ClientCapabilities class

Client capabilities configuration

Annotations

• @immutable

Constructors

ClientCapabilities({bool roots = false, bool rootsListChanged = false, bool sampling = false, bool elicitation = false, Map<String, Map<String, dynamic>>? extensions})

Create a capabilities object with specified settings

const

ClientCapabilities.fromJson(Map<String, dynamic> json)

factory

Properties

elicitation → bool

Elicitation support — server can request user input via elicitation/create (spec 2025-06-18+).

final

extensions → Map<String, Map<String, dynamic>>?

Extensions framework (MCP 2026-07-28). Keys are reverse-DNS extension identifiers (e.g. io.modelcontextprotocol/tasks); values are per-extension settings (empty object = supported, no settings). Additive — absent/empty for peers that do not use extensions.

final

hashCode → int

The hash code for this object.

no setter, inherited

roots → bool

Root management support — server may request roots/list and the client responds with Client.roots.

final

rootsListChanged → bool

Whether roots list changes are sent as notifications

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

sampling → bool

Sampling support — host's LLM is reachable through this client (the server can ask for completions via sampling/createMessage).

final

Methods

hasExtension(String id) → bool

Whether this set advertises the extension id (reverse-DNS key).

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toJson() → Map<String, dynamic>

Convert capabilities to JSON

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited