Review

juliusbrussee/cavekit/skills/review

by juliusbrussee7421e87d5b51No license1.1K starsListed Oct 8, 2026Updated Oct 8, 2026Repository updated 7 weeks ago

Adversarial senior review of the spec before any code is written. Constructs a skeptical reviewer whose authority comes from the codebase, §R research, and live best-practice — then tries to REFUTE the spec, not rubber-stamp it. Every finding cites evidence (file:line or source); unverifiable ones are flagged. Survivors harden §V; the run ends in an explicit go / no-go gate. Triggers before building anything high-blast-radius, when the user says "review the spec", "red-team this", "is this plan sound", "senior review", or invokes /ck:review.

Instructions onlySoftware Development
AI-generated overview

Adversarially reviews a written spec before implementation, citing evidence and ending in a go/no-go gate.

What it does
This skill runs an adversarial senior review of a specification before any code is written. It constructs a skeptical reviewer grounded in the codebase, prior research, and current best practice, then attempts to refute the spec across axes such as goal versus reality, missing invariants, interface drift, constraint conflicts, unowned edge cases, and altitude. Findings are classified as BLOCK, HARDEN, or NOTE, each with evidence, and the run ends with an explicit go or no-go verdict plus drafted hardening test lines.
When to use it
Use it before building a high-blast-radius change such as a shared module, authentication, data, money, or public API work. It also fits when a spec touches interfaces or invariants other code depends on, or when the cost of a wrong build exceeds the cost of one review pass. It should be skipped for trivial, reversible, well-understood changes.
Requirements
Instructions only; no scripts are shipped. It expects a written spec with sections such as goals, constraints, interfaces, research, invariants, and tests, and it may read codebase files and fetch external sources to verify best-practice claims.

review — refute the spec before build

Every finding cites evidence — file:line or a source. No evidence → flag [unverified]. Default to refuted: a flaw you cannot prove is a flaw you note, not one you wave through.

An LLM cannot self-correct on its own judgment — left alone it drifts or degrades. Review fixes that the only way that works: a separate skeptic anchored to an external oracle — the code, §R, the test suite, the docs. "Looks good" is not a review. A refutation attempt is.

WHEN TO REVIEW

  • Before /build on a high-blast-radius change (shared module, auth, data, money, public API).
  • Spec touched §I or §V that other code depends on.
  • Right-sizing says the cost of a wrong build > the cost of one review pass.

Skip for a trivial, reversible, well-understood change. Adversarial review on a typo hallucinates flaws & wastes the budget — the self-critique paradox is real.

PHASE 0 — CAPTURE

Read the spec: §G §C §I §R §V §T. Hold the whole thing. You review the spec, not your memory of the conversation.

PHASE 1 — CONSTRUCT THE SENIOR

Build a reviewer with real authority, not a generic critic:

  • Codebase — grep/read the modules this spec touches. What patterns, what invariants already hold?
  • §R — what did research establish? A spec decision that contradicts §R is a finding.
  • Live — for any best-practice claim you are unsure of, fetch it. An out-of-date assumption is a flaw.

A reviewer with no evidence is just an opinion. Earn the authority first.

PHASE 2 — REFUTE

Attack the spec on these axes. For each, try to find the case where it breaks:

  • Goal vs reality — does §G solve the actual problem, or a proxy?
  • Missing invariant — what can go wrong that no §V catches? (most findings live here)
  • Interface drift — does §I match what callers already expect? (cite the caller, file:line)
  • Constraint conflict — do two §C bullets contradict? does one fight §R?
  • Unowned edge — the input, ordering, failure, or concurrency case no §T covers.
  • Altitude — §T too vague to act on, or so granular it is just typing?

PHASE 3 — CLASSIFY

Each finding: evidence → claim → severity.

  • BLOCK — build on this spec ships a real defect. Must fix first.
  • HARDEN — add/sharpen a §V so the build cannot regress it.
  • NOTE — worth knowing, not blocking.

No evidence? Down-rank to NOTE & tag [unverified]. ⊥ inflate a hunch to BLOCK.

PHASE 4 — HARDEN §V & GATE

  • Each HARDEN finding → a draft §V line (testable, cites the §I/behavior it guards). Hand to spec to write.
  • End on an explicit gate:
## review verdictBLOCK: 1 — §I.api shape ≠ caller src/client.ts:40. fix §I before build.HARDEN: 2 — drafted V8 (idempotent refund), V9 (tx around dual write).NOTE: 1 — §T4 vague, split before /build.gate: NO-GO until BLOCK cleared. then /build §T after spec writes V8,V9.

GO or NO-GO, never a shrug. Review is the checkpoint that stops a confident wrong build.

BOUNDARIES

  • ⊥ write SPEC.md. Draft §V & hand to spec.
  • ⊥ pass a finding with no evidence as fact. Flag [unverified].
  • ⊥ review trivia. Right-size or skip.
  • ⊥ rewrite the user's intent. You harden the spec, you do not replace its goal.

Source and attribution

Source:juliusbrussee/cavekitinskills/reviewat commit7421e87

License: No license

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