McpRequestMeta class

Reverse-DNS _meta key constants and typed accessors for the stateless core. All keys sit under the reserved io.modelcontextprotocol/ prefix.

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

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited

Static Methods

build({required String protocolVersion, required Map<String, dynamic> clientCapabilities, Map<String, dynamic>? clientInfo, String? logLevel, Map<String, dynamic>? extra}) → Map<String, dynamic>

Build a request _meta object carrying the reverse-DNS stateless keys.

buildResult({required Map<String, dynamic> serverInfo, Map<String, dynamic>? extra}) → Map<String, dynamic>

Build a result _meta object carrying serverInfo, merging extra first so the reserved key wins. Returns a fresh map.

readClientCapabilities(Object? meta) → Map<String, dynamic>?

Read io.modelcontextprotocol/clientCapabilities from a request _meta. Returns null when absent (distinct from an empty object).

readClientInfo(Object? meta) → Map<String, dynamic>?

Read io.modelcontextprotocol/clientInfo from a request _meta.

readLogLevel(Object? meta) → String?

Read io.modelcontextprotocol/logLevel from a request _meta.

readProtocolVersion(Object? meta) → String?

Read io.modelcontextprotocol/protocolVersion from a request _meta.

readServerInfo(Object? meta) → Map<String, dynamic>?

Read io.modelcontextprotocol/serverInfo from a result _meta.

readSubscriptionId(Object? meta) → Object?

Read io.modelcontextprotocol/subscriptionId from a notification _meta.

Constants

keyClientCapabilities → const String

RequestMetaObject."io.modelcontextprotocol/clientCapabilities" — the client's capabilities FOR THIS REQUEST (REQUIRED on the stateless path). An empty object means no optional capabilities.

keyClientInfo → const String

RequestMetaObject."io.modelcontextprotocol/clientInfo" — self-reported client software identity (name+version). Display/logging only.

keyLogLevel → const String

RequestMetaObject."io.modelcontextprotocol/logLevel" — the per-request desired log level (replaces the logging/setLevel RPC). Optional.

keyProtocolVersion → const String

RequestMetaObject."io.modelcontextprotocol/protocolVersion" — the MCP protocol version for this request (REQUIRED on the stateless path). For HTTP it MUST equal the MCP-Protocol-Version header.

keyServerInfo → const String

ResultMetaObject."io.modelcontextprotocol/serverInfo" — self-reported server software identity carried on a response _meta.

keySubscriptionId → const String

NotificationMetaObject."io.modelcontextprotocol/subscriptionId" — the JSON-RPC id of the subscriptions/listen request whose stream carried this notification (also on SubscriptionsListenResult._meta). Absent on non-subscription notifications.