CallToolResult class

Tool call result.

Spec 2025-06-18 added structuredContent (optional JSON object that pairs with Tool.outputSchema). Tools returning structured content SHOULD also include the serialized JSON in a TextContent block for backward compatibility with clients that don't read structuredContent.

Constructors

CallToolResult({required List<Content> content, Map<String, dynamic>? structuredContent, @Deprecated('See CallToolResult.isStreaming — removed in 3.0.') bool isStreaming = false, bool? isError})

const

Properties

content → List<Content>

final

hashCode → int

The hash code for this object.

no setter, inherited

isError → bool?

final

isStreaming → bool

NON-STANDARD (makemind) legacy hint. Not part of the MCP CallToolResult spec and honored nowhere (the transport closes a tool-call stream on the final result regardless of this flag). The standard pattern is: enable streaming with a tool (tools/call) and deliver the stream via a reactive resource (subscriptions/listen on 2026-07-28, resources/ subscribe on ≤2025-11-25). Retained + still serialized for backward compatibility; slated for removal in the next major (3.0).

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

structuredContent → Map<String, dynamic>?

final

Methods

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