Koskamo

wsjtx-mcp

An MCP server that controls WSJT-X (FT8/FT4/JT65/MSK144/Q65/WSPR…) from MCP clients such as Claude Desktop and the MCP Inspector. It is the weak-signal leg of an operate log trio for amateur radio, allowing agents to operate the FT8/FT4 weak-signal world via WSJT-X UDP message protocol.

Package and access

Local package with source-attributed installation metadata. Koskamo does not execute packages during review.

wsjtx-mcp logo, by sbrunner-atxCommunity listingLocal stdioSource reviewed; not executedPublished by sbrunner-atx
Vendor documentation

What you can do with it

  • Operate WSJT-X from MCP clients
  • Read dial frequency and status
  • Start and halt transmission
  • Answer CQ decodes for QSOs

Source and maintenance

Community listingRegistry 0.1.3
mcp-registry: io.github.sbrunner-atx/wsjtx-mcp@0.1.3Source repository
Maintenance checked

Packages and installation

Source-provided package data. Koskamo has not executed or live-probed this package.

wsjtx-mcp 0.1.3

pypi
wsjtx-mcp package definition
{
  "version": "0.1.3",
  "transport": "stdio",
  "identifier": "wsjtx-mcp",
  "registryType": "pypi",
  "environmentVariables": [
    {
      "name": "WSJTX_CALLSIGN",
      "format": "string",
      "description": "Operator callsign — the single transmit gate. Blank = receive-only (refuses all transmit-initiating messages)."
    },
    {
      "name": "WSJTX_HOST",
      "format": "string",
      "default": "127.0.0.1",
      "description": "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."
    },
    {
      "name": "WSJTX_PORT",
      "format": "string",
      "default": "2237",
      "description": "WSJT-X Settings → Reporting → UDP Server port. Default 2237. Enable 'Accept UDP requests' for control."
    },
    {
      "name": "WSJTX_MULTICAST",
      "format": "string",
      "description": "Optional multicast group to join so multiple UDP consumers can coexist. Blank = unicast."
    },
    {
      "name": "WSJTX_INSTANCE",
      "format": "string",
      "description": "Optional WSJT-X instance Id to target when several broadcast here."
    }
  ]
}

Tools

Reported by the attributed source; not independently observed by Koskamo.

No tool definitions available.

Connect from your client

Each snippet configures the same source-provided package; replace placeholders before use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Cursor

Merge this local stdio configuration, replace every placeholder environment value, and restart Cursor. Koskamo has not executed this package.
Cursor configuration
{
  "mcpServers": {
    "wsjtx-mcp": {
      "command": "uvx",
      "args": [
        "wsjtx-mcp==0.1.3"
      ],
      "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>"
      }
    }
  }
}

Cline

Merge this local stdio configuration, replace every placeholder environment value, and restart Cline. Koskamo has not executed this package.
Cline configuration
{
  "mcpServers": {
    "wsjtx-mcp": {
      "command": "uvx",
      "args": [
        "wsjtx-mcp==0.1.3"
      ],
      "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>"
      }
    }
  }
}

VS Code

Merge this local stdio configuration, replace every placeholder environment value, and restart VS Code. Koskamo has not executed this package.
VS Code configuration
{
  "servers": {
    "wsjtx-mcp": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "wsjtx-mcp==0.1.3"
      ],
      "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>"
      }
    }
  }
}

Claude Desktop

Merge this local stdio configuration, replace every placeholder environment value, and restart Claude Desktop. Koskamo has not executed this package.
Claude Desktop configuration
{
  "mcpServers": {
    "wsjtx-mcp": {
      "command": "uvx",
      "args": [
        "wsjtx-mcp==0.1.3"
      ],
      "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>"
      }
    }
  }
}

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