OptionalmaxOptionalstoreDefault: a MemoryStore private to this session.
OptionalsummarizeReplace dropped turns with one model-written summary (asks the agent's model). Default: false, dropped turns are gone.
OptionaltoolLongest a tool result stays once the budget is hit (chars). Default 400.
Prompt budget in tokens. Oldest turns go first; tool results are shortened before anything is dropped. Default: unlimited.