Dynamic Registration

Most tools are declared with @Tool, but some only exist at runtime, such as one tool per table in a database the server discovers at startup. You can register those programmatically.

NitroStack supports dynamic tool registration and notifies connected clients when the tool list changes.

List Changed Notifications

When tools are added or removed at runtime, the server automatically sends a notifications/tools/list_changed notification to all connected clients. This enables dynamic tool discovery.

import { McpApplicationFactory } from '@nitrostack/core';

// Access the server instance
const app = await McpApplicationFactory.create(AppModule);
const server = app.getServer();

// Notify clients after dynamic changes
server.notifyToolsListChanged();

Use Cases for Dynamic Tools

1. Feature flags: Enable/disable tools based on configuration
2. Permission-based: Show different tools based on user roles
3. Plugin systems: Load tools from external modules
4. A/B testing: Expose different tool sets to different clients

Next steps