BugZero

bugzero connects to GitHub and Sentry via OAuth and a GitHub App, then sits in the path between a firing Sentry alert and your repository. When an error hits, the agent reads the stacktrace, traverses the codebase to locate root cause, and opens a pull request containing the fix, a diff, and an explanation of what went wrong. Nothing merges automatically — the PR waits for your review.

The standout feature is dry-run mode. Before committing to a pull request, the agent runs the analysis and shows you exactly what it would change without touching the repo. For teams skeptical about automated fixes landing in main, dry-run lets you calibrate trust before enabling the full autonomous flow — you see the reasoning, reject or accept, and only then let the PR generate.

The tool fits cleanly into teams already running Sentry plus GitHub as their core error-monitoring and version-control stack. Language support is not a constraint the vendor imposes: because the agent reads code rather than executes it, the docs describe it as language-agnostic. The ceiling appears on errors that require judgment beyond a single file or function — architectural bugs, race conditions that only reproduce under specific load, or problems that span services. The agent’s fine-grained GitHub App permissions mean it reads only the files relevant to the specific error, which is a security boundary that also caps how far it can reason across a large system.

Setup is scoped to roughly two minutes per the vendor — OAuth for Sentry, a GitHub App install, no webhook configuration. Runs are metered; the free tier provides three total, and all paid tiers require you to bring your own API key, so model inference costs are billed directly to your account rather than bundled into the subscription.