Find bugs with ultrareview changedultrareview
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Upstream edited this page at 9 Oct 2026 01:16 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 9 Oct 2026 01:37 UTC.
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4646
4747### Review a pull request
4848
49To review a GitHub pull request instead of a local branch, pass the PR number:
49To review a pull request on `github.com` instead of a local branch, pass the PR number:
5050
5151```text theme={null}
5252/code-review ultra 1234
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5454
5555The command also accepts `#1234`, `PR 1234`, and pasted PR URLs; a pasted URL must point to the repository in your current directory.
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57In PR mode, the cloud sandbox clones the pull request directly from the host rather than bundling your local working tree. PR mode works with repositories on `github.com` and on [GitHub Enterprise Server](/docs/en/github-enterprise-server) instances that an Owner has connected to Claude Code.
57PR mode needs a repository on `github.com`. For a repository on a [GitHub Enterprise Server](/docs/en/github-enterprise-server) instance, run `/code-review ultra` without a PR number to review your local branch instead.
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59For repositories on `github.com`, the sandbox clones with the GitHub account connected to your Claude account, so the account must be able to read the PR's repository.
59In PR mode, the cloud sandbox clones the pull request from `github.com` instead of uploading your working tree. It uses the GitHub account connected to your Claude account, so that account needs read access to the repository.
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6161Run [`/web-setup`](/docs/en/web-quickstart#connect-from-your-terminal) to connect your GitHub CLI login to your Claude account.
6262
6363### Post findings to the pull request
6464
65On Claude Code v2.1.227 or later, when you review a pull request on `github.com`, you can have Claude post the finished findings to the PR as a single plain comment from your own GitHub account. The comment isn't a review or an approval, and it ends with a "Generated by Claude Code" note. When you review a branch or a GitHub Enterprise Server pull request, Claude Code shows the findings in your session only.
65On Claude Code v2.1.227 or later, when you review a pull request on `github.com`, you can have Claude post the finished findings to the PR as a single plain comment from your own GitHub account. The comment isn't a review or an approval, and it ends with a "Generated by Claude Code" note. When you review a branch, Claude Code shows the findings in your session only.
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6767Claude Code never posts unless you choose to on that run, and `--no-post` is the default. Posting is a choice you make for each run:
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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
9494<Tip>
95 If your repository is too large to bundle, Claude Code prompts you to use PR mode instead. Push your branch and open a draft PR, then run `/code-review ultra <PR-number>`.
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>`.
9696</Tip>
9797
9898### Diff limits and fallbacks
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151151claude ultrareview origin/main
152152```
153153
154Without arguments, the subcommand reviews the diff between your current branch and the default branch, with the same [whole-repository fallback](#diff-limits-and-fallbacks) as `/code-review ultra` when no merge base exists. Pass a PR number to review a pull request, or a base branch to review against it; [base-branch handling](#review-against-a-different-base) matches the interactive command.
154Without arguments, the subcommand reviews the diff between your current branch and the default branch, with the same [whole-repository fallback](#diff-limits-and-fallbacks) as `/code-review ultra` when no merge base exists. Pass a PR number to [review a pull request on `github.com`](#review-a-pull-request), or a base branch to review against it; [base-branch handling](#review-against-a-different-base) matches the interactive command.
155155
156156You consent to the whole-repository fallback and to the billing and terms prompt when you run the subcommand, so the run starts without waiting for input. Running it yourself is what counts as consent. When Claude runs the subcommand for you instead, for example through the Bash tool, Claude Code refuses the whole-repository review.
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