ClientNotification class sealed

This notification is sent by the client to indicate that it is cancelling a request it previously issued.

On stdio, the server also sends this notification, solely to terminate a SubscriptionsListenRequestsubscriptions/listen stream: it references the ID of the subscriptions/listen request that opened the stream. Servers MUST NOT use this notification to cancel any other request.

The request SHOULD still be in-flight, but due to communication latency, it is always possible that this notification MAY arrive after the request has already finished.

This notification indicates that the result will be unused, so any associated processing SHOULD cease.

Revisions: 2024-11-05, 2025-03-26, 2025-06-18, 2025-11-25, 2026-07-28.

Implemented types

• McpJson

Constructors

ClientNotification.fromJson(Map<String, Object?> json)

Reads the branch json names; an unrecognised one is kept as UnknownClientNotification.

factory

Properties

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toJson() → Map<String, Object?>

The JSON form of this value.

override

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited