Enhanced ADB MCP Server

Instructions

Implementation Reference

• src/adb_mcp_server/server.py:563-584 (handler)

  The main handler function for the 'get_current_activity' tool, decorated with @mcp.tool() for automatic registration in the MCP server. It executes ADB command to dump activity info, parses for the focused package/activity using regex, and returns a dict with package, activity, and full_component.

  @mcp.tool()
  def get_current_activity(device_serial: str | None = None) -> dict:
      """Get the currently focused app and activity"""
      output = run_adb(["shell", "dumpsys", "activity", "activities"], device_serial)
      
      result = {
          "package": None,
          "activity": None,
          "full_component": None
      }
      
      # Look for ResumedActivity or mFocusedActivity
      for line in output.split('\n'):
          if 'ResumedActivity' in line or 'mFocusedActivity' in line:
              match = re.search(r'([a-zA-Z0-9_.]+)/([a-zA-Z0-9_.]+)', line)
              if match:
                  result['package'] = match.group(1)
                  result['activity'] = match.group(2)
                  result['full_component'] = f"{match.group(1)}/{match.group(2)}"
              break
      
      return result