Escalate hard decisions with the advisor tool changedadvisor
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Upstream edited this page at 21 Oct 2026 01:33 UTC, give or take a minute or two: the time comes from Anthropic’s own sitemap rather than from a commit. This site recorded the change at 21 Oct 2026 01:37 UTC.
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8080If you start a [background session](/docs/en/agent-view) with `--advisor` and one of these applies, Claude Code starts the session without the advisor instead of exiting.
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82If the requested model can act as an advisor but [ranks below](#choose-an-advisor-model) the session's main model, Claude Code starts the session anyway. Outside background sessions, it also warns at launch that the model `cannot advise` the main model.
82If the model you pass can act as an advisor but [ranks below your main model](#choose-an-advisor-model), the session starts whether or not it's a background session. Your main model then runs without the advisor.
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8484## Choose an advisor model
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