Elasticsearch MCP Server

Instructions

        Create a new index.
        
        Args:
            index: Name of the index
            body: Optional index configuration including mappings and settings
        

Implementation Reference

• src/tools/index.py:25-34 (handler)

  The MCP tool handler for 'create_index', decorated with @mcp.tool(). It creates a new index by calling the search client's create_index method.

  @mcp.tool()
  def create_index(index: str, body: Optional[Dict] = None) -> Dict:
      """
      Create a new index.
      
      Args:
          index: Name of the index
          body: Optional index configuration including mappings and settings
      """
      return self.search_client.create_index(index=index, body=body)

• src/server.py:41-53 (registration)

  Top-level registration where IndexTools (containing create_index) is included in tool_classes and registered via ToolsRegister.

  register = ToolsRegister(self.logger, self.search_client, self.mcp)
  
  # Define all tool classes to register
  tool_classes = [
      IndexTools,
      DocumentTools,
      ClusterTools,
      AliasTools,
      DataStreamTools,
      GeneralTools,
  ]        
  # Register all tools
  register.register_all_tools(tool_classes)

• src/clients/common/index.py:14-16 (helper)

  Helper method in IndexClient that implements the low-level index creation delegated by the MCP tool handler.

  def create_index(self, index: str, body: Optional[Dict] = None) -> Dict:
      """Creates an index with optional settings and mappings."""
      return self.client.indices.create(index=index, body=body)

• src/tools/index.py:9-10 (registration)

  IndexTools.register_tools method where the @mcp.tool() decorators register the create_index tool (and others) with the MCP instance.

  def register_tools(self, mcp: FastMCP):
      @mcp.tool()