registry entry; get the values from the project itself.