Stop conditions

Combine stop helpers to keep autonomous work inside application budgets.

agent = PhaseoAgentSdk.create_agent(
  id: "bounded-research",
  model: "openai/gpt-5.4-nano",
  stop_when: [
    PhaseoAgentSdk.step_count_is(12),
    PhaseoAgentSdk.max_tokens_used(40_000),
    PhaseoAgentSdk.max_cost(2.50),
    PhaseoAgentSdk.max_duration(120_000)
  ]
)

Tool-call and finish-reason conditions are also available. Inspect result.run.stop_reason and normalized usage after completion to distinguish a budget stop from a normal model finish. Stopping is a bounded outcome, not automatically an exception. Decide which reasons should be successful, retryable, or shown to the user.

Last modified on July 26, 2026

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