Ultrareview runs parallel reviewer agents on your branch or PR in a remote cloud sandbox, independently verifying each bug before reporting it. For Claude Code users on Pro or Max plans.

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A single-pass code review, automated or manual, can only catch what one pass catches. Ultrareview takes a different approach.

It is a /ultrareview command for Claude Code that spins up a fleet of reviewer agents in a remote cloud sandbox, runs them in parallel across your diff, and independently verifies each finding before reporting it. The result is a short list of confirmed bugs rather than a long list of suggestions to triage.

The workflow is non-blocking by design. You confirm the review scope in a dialog, the agents run in the background, and findings come back as a notification in your CLI session when complete. Typically 10 to 20 minutes. You can close the terminal and it keeps running.

Key features:

Multi-agent parallel exploration of the diff
Independent reproduction step cuts false positives before findings land
Remote sandbox keeps your local session free during the review
PR mode pulls directly from GitHub, no local bundling required
Each finding includes file location and fix context

Who it's for: Claude Code users on Pro or Max plans, specifically before merging substantial changes where a missed bug is expensive. Auth flows, schema migrations, critical refactors.

Research preview, available in Claude Code v2.1.86 and later. Pro and Max users each get 3 free runs to try it.

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been doing this manually — agent reviews, second agent verifies its findings, sometimes a third when something looks uncertain. you get closer to correct, but you're rebuilding the same scaffolding on every pr. does it actually catch what the third pass was catching?