small fixes

internal/llm/agent/mcp-tools.go

@@ -58,7 +58,7 @@ func runTool(ctx context.Context, c MCPClient, toolName string, input string) (t
 	toolRequest := mcp.CallToolRequest{}
 	toolRequest.Params.Name = toolName
 	var args map[string]any
-	if err = json.Unmarshal([]byte(input), &input); err != nil {
+	if err = json.Unmarshal([]byte(input), &args); err != nil {
 		return tools.NewTextErrorResponse(fmt.Sprintf("error parsing parameters: %s", err)), nil
 	}
 	toolRequest.Params.Arguments = args