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caveman-review

JuliusBrussee/caveman · updated Apr 18, 2026

$npx skills add https://github.com/JuliusBrussee/caveman --skill caveman-review
summary

### Caveman Code Review

  • Delivers ultra-compressed, actionable PR feedback using a strict L<line>: <problem>. <fix>. format to eliminate noise.
  • Uses severity prefixes like 🔴 bug, 🟡 risk, 🔵 nit, and ❓ q to categorize findings without unnecessary conversational filler.
  • Switches to verbose explanations only for critical security issues, architectural debates, or onboarding contexts.
skill.md

Write code review comments terse and actionable. One line per finding. Location, problem, fix. No throat-clearing.

Rules

Format: L<line>: <problem>. <fix>. — or <file>:L<line>: ... when reviewing multi-file diffs.

Severity prefix (optional, when mixed):

  • 🔴 bug: — broken behavior, will cause incident
  • 🟡 risk: — works but fragile (race, missing null check, swallowed error)
  • 🔵 nit: — style, naming, micro-optim. Author can ignore
  • ❓ q: — genuine question, not a suggestion

Drop:

  • "I noticed that...", "It seems like...", "You might want to consider..."
  • "This is just a suggestion but..." — use nit: instead
  • "Great work!", "Looks good overall but..." — say it once at the top, not per comment
  • Restating what the line does — the reviewer can read the diff
  • Hedging ("perhaps", "maybe", "I think") — if unsure use q:

Keep:

  • Exact line numbers
  • Exact symbol/function/variable names in backticks
  • Concrete fix, not "consider refactoring this"
  • The why if the fix isn't obvious from the problem statement

Examples

❌ "I noticed that on line 42 you're not checking if the user object is null before accessing the email property. This could potentially cause a crash if the user is not found in the database. You might want to add a null check here."

L42: 🔴 bug: user can be null after .find(). Add guard before .email.

❌ "It looks like this function is doing a lot of things and might benefit from being broken up into smaller functions for readability."

L88-140: 🔵 nit: 50-line fn does 4 things. Extract validate/normalize/persist.

❌ "Have you considered what happens if the API returns a 429? I think we should probably handle that case."

L23: 🟡 risk: no retry on 429. Wrap in withBackoff(3).

Auto-Clarity

Drop terse mode for: security findings (CVE-class bugs need full explanation + reference), architectural disagreements (need rationale, not just a one-liner), and onboarding contexts where the author is new and needs the "why". In those cases write a normal paragraph, then resume terse for the rest.

Boundaries

Reviews only — does not write the code fix, does not approve/request-changes, does not run linters. Output the comment(s) ready to paste into the PR. "stop caveman-review" or "normal mode": revert to verbose review style.

general reviews

Ratings

4.637 reviews
  • Diego Ndlovu· Dec 24, 2024

    I recommend caveman-review for anyone iterating fast on agent tooling; clear intent and a small, reviewable surface area.

  • Dev Perez· Dec 8, 2024

    Solid pick for teams standardizing on skills: caveman-review is focused, and the summary matches what you get after install.

  • Diya Dixit· Nov 27, 2024

    We added caveman-review from the explainx registry; install was straightforward and the SKILL.md answered most questions upfront.

  • Jin Desai· Nov 15, 2024

    Keeps context tight: caveman-review is the kind of skill you can hand to a new teammate without a long onboarding doc.

  • Jin Khanna· Oct 18, 2024

    caveman-review fits our agent workflows well — practical, well scoped, and easy to wire into existing repos.

  • Min Okafor· Oct 6, 2024

    caveman-review is among the better-maintained entries we tried; worth keeping pinned for repeat workflows.

  • Sakura Brown· Sep 13, 2024

    Keeps context tight: caveman-review is the kind of skill you can hand to a new teammate without a long onboarding doc.

  • Yash Thakker· Sep 9, 2024

    I recommend caveman-review for anyone iterating fast on agent tooling; clear intent and a small, reviewable surface area.

  • Dhruvi Jain· Aug 28, 2024

    Useful defaults in caveman-review — fewer surprises than typical one-off scripts, and it plays nicely with `npx skills` flows.

  • Li Anderson· Aug 4, 2024

    caveman-review is among the better-maintained entries we tried; worth keeping pinned for repeat workflows.

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