OpenSearch MCP Server

Instructions

Implementation Reference

• src/opensearch_mcp_server/tools/index.py:43-57 (handler)

  The get_settings tool handler: decorated with @mcp.tool for registration and implements the logic to retrieve OpenSearch index settings using the client, handling errors.

  @mcp.tool(description="Get index settings")
  async def get_settings(index: str) -> list[TextContent]:
      """
      Get the settings for an index.
      
      Args:
          index: Name of the index
      """
      self.logger.info(f"Getting settings for index: {index}")
      try:
          response = self.es_client.indices.get_settings(index=index, h=["index", "health"])
          return [TextContent(type="text", text=str(response))]
      except Exception as e:
          self.logger.error(f"Error getting settings: {e}")
          return [TextContent(type="text", text=f"Error: {str(e)}")]

• src/opensearch_mcp_server/server.py:36-36 (registration)

  Invocation of register_tools on IndexTools instance, which defines and registers the get_settings tool among others.

  index_tools.register_tools(self.mcp)