Module notifications 

MCP Notifications Protocol Types

This module defines types for notifications in MCP according to the 2025-06-18 specification. MCP notifications are JSON-RPC notifications that inform clients about server state changes.

Structs

CancelledNotification

Method: “notifications/cancelled”

CancelledNotificationParams

InitializedNotification

Method: “notifications/initialized”

LoggingMessageNotification

Method: “notifications/message”

LoggingMessageNotificationParams

Notification

Base notification structure following MCP TypeScript specification

NotificationParams

Base notification parameters that can include _meta

ProgressNotification

Method: “notifications/progress”

ProgressNotificationParams

PromptListChangedNotification

Method: “notifications/prompts/listChanged” (per MCP spec)

ResourceListChangedNotification

Method: “notifications/resources/listChanged” (per MCP spec)

ResourceUpdatedNotification

Method: “notifications/resources/updated”

ResourceUpdatedNotificationParams

RootsListChangedNotification

Method: “notifications/roots/listChanged” (per MCP spec)

ToolListChangedNotification

Method: “notifications/tools/listChanged” (per MCP spec)

Traits

HasNotificationMetadata

Trait for notification metadata (method, type info)

HasNotificationPayload

Trait for notification payload and data structure

HasNotificationRules

Trait for notification delivery rules and filtering

NotificationDefinition

Complete MCP Notification Creation - Build real-time event broadcasting systems.