Build an Autonomous Code Review Bot with Claude Code Hooks + GitHub Actions

Source: Vikas Sah, cited in Medium Daily Digest of 2026-04-07 (Email 23). 16 min read, 17 claps.

Key takeaways

• Concrete buildable pattern: Claude Code Hooks + GitHub Actions = autonomous PR review bot.
• Directly applicable to CI pipelines at Harris / Constellation.
• Pair with GitHub Actions (existing Playbook reference) and the /ultrareview slash command that shipped with Opus 4.7.

Why this is worth an evening

16-minute read that ends with a working autonomous code review bot. For any Wraith / ACT / Centurion / NanoClaw maintenance, the same pattern can be deployed into CI. Expected output:

• Every PR gets reviewed automatically before a human looks at it
• Low-signal comments (style, lint) are auto-fixed
• High-signal comments (design, edge cases) are surfaced for human review
• Saves ~50% of code-review time on each PR

The composition

1. Hooks — fire on PR events (deterministic enforcement)
2. Claude Code Actions — run in CI
3. GitHub Actions — orchestration layer
4. Optional: Codex adversarial review — second opinion via Codex plugin

Related Playbook pages

• GitHub Actions — the existing Playbook reference
• Opus 4.7 — /ultrareview command
• I Ran Codex and Claude Side by Side — adversarial review pattern