toolExecution

UDA declaring a @tool-annotated method's per-tool task-augmented execution support (the MCP 2025-11-25 Tool.execution descriptor). Attach alongside @tool; taskSupport must be "optional" or "required". Using "forbidden" (or omitting this UDA entirely) leaves the execution field absent from the wire form — both are equivalent to the spec default.

@safe

struct toolExecution {

string taskSupport;

}

Members

Variables

taskSupport string taskSupport;: "optional" | "required" (or "forbidden" as a no-op self-documenting marker)

Examples

@tool("render", "Render a long report")
@toolExecution("optional")
string render(string spec) { ... }