Ultrareview is a /ultrareview command for Claude Code that deploys a fleet of parallel reviewer agents in a remote cloud sandbox to analyze code diffs. Unlike single-pass reviews, it independently verifies each finding before reporting, reducing false positives and delivering a short list of confirmed bugs. The workflow is non-blocking — agents run in the background while you continue working, with results delivered as a CLI notification in 10–20 minutes. It supports PR mode via GitHub integration and is available as a research preview in Claude Code v2.1.86+ for Pro and Max plan users, with 3 free runs included.
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