# Code Review > Review code or repository changes ruthlessly for bugs, quality regressions, objective fit, proof validity, maintainability, changed state, and final repo health. Use when the user asks for review or before claiming non-trivial work complete. Use this skill for always-on review doctrine, findings, and verdicts only; role prompts and handoffs own reference selection. Use when this capability is needed. - Skill: `tomevault-io/code-review-149` (Agent Skill, multi-file: 2 files) - Install (CLI): `npx skillmds@latest add tomevault-io/code-review-149` - Raw SKILL.md: https://api.skillmd.com/api/skills/tomevault-io/code-review-149/raw - Safety review: pending (external: skill-scanner PASS, skillspector PASS) - Works with: Claude Code, Claude.ai, OpenAI Codex - Category: AI & ML - Author: tomevault-io (https://skillmd.com/u/tomevault-io) - Updated: 2026-09-17 - Page: https://skillmd.com/skills/tomevault-io/code-review-149 --- # Code Review Owns always-on review doctrine, finding standards, and report shape. `../solution-shaping/SKILL.md` owns review timing, the binding objective, valid slice shape, and whether a finding changes scope. `../verify-work/SKILL.md` owns proof selection. Reviewers may reject invalid proof; they do not replace runtime, design, security, or test owners. ## Contract Review is a blocking gate, not encouragement. A reviewer is expected to falsify the parent story and find real defects. Plans, work state, summaries, previous approvals, and parent claims are hypotheses. Code, owner docs, tests, runtime topology, data shape, diffs, proof artifacts, and repository state are evidence. For non-trivial work, approval is binary: every reference selected by the caller, role prompt, or handoff must be applied deeply enough for the claim. If required context is skipped, uncertain, or impossible from available context, return `BLOCKED` or `BLOCK`, not approval. Valid verdicts: - `APPROVE`: the selected review scope passed, with no unresolved current-scope findings. - `BLOCK`: the review found an actionable current-scope issue, invalid proof, incomplete objective coverage, or unclassified material finding. - `BLOCKED`: required authority, context, changed surface, proof artifacts, or repo access is missing, so the reviewer cannot honestly judge the claim. Diff-only approval is invalid for non-trivial work. Plan-compliance approval is invalid. Test-pass approval is invalid. ## Always-On Review Setup Before trusting the diff or parent story, independently reconstruct from repo evidence: - binding objective and user-accepted reductions - expected finished repo state that would make the objective true - atomic claims or objective coverage units in the reviewed scope - owner/interface, lifecycle, state authority, failure policy, and proof route - inspected authority: owner docs, code paths, runtime topology, data/state shape, tests, changed surface, adjacent paths, and proof artifacts - plan/note interpretation verdict - known findings, finding dispositions, accepted temporary debt, and residual work Do not inherit the finished state from the diff, branch history, backlog wording, PR status, previous completion claims, or parent handoff. An internally consistent plan that implements the wrong shape is `BLOCK`. Use `../solution-shaping/SKILL.md` and its review lenses for non-trivial review. Unassessed current-scope lens impact blocks approval. ## Convergence After independent reconstruction, compare against the parent plan, implementation, proof, and final claim. Convergence verdicts: - `converged`: objective, target shape, atomic claims, proof route, and cleanup disposition match repo evidence. - `converged with non-material deltas`: wording or sequencing differs, but no owner, proof, scope, cleanup, or objective coverage changes. - `divergent`: reviewer finds a materially different objective interpretation, simpler target shape, atomic claim boundary, proof route, current-scope disposition, or replan trigger. Verdict must be `BLOCK`. - `blocked by missing authority`: reviewer cannot inspect enough evidence to reconstruct the target independently. Verdict must be `BLOCKED`. Reconstruction depth is role-bounded: - planning critic: objective, expected finished state, owner model, and atomic claim boundaries - quality guard: assigned atomic claim and enough lifecycle context to judge implementation quality and plan validity - final reviewer: whole objective coverage from completed claims, proof, residuals, repo state, and artifact disposition ## Simplicity And Fix-Now Review Working behavior is not enough. Review whether the solution is simple, owner-correct, and unified with established peer patterns. Block unnecessary owners, wrappers, shims, flags, fallback paths, compatibility paths, defensive branches, stale tests/docs, proof-only entrypoints, and speculative abstractions unless a real owner and failure mode justify them. Block missed simplification/unification when current work exposes an inconsistency and applying an established peer pattern would make the touched system simpler or more unified without adding capability, public surface, optional behavior, compatibility path, or speculative abstraction. Queue or require a parent decision instead of blocking as fix-now when the finding adds product/runtime capability, introduces a new abstraction or pattern, requires broad migration outside the touched owner path, has multiple valid target patterns, or cannot be proved within the current or directly adjacent atomic claim. ## Finding Standard Prefer fewer high-confidence findings over many weak comments. A finding is valid only when it is concrete, actionable, and useful to the author. Each finding must include: - severity: `P0`, `P1`, `P2`, or `P3` - confidence: `high`, `medium`, or `low` - exact location: `file/path:line` - current-scope reason: why this blocks the reviewed objective or approved scope - impact: the failure mode, affected path/data/user, and when it happens - required fix: the smallest owner-correct repair, not just a symptom patch - disposition: fixed, current-scope blocker, separate debt, accepted temporary debt, no-change, or blocked Severity guide: - `P0`: must stop release immediately; critical security, data loss, corruption, irreversible migration/deployment breakage, or broad outage. - `P1`: blocks the objective or normal-use correctness, security, reliability, data integrity, migration, or recovery path. - `P2`: real current-scope bug or quality regression in a plausible edge path, secondary workflow, admin/observability path, or maintainability surface. - `P3`: lower-severity current-scope cleanup or structural concern that should be fixed before approval because it will make the code harder to own. Unclassified material findings block approval. A `NON-BLOCKING` observation is valid only for separate debt or explicitly accepted temporary debt. ## Reference Index Reference files are optional review lenses selected by the caller, role prompt, or handoff before applying this skill. They are not activation rules. - `references/patch-native-bug-hunt.md`: changed-surface bug finding. - `references/structural-quality.md`: maintainability, abstraction, ownership, and simplification review. - `references/objective-proof-closeout.md`: objective coverage, proof validity, cleanup, repo health, and closeout review. - `references/finding-disposition.md`: current-scope, separate debt, accepted temporary debt, and no-change classification. ## Method - Stay read-only. - Use fresh context. - Inspect the diff, changed files, adjacent owner/interface paths, tests, docs, proof artifacts, generated artifacts, and active finding ledger needed to judge the claim. - Apply selected references only. Do not treat the reference index itself as an activation rule. - If no findings remain, state which bug classes and quality classes were inspected and why the reviewed scope was sufficient. ## Output Report: - verdict: `APPROVE`, `BLOCK`, or `BLOCKED` - convergence verdict - binding objective and accepted reductions - expected finished repo state - reconstructed atomic claims or coverage units - authority inspected - reviewed scope and why it is sufficient or insufficient - plan/note interpretation verdict - selected references and verdict for each - findings with exact location, impact, severity, confidence, required fix, and disposition - remaining required work or `none` --- > Source: [Vistyy/agent-harness](https://github.com/Vistyy/agent-harness) — distributed by [TomeVault](https://tomevault.io).