ServerCapabilities class

What this server advertises in capabilities (initialize result and server/discover). Only the keys the schema's ServerCapabilities defines are sent.

Annotations
  • @immutable

Constructors

ServerCapabilities({ToolsCapability? tools, ResourcesCapability? resources, PromptsCapability? prompts, LoggingCapability? logging, CompletionsCapability? completions, Map<String, Map<String, dynamic>>? experimental, Map<String, dynamic>? tasks, Map<String, Map<String, dynamic>>? extensions})
const
ServerCapabilities.simple({bool tools = false, bool toolsListChanged = false, bool resources = false, bool resourcesSubscribe = false, bool resourcesListChanged = false, bool prompts = false, bool promptsListChanged = false, bool logging = false, bool completions = false})
A capability set from boolean flags.
factory

Properties

completions → CompletionsCapability?
Argument autocompletion (completion/complete).
final
experimental → Map<String, Map<String, dynamic>>?
Non-standard experimental features, by name.
final
extensions → Map<String, Map<String, dynamic>>?
Extensions framework (MCP 2026-07-28). Keys are reverse-DNS extension identifiers (e.g. io.modelcontextprotocol/tasks, following the _meta key naming rules with a mandatory prefix); values are per-extension settings objects (an empty object = supported with no settings).
final
hasCompletions → bool
no setter
hashCode → int
The hash code for this object.
no setterinherited
hasLogging → bool
no setter
hasPrompts → bool
no setter
hasResources → bool
no setter
hasTools → bool
no setter
logging → LoggingCapability?
Log message notifications.
final
prompts → PromptsCapability?
Prompts (prompts/list, prompts/get).
final
promptsListChanged → bool
no setter
resources → ResourcesCapability?
Resources (resources/list, resources/read, …).
final
resourcesListChanged → bool
no setter
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
tasks → Map<String, dynamic>?
Task-augmented requests (2025-11-25 core tasks), as the schema's ServerCapabilities.tasks object (list, cancel, requests).
final
tools → ToolsCapability?
Tools (tools/list, tools/call).
final
toolsListChanged → bool
no setter

Methods

hasExtension(String id) → bool
Whether this capability set advertises the extension id (reverse-DNS key), e.g. io.modelcontextprotocol/tasks.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toJson() → Map<String, dynamic>
toString() → String
A string representation of this object.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited