Session
A bounded period of interaction that accumulates messages, results, and working state.
Illustrative conversation
- Why did the assistant remember the last tool result after I reopened the conversation?
- The session store restored that conversation history before the next run.
Definition
A session is the application-level record that connects multiple agent runs or conversation turns. A session store can reload earlier messages, assistant responses, and tool activity before the next run, letting the interaction continue without manually rebuilding its history. What a session retains, for how long, and what it actually replays are harness choices. A message visible in the session UI is not proof that it remains in the current model input.
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