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HomeDocsClaude Code CLI 5 Oct 2026
One change · claude-code

Find bugs with ultrareview changedultrareview

Nearest release: v2.1.290, published an hour after 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 5 Oct 2026 17:12 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 5 Oct 2026 17:37 UTC.

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1414* **Broader coverage**: a larger fleet of reviewer agents explores the change in parallel, which surfaces issues that a local review can miss
1515* **No local resource use**: the review runs entirely in a cloud sandbox, so your terminal stays free for other work while it runs
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17Ultrareview requires authentication with a claude.ai account because it runs as a cloud session on Anthropic's infrastructure. If you are signed in with an API key only, run `/login` and authenticate with claude.ai first. Ultrareview is not available when using Claude Code with Amazon Bedrock, Google Cloud's Agent Platform, or Microsoft Foundry, and it is not available to organizations that have enabled Zero Data Retention. When ultrareview is not available, `/code-review ultra` runs a local review in your session instead.
17Ultrareview requires authentication with a claude.ai account because it runs as a cloud session on Anthropic's infrastructure. If you are signed in with an API key only, run `/login` and authenticate with claude.ai first. Ultrareview is not available when using Claude Code with Amazon Bedrock, Google Cloud's Agent Platform, or Microsoft Foundry, and it is not available to organizations that have enabled Zero Data Retention or have the [HIPAA configuration](/docs/en/hipaa-setup) applied. When ultrareview is not available, `/code-review ultra` runs a local review in your session instead.
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1919## Run ultrareview from the CLI
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