Elasticsearch MCP Server

Instructions

        Returns information (mappings, settings, aliases) about one or more indices.
        
        Args:
            index: Name of the index
        

Implementation Reference

• src/tools/index.py:15-24 (handler)

  MCP tool handler for 'get_index'. Decorated with @mcp.tool(), it takes an index name and delegates to the search_client's get_index method to retrieve index information.

  @mcp.tool()
  def get_index(index: str) -> Dict:
      """
      Returns information (mappings, settings, aliases) about one or more indices.
      
      Args:
          index: Name of the index
      """
      return self.search_client.get_index(index=index)

• src/tools/index.py:9-44 (registration)

  IndexTools.register_tools method registers all index-related MCP tools, including 'get_index', by defining them with @mcp.tool() decorators.

  def register_tools(self, mcp: FastMCP):
      @mcp.tool()
      def list_indices() -> List[Dict]:
          """List all indices."""
          return self.search_client.list_indices()
  
      @mcp.tool()
      def get_index(index: str) -> Dict:
          """
          Returns information (mappings, settings, aliases) about one or more indices.
          
          Args:
              index: Name of the index
          """
          return self.search_client.get_index(index=index)
  
      @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)
  
      @mcp.tool()
      def delete_index(index: str) -> Dict:
          """
          Delete an index.
          
          Args:
              index: Name of the index
          """
          return self.search_client.delete_index(index=index)

• src/clients/common/index.py:10-13 (helper)

  Helper method in IndexClient that implements the core logic for retrieving index information by calling the underlying client's indices.get() method.

  def get_index(self, index: str) -> Dict:
      """Returns information (mappings, settings, aliases) about one or more indices."""
      return self.client.indices.get(index=index)