True when this request is on a stateless (MRTR) protocol — the draft
revision, where there is no server->client channel. On such requests a
tool handler must NOT call elicit/sample (they throw); instead it
returns ToolResponse.inputRequired(...) and reads the client's answers
from inputResponses on the retried request. False on 2025-era requests.
True when this request is on a stateless (MRTR) protocol — the draft revision, where there is no server->client channel. On such requests a tool handler must NOT call elicit/sample (they throw); instead it returns ToolResponse.inputRequired(...) and reads the client's answers from inputResponses on the retried request. False on 2025-era requests.