Enhanced ADB MCP Server

Instructions

Implementation Reference

• src/adb_mcp_server/server.py:864-867 (handler)

  The clear_proxy tool handler. Decorated with @mcp.tool() for automatic registration in the MCP server. Executes an ADB command to clear the global HTTP proxy setting by setting it to ":0".

  @mcp.tool()
  def clear_proxy(device_serial: str | None = None) -> str:
      """Clear HTTP proxy settings"""
      return run_adb(["shell", "settings", "put", "global", "http_proxy", ":0"], device_serial)

• src/adb_mcp_server/server.py:24-40 (helper)

  Core utility function used by clear_proxy (and all other tools) to execute ADB commands safely, handling device targeting, timeouts, and error capture.

  def run_adb(args: list[str], device_serial: str | None = None, timeout: int = 30) -> str:
      """Run an ADB command and return output"""
      cmd = ["adb"]
      if device_serial:
          cmd.extend(["-s", device_serial])
      cmd.extend(args)
      
      try:
          result = subprocess.run(cmd, capture_output=True, text=True, timeout=timeout)
          if result.returncode != 0 and result.stderr:
              return f"Error: {result.stderr}"
          return result.stdout
      except subprocess.TimeoutExpired:
          return "Error: Command timed out"
      except Exception as e:
          return f"Error: {str(e)}"