[HN]score: 0.33

Greptile's TREX Code Reviewer Executes Code to Catch Runtime Bugs in PRs

June 17, 2026

TREX adds an execution layer to AI code review, actually running code from pull requests to surface runtime bugs — race conditions, state-dependent logic errors, UI regressions — that static diff analysis misses. Built by Greptile, it extends their existing PR review product.

HOW THIS AFFECTS YOU

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builderYou can now get AI code review that catches runtime and state-dependent bugs, not just static issues — worth evaluating if your team ships logic-heavy or async code.

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founderExecution-layer code review is a meaningful product differentiation from static AI reviewers; signals where the code review tool category is heading next.

read original ↗greptile.com

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