Follow Discord
Sweep 22 Oct 2026 · 04:32Z Build v2.1.308 527 read Stable v2.1.308 Latest v2.1.308 Next v2.1.308 Feeds RSS JSON llms.txt llms-full.txt Unofficial
HomeDocsClaude Code CLI 15 Oct 2026
One change · claude-code

Find bugs with ultrareview changedultrareview

Nearest release: v2.1.301, published 4 hours 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 15 Oct 2026 19:23 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 20 Oct 2026 18:37 UTC.

Upstream edited
Recorded here
Lines+6added
Lines−6removed
From line 2 where the diff opens
First seen 14 Aug 2026 this site's first read of the page
Recorded edits20to this page, all time

The whole hunk

from line 2, old and new numbered
/
lines
from line 2
22 
33> Run a deep, multi-agent code review in the cloud with /code-review ultra to find and verify bugs before you merge.
44 
5<Note>
6 Ultrareview is a research preview feature. The feature, pricing, and availability may change based on feedback. The command is `/code-review ultra`. When ultrareview is available to your account, `/ultrareview` is an alias.
7</Note>
5> [!NOTE]
6>
7> Ultrareview is a research preview feature. The feature, pricing, and availability may change based on feedback. The command is `/code-review ultra`. When ultrareview is available to your account, `/ultrareview` is an alias.
88 
99Ultrareview is a deep code review that runs as a [cloud session](/docs/en/claude-code-on-the-web) on Anthropic's infrastructure. When you run `/code-review ultra`, Claude Code launches a fleet of reviewer agents in a cloud sandbox to find bugs in your branch or pull request.
1010 
from line 91
9191 
9292Claude Code treats your text as a note only when it has more than one word and isn't a branch name or PR reference. It reads a single word as a branch name or PR reference, so a mistyped branch name gets the closest-branch error from [Review against a different base](#review-against-a-different-base) instead of launching with a note. If your text combines a PR reference with other words, such as `check PR 123 again`, Claude Code doesn't launch either; it asks you to rerun with the PR number alone to review that PR, or without the reference to review your current branch.
9393 
94<Tip>
95 If your repository is too large to bundle, Claude Code prompts you to use PR mode instead. For a repository on `github.com`, push your branch and open a draft PR, then run `/code-review ultra <PR-number>`.
96</Tip>
94> [!TIP]
95>
96> If your repository is too large to bundle, Claude Code prompts you to use PR mode instead. For a repository on `github.com`, push your branch and open a draft PR, then run `/code-review ultra <PR-number>`.
9797 
9898### Diff limits and fallbacks
9999 
Feedback