Native_MCP

Instructions

Implementation Reference

• tools/react-native-helper/main.py:1-4 (handler)

  The core handler function for the 'generate_component' tool. It takes a 'component_name' parameter and generates a basic React Native functional component as a string.

  def generate_component(params):
      name = params.get("component_name", "MyComponent")
      code = f"""import React from 'react';\nimport {{ View, Text }} from 'react-native';\n\nconst {name} = () => (\n  <View>\n    <Text>{name} works!</Text>\n  </View>\n);\n\nexport default {name};\n"""
      return {"component": code} 

• mcp_server.py:19-45 (registration)

  The load_tools method in ToolManager dynamically discovers tool directories under 'tools/', loads their mcp.json for metadata and entry_point, imports the module, and registers each command (like 'generate_component') by mapping command name to the function in self.commands.

  def load_tools(self):
      if not os.path.isdir(self.tools_dir):
          return
      for tool_name in os.listdir(self.tools_dir):
          tool_path = os.path.join(self.tools_dir, tool_name)
          if not os.path.isdir(tool_path):
              continue
          mcp_json_path = os.path.join(tool_path, 'mcp.json')
          if not os.path.isfile(mcp_json_path):
              continue
          with open(mcp_json_path, 'r', encoding='utf-8') as f:
              meta = json.load(f)
          entry_point = meta.get('entry_point')
          if not entry_point:
              continue
          entry_path = os.path.join(tool_path, entry_point)
          if not os.path.isfile(entry_path):
              continue
          # Dynamically import the tool's entry point
          spec = importlib.util.spec_from_file_location(f"{tool_name}_module", entry_path)
          module = importlib.util.module_from_spec(spec)
          spec.loader.exec_module(module)
          # Register commands
          for cmd, cmd_meta in meta.get('commands', {}).items():
              if hasattr(module, cmd):
                  self.commands[cmd] = (tool_name, getattr(module, cmd))