Termination conditions

Audience: authors bounding cost, time, and unsafe open-ended delegation.

Prerequisites

Set a meaningful max_turns and decide which completion signal is safe for the business operation before selecting an additional termination condition.

Use MaxMessageTermination, StopMessageTermination, TextMentionTermination, or TokenUsageTermination to bound agent execution. Conditions compose with & and |; pair them with max_turns for defense in depth.

Stop a live execution through AgentHandle or AgentClient.stop(). A stop should be safe to repeat and must not assume an in-flight external tool call is reversible.

Expected result and failures

A terminal condition ends the durable execution with its recorded reason. If a tool has already started, stopping the agent does not undo its external side effect; design compensating work where necessary.

Next steps

Continue with multi-agent, reliability, and agent client control.