J2C Java to C++ MCP Server

What the code does

We read the source, 5 d ago · rules 995398eba69f

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.

    const child = childProcess.spawn(java, ["-jar", jar, ...args], { stdio: "inherit" });

Found in continuous integration, deployment or infrastructure files, or in a neighbouring package of the same monorepo. None of this is installed when you add the server: it describes how the project is built and released. We list it because a leaked key in a build pipeline is still a real problem, but it is not something this server does on your machine.

        ProcessBuilder process = new ProcessBuilder(command).directory(output)

    if (!BUILD_FILES.some((name) => fs.existsSync(path.join(root, name)))) {

Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.

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 j2c -- npx -y @juangp3/j2c-mcp

{
  "mcpServers": {
    "j2c": {
      "command": "npx",
      "args": [
        "-y",
        "@juangp3/j2c-mcp"
      ]
    }
  }
}

[mcp_servers.j2c]
command = "npx"
args = ["-y", "@juangp3/j2c-mcp"]

{
  "mcpServers": {
    "j2c": {
      "command": "npx",
      "args": [
        "-y",
        "@juangp3/j2c-mcp"
      ]
    }
  }
}

{
  "servers": {
    "j2c": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@juangp3/j2c-mcp"
      ]
    }
  }
}