witness MCP Server

What the code does

We read the source, 13 h 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.

    child = spawn(runner.cmd, [...runner.args, scriptPath, "--foreground", packageRoot, lock.lock, lock.token], {

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.

        return filepath.Join(root, subdir)

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 witness -- npx -y @witness-ai/opencode

{
  "mcpServers": {
    "witness": {
      "command": "npx",
      "args": [
        "-y",
        "@witness-ai/opencode"
      ]
    }
  }
}

[mcp_servers.witness]
command = "npx"
args = ["-y", "@witness-ai/opencode"]

{
  "mcpServers": {
    "witness": {
      "command": "npx",
      "args": [
        "-y",
        "@witness-ai/opencode"
      ]
    }
  }
}

{
  "servers": {
    "witness": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@witness-ai/opencode"
      ]
    }
  }
}