Stop conditions

MaxSteps is a useful safety net. StopWhen adds composable product limits that are evaluated as the run progresses.

agent := phaseoagent.CreateAgent(phaseoagent.AgentDefinition{
  ID: "bounded-research",
  Model: "openai/gpt-5.4-nano",
  StopWhen: []phaseoagent.StopCondition{
    phaseoagent.StepCountIs(12),
    phaseoagent.MaxTokensUsed(40_000),
    phaseoagent.MaxCost(2.50),
    phaseoagent.MaxDuration(2 * time.Minute),
  },
})

Other helpers include HasToolCall("publish_report") and FinishReasonIs("content_filter"). You can also provide a custom StopCondition when the decision depends on application context. When a condition matches, inspect result.Run.StopReason, the normalized usage totals, and the last completed step. Stopping is a successful bounded outcome unless your application chooses to treat that reason as an error.

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