CreateMessageRequest

Parameters of a sampling/createMessage request the server sends to the client. Build one, call toJson, and pass it to RequestContext.sample.

@safe

struct CreateMessageRequest {

SamplingMessage[] messages;

ModelPreferences modelPreferences;

Nullable!string systemPrompt;

Nullable!string includeContext;

Nullable!double temperature;

Nullable!long maxTokens;

string[] stopSequences;

Json metadata;

Tool[] tools;

ToolChoice toolChoice;

}

Members

Variables

includeContext Nullable!string includeContext;: "none" | "thisServer" | "allServers"
metadata Json metadata;: opaque provider-specific metadata
toolChoice ToolChoice toolChoice;: optional tool-choice mode; omitted when unset
tools Tool[] tools;: tools the model may call during sampling (2025-11-25 / draft)

mcp protocol sampling enums

StopReason

functions

structs