Sweep 22 Sep 2026 · 17:19Z Build v2.1.280 501 read Stable v2.1.267 Latest v2.1.280 Next v2.1.280 Feeds RSS JSON llms.txt Unofficial
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Escalate hard decisions with the advisor tool changed

advisor

Nearest release: v2.1.280, published an hour before upstream edited the page. Shown because the two are within 24 hours of each other. Nothing here says the release caused the edit.

Upstream edited this page at 22 Sep 2026 17:28 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 22 Sep 2026 17:37 UTC.

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168168The advisor tool requires all of the following:
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170* **Anthropic API only**: the advisor is a server-executed tool. It is not available on Amazon Bedrock, Claude Platform on AWS, Google Cloud's Agent Platform, or Microsoft Foundry. Through an [LLM gateway](/docs/en/llm-gateway) configured with `ANTHROPIC_BASE_URL`, availability depends on whether the gateway forwards the request intact to the Anthropic API.
170* **Anthropic API only**: the advisor is a server-executed tool. It is not available on Amazon Bedrock, Claude Platform on AWS, Google Cloud's Agent Platform, or Microsoft Foundry. Through an [LLM gateway](/docs/en/llm-gateway) configured with `ANTHROPIC_BASE_URL`, availability depends on whether the gateway forwards the request intact to the Anthropic API. If the gateway or its upstream doesn't recognize the advisor tool, see [Automatic retry and error forwarding](/docs/en/llm-gateway-protocol#automatic-retry-and-error-forwarding) for how Claude Code responds.
171171* **Supported main model**: Fable, Opus 4.6 or later, Sonnet 4.6 or later, or Haiku 4.5. See [Choose an advisor model](#choose-an-advisor-model) for which advisors each accepts.
172172* **Feature-flag fetching**: Claude Code turns the advisor on through a feature flag it fetches from Anthropic. In a session where a variable that turns flag fetching off is set, such as `DISABLE_TELEMETRY`, the advisor stays off. See [Features that need feature-flag fetching](/docs/en/env-vars#features-that-need-feature-flag-fetching).
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