1: <?php
2:
3: declare(strict_types=1);
4:
5: /**
6: * This file is part of the Nexus MCP SDK package.
7: *
8: * (c) 2026 John Paul E. Balandan, CPA <paulbalandan@gmail.com>
9: *
10: * For the full copyright and license information, please view
11: * the LICENSE file that was distributed with this source code.
12: */
13:
14: namespace Nexus\Mcp\Server;
15:
16: /**
17: * A store whose listing can change after `build()`, and which reports each change to its listeners.
18: *
19: * The store names no notification type. Which `notifications/*\/list_changed` a change becomes is fixed
20: * by the feature the listener registered on.
21: */
22: interface ListChangeSourceInterface
23: {
24: /**
25: * Registers a listener invoked once per change to the entries this store lists.
26: *
27: * @param \Closure(): void $listener
28: */
29: public function onListChanged(\Closure $listener): void;
30: }
31: