Code Review

Code Review: $ARGUMENTS

Review the code related to: $ARGUMENTS

Reference files (load what the run needs)

Flag parsing, scope resolution, and comment cleanup (Steps 1–3b.6) need neither.

Usage

/code-review                          # Comment cleanup + all 8 review aspects, default scope
/code-review --quick                  # One integrated review pass, no scorer-agent round
/code-review <target>                 # Comment cleanup + all 8 aspects, scoped to target
/code-review --architecture           # Architecture only
/code-review --security --performance # Two aspects
/code-review --logic src/auth/        # One aspect, scoped to target
/code-review --typescript             # TypeScript-specific review only
/code-review --project                # Project's own review-project checks only
/code-review --library-use            # Library-usage review only (vs the repo's library-use reference)
/code-review --all                    # Whole repo
/code-review --changed                # Unstaged changes only
/code-review --staged                 # Staged changes only (errors if nothing staged)
/code-review --unpushed               # Files changed across all unpushed commits (errors if nothing unpushed)
/code-review --multi                  # All aspects + external advisors
/code-review --multi --architecture   # Architecture only + external advisors
/code-review --all --multi            # Whole repo + external opinions
/code-review --rereview               # Re-review automatically after fixes are applied

--rereview composes with comprehensive aspect selections, --quick, scope flags, or --multi.

Review Modes

The default mode is comprehensive: run all selected perspectives independently, then independently score and triage their findings.

Every mode first runs review-comments --fix over the resolved scope. Comment cleanup is a preflight edit, not a review perspective: its results are reported separately and are never confidence-scored or promoted into Critical/Should Fix findings.

--quick is an explicit low-latency preset for routine small changes. It keeps the normal scope resolution, project-guideline checks, severity output, fix prompt, and optional --rereview loop, but uses one integrated read-only reviewer and no separate scorer agents. It does not activate automatically from diff size: a tiny auth, migration, or concurrency change may still deserve the comprehensive mode.

--quick composes with a target, one scope flag, or --rereview. It cannot be combined with aspect flags or --multi; abort with --quick is a complete review preset; remove the aspect flags or --multi.

Aspect Selection

Aspect flags let you run a subset of the review agents instead of all 8. Flags are additive — pass as many as you want. Comment quality is absent from this list because its fix pass always runs before the selected review.

Two further aspects are conditional add-ons — in the default (no-aspect-flag) run they are included automatically when they apply; with explicit aspect flags they run only if their own flag is passed (see Step 3b.5 for detection):

Aspect rules:

• In comprehensive mode, no aspect flags → run all 8 core agents, plus any detected language review, the project review, and the library-use review if present.
• One or more aspect flags → run only those agents, skip the rest. The conditional add-ons run only if --typescript / --project / --library-use (or another --<language>) is among the flags.
• --quick is a complete preset and cannot be combined with aspect flags.
• --multi composes with any aspect selection.
• The non-flag portion of $ARGUMENTS is the review target (e.g. src/auth/).

Agents 8–10 are the plug-and-play extension layer (add a language by creating a review-<language> skill; a project adds its own review-project). Details in references/agents.md.

Scope Selection

Scope flags determine which files the reviewers inspect. The resolved scope is passed through to every review agent or delegated sub-skill.

Scope rules:

• Exactly one scope flag may be passed. Multiple → error.
• Default (no scope flag): behave as --staged if anything is staged; otherwise auto-fall back to --changed. Announce the resolved mode at the start of the run so the user isn't surprised. (--unpushed is never auto-selected — it's opt-in only.)
• Explicit --staged with nothing staged: abort immediately with Nothing staged. Re-run with --all or --changed. (Explicit ≠ default — no silent fallback.)
• Explicit --unpushed with nothing unpushed: abort immediately with Nothing unpushed. Re-run with --staged, --changed, or --all. If there is no remote/upstream (or the range walks back to the root commit) so the range can't be determined reliably, abort and ask the user to pick another scope. (Explicit ≠ default — no silent fallback.)
• Target argument wins: if a non-flag target is provided (e.g. /code-review src/auth/), it overrides scope flags entirely. The target is passed to all sub-agents as-is.

Gotchas

• Both modes silently drop findings below the 80-point confidence threshold. Comprehensive mode uses independent scorers; quick mode trades that independent validation for a single reviewer's self-filter.
• In comprehensive mode, Step 4.5's triage never drops anything silently — every issue routed out of the main severity sections appears in the Improbable / Not Worth Handling appendix with its file:line and a one-line reason. Quick mode omits low/medium-impact improbable findings entirely to stay concise.
• With --staged, the comment preflight edits the working-tree copies and does not stage them. Announce that the cleanup must be staged separately; never run git add implicitly.

Step 1: Locate and Read Project Guidelines

First, find and read any CLAUDE.md files in the repository root and relevant directories to understand project-specific conventions and rules.

Step 2: Identify Relevant Code

Search for and identify all files related to "$ARGUMENTS". Use Glob and Grep to find:

• Direct implementations
• Related tests
• Usages/consumers of this code

Step 3: Resolve Scope and Run the Review

3a. Parse flags

If the removed --comments aspect flag is passed, abort with Comment cleanup now runs automatically before every code review. Use review-comments directly for a standalone comment report.

Strip aspect flags (--logic, --architecture, --security, --performance, --history, --test, --interface, --clean-code, --typescript, --project, --library-use), scope flags (--staged, --unpushed, --all, --changed), --quick, --multi, and --rereview from $ARGUMENTS. The remainder is the review target.

If --quick appears with any aspect flag or with --multi, abort with --quick is a complete review preset; remove the aspect flags or --multi. It may compose with a target, one scope flag, and --rereview.

In comprehensive mode, if any aspect flags are present, launch ONLY the corresponding agents (including the conditional add-ons only when --typescript/--project/--library-use is passed). Otherwise launch all 8 core agents plus whatever Step 3b.5 detects. In quick mode, follow the single-reviewer branch in Step 3c.

3b. Resolve scope

If a non-flag target was provided, skip this section — pass the target through to every agent as-is.

Otherwise, resolve the scope:

1. If more than one scope flag was passed → error: Pass only one of --staged, --unpushed, --all, --changed.
2. If --staged was passed explicitly:
   • Run git diff --cached --name-only. If empty → abort: Nothing staged. Re-run with --all or --changed.
   • Resolved scope: staged.
3. If --unpushed was passed explicitly:
   • Resolve the range: git rev-list HEAD --not --remotes (oldest unpushed commit's parent → HEAD). If empty → abort: Nothing unpushed. Re-run with --staged, --changed, or --all. If there is no remote/upstream, or the range walks back to the root commit, abort and ask the user to pick another scope.
   • Resolved scope: unpushed.
4. If --changed was passed: resolved scope is changed.
5. If --all was passed: resolved scope is all.
6. If no scope flag was passed (default):
   • Run git diff --cached --name-only. If non-empty → resolved scope is staged.
   • Otherwise → resolved scope is changed.
   • Announce the resolution: No scope flag — defaulting to --staged or No scope flag and nothing staged — defaulting to --changed.

Compute the file list once based on resolved scope:

• staged → git diff --cached --name-only
• unpushed → git diff --name-only $(git rev-list HEAD --not --remotes | tail -1)^..HEAD
• changed → git diff --name-only
• all → git ls-files

This file list is passed to inline agents and is also used to build the target argument for sub-skills that don't natively support --changed (see 3c).

3b.5. Detect language & project reviews

Determine which conditional add-on reviews apply. In comprehensive mode these become additional agents. In quick mode their skill/reference text becomes guidance for the single integrated reviewer. Skip this entirely if explicit aspect flags were passed and none of them is --typescript/--project/--library-use/another --<language> — in that case the user asked for a specific subset and add-ons don't run.

Language detection registry. For each language below, it applies if the resolved file list matches its extensions, or (for the all scope / when the file list is empty) the repo root has its marker file. If it applies and a review-<language> skill is installed, include that agent in comprehensive mode or record its SKILL.md as guidance for quick mode.

(To add a language: create a review-<language> skill and add a row here.)

Project review detection. If the repo defines its own project review skill at .claude/skills/review-project/SKILL.md or .agents/skills/review-project/SKILL.md, include the project review agent in comprehensive mode or record its SKILL.md as guidance for quick mode. If neither exists, skip silently.

Library-use review detection. If the repo has a library-use reference at .claude/skills/library-use/SKILL.md or .agents/skills/library-use/SKILL.md, include the review-library-use agent in comprehensive mode or record the reference as guidance for quick mode. If neither exists, skip silently (suggesting library-docs once is fine, but don't block the review).

Check both paths — .claude/skills/ is where Claude Code puts project skills; .agents/skills/ is where the other harnesses discover them. In some projects the latter is a symlink to the former, so either check finds it; others may only have .agents/skills/.

Announce what got auto-included. In comprehensive mode, use messages such as Detected TypeScript — adding review-typescript. In quick mode, say Detected TypeScript — applying review-typescript guidance in the quick review (and likewise for project and library-use guidance).

3b.6. Clean up comments

Before launching any review agent, invoke review-comments --fix exactly once against the resolved scope:

Treat its output as a preflight cleanup summary, not as review findings. Report how many comments were removed or rewritten and list any comment issues it could not safely fix, but do not send those items through confidence scoring or severity triage. Continue immediately when it finds nothing.

If a non-file target has no writable local source files, skip the cleanup and state that it requires a local checkout; do not turn that limitation into a review finding.

Keep the file list resolved in Step 3b even if cleanup edits change git status. Review the current contents of those same files, using the originally resolved diff or target to identify the intended change. With staged scope, explicitly say the cleanup edits are unstaged and must be staged separately; do not mutate the index.

3c. Run the selected mode

Quick mode (--quick)

Do not load references/agents.md. Launch exactly one read-only review agent and give it the resolved scope or target. Use the harness's fast read-only profile or lower per-agent reasoning effort when available. It must not delegate to sub-skills or dispatch more agents.

Give the reviewer this integrated brief:

• Read the applicable AGENTS.md / CLAUDE.md files, the scoped diff or files, relevant callers/consumers, and related tests.
• Review correctness, edge cases, error handling, regressions, missing or weak tests, security red flags, and interface compatibility. Flag obvious performance hazards only when directly supported by the changed path.
• If Step 3b.5 detected language, project, or library-use guidance, read those matching SKILL.md files as review references and apply their checks directly. Do not invoke them as skills.
• Return only actionable findings supported by a concrete code path. For each finding, include severity (Critical, Should Fix, or Nice to Have), file:line, what is wrong, why it matters, a concise fix, self-confidence from 0–100, likelihood (routine, plausible, rare, or theoretical), and blast radius (low, medium, or high). For rare or theoretical, name the reachability reason and cite any excluding guard.
• Self-filter aggressively: omit findings below 80 confidence and omit rare/theoretical findings with low or medium blast radius. Keep rare high-blast-radius findings and tag them with the short reachability reason.
• Return No actionable findings. if nothing survives.

After the agent returns, deduplicate its findings and render the surviving items under Critical Issues (Must Fix), Improvements (Should Fix), and Suggestions (Nice to Have), omitting empty sections. Explain what is wrong, why it matters, and how to fix it. Do not show self-confidence metadata and do not launch scorer agents. Then continue to Step 6.

Comprehensive mode

Load references/agents.md — it carries the brief for each of Agents 1–10.

Launch the selected review perspectives in parallel, queuing successive batches when runtime capacity requires it.

Launch workers that return findings without editing files. Disable delegation tools for ordinary reviewers where supported; read-only access alone does not prevent delegation. If a reviewer coordinates verification, name the checks, bound the descendants, and define when it should stop. Workers can read the relevant sub-skill directly when their harness has no Skill tool.

Each agent should output a list of issues. For each issue, include: what the problem is, where it is (file + line), and why it matters. Do NOT assign confidence scores — scoring happens in a separate pass.

Sub-agent invocation pattern. When a sub-agent delegates to a sub-skill, pass the resolved scope through directly:

All delegated review sub-skills (review-architecture, review-security, review-perf, review-interfaces, review-cleancode, review-typescript, test --review) accept --staged | --unpushed | --changed | --all. No special-casing needed. The project's review-project skill is expected to accept the same scope flags — if it doesn't, pass it the target/file list instead.

Inline agents (no delegation) work directly against the file list computed in step 3b.

Step 3.5: External Advisor Reviews (--multi only)

If --multi flag is present in $ARGUMENTS, also get external opinions:

Use the Skill tool to invoke second-opinion --quick, which queries every external advisor it has configured, in parallel. (The advisor roster lives in the second-opinion skill — don't enumerate it here.) Phrase the prompt according to the resolved scope from step 3b:

• staged → "Review the staged changes (git diff --cached) in this repository."
• unpushed → "Review the changes across all unpushed commits (git diff against the last pushed commit) in this repository."
• changed → "Review the unstaged changes (git diff) in this repository."
• all → "Review the codebase in this repository as a whole."
• target given → "Review the following target in this repository: <target>."

Then append: "Provide a focused code review in 300 words or less covering: potential bugs or edge cases, security concerns, performance issues, and architecture/pattern violations."

IMPORTANT: Do NOT proceed to Step 4 until the second-opinion results have been fully received. Wait for all background commands to complete and collect their output before continuing. This prevents completion notifications from appearing after the review summary. If an advisor is missing or errors out, continue with whichever responded — don't drop the others.

Steps 4, 4.5 and 5: Score, Triage, Format (comprehensive mode only)

Skip these steps in quick mode; Step 3c already produced the filtered, formatted review. In comprehensive mode, load references/scoring-and-output.md and follow it. In short: score every issue with independent parallel scorers (>= 80 passes), have those same scorers return likelihood + blast radius so improbable findings route to an appendix instead of the work list, then render the severity sections.

When that reference is done, come back here and do Step 6 — the rendered output is not the end of the run.

Step 6: Offer to Fix

This step is mandatory. Rendering the review output is not the end of the workflow — do not end the turn after printing the findings. If there is at least one Critical or Should Fix finding, you MUST call the AskUserQuestion tool so the user picks a fix scope by selection instead of typing one out.

Build the options list from the severity tiers that actually have findings, most-inclusive first:

AskUserQuestion takes at most 4 options, so when all tiers are populated drop the narrowest fix option (Fix Critical only) rather than Don't fix anything — the user can still ask for a narrower scope in free text.

Skip this step entirely (no prompt) only when there are no Critical and no Should Fix findings — a run that surfaced nothing but suggestions has nothing worth gating on.

Build the options only from the Critical Issues, Improvements, and Suggestions sections. Never include Improbable / Not Worth Handling items — not even under "Fix everything". Step 4.5 already judged them not worth doing, and offering to fix them reintroduces exactly the noise the appendix exists to remove.

When the user selects a fix option, apply the fixes for exactly the chosen severity tier(s) — no more, no less.

Step 7: Re-Review After Fixes (--rereview only)

If --rereview was passed AND fixes were applied in Step 6, automatically run the review again to verify the fixes landed cleanly and didn't introduce new issues:

• Re-run Steps 3–6 with the same review mode, aspect, --multi, and target/scope selection as the original run.
• Review the same file list computed in step 3b — fixes turn staged files into unstaged edits, so re-resolving scope from scratch could miss them. Reuse the original file list directly rather than recomputing from git diff.
• Announce the re-review at the start, e.g. Re-reviewing after fixes (--rereview).
• The re-review's Step 6 fix prompt runs as normal. This forms a natural loop: review → fix → re-review → fix … It terminates when the re-review surfaces no Critical/Should Fix findings (Step 6 is skipped) or the user picks "Don't fix anything".

Without --rereview, Step 6 ends the run after fixes are applied — the user must invoke /code-review again manually to verify.

Examples

Clean comments, then review the default scope with all 8 agents:

/code-review

Runs review-comments --fix, then 8 parallel review agents (bug/logic, architecture, security, performance, historical context, test quality, interface design, clean code) against staged changes (or unstaged changes if nothing is staged). Comment cleanup is summarized separately; review findings are prioritized by severity.

Quick review of a routine small change:

/code-review --quick

Runs one integrated read-only reviewer against staged changes (or unstaged changes if nothing is staged). It applies detected language, project, and library-use guidance directly, self-filters to well-supported actionable findings, and skips the independent scorer-agent round.

Focused single-aspect review:

/code-review --architecture

Runs only the architecture & patterns agent. Use this when you already know which concern you care about and don't want to wait on the other 8 agents or sift through their output. Flags are additive — combine them (e.g. --security --performance) to run a handful of aspects without running them all.

Whole-repo review:

/code-review --all

Runs comment cleanup and all 8 agents against every file in the repo (git ls-files). Use this for a fresh audit of an unfamiliar project, before a major release, or when nothing in the working tree is changed. Composes with aspect flags and --multi, e.g. /code-review --all --architecture --multi.

Cross-model consensus review:

/code-review --multi

Runs the same 8 review agents plus external reviews from every advisor second-opinion has configured, after comment cleanup. The output includes a cross-model agreement section highlighting issues where the internal agents and external advisors converge, giving higher confidence to consensus findings. --multi composes with aspect and scope flags, e.g. /code-review --multi --architecture or /code-review --all --multi.

Review, fix, then re-review automatically:

/code-review --rereview

Runs the review, offers the fix prompt (Step 6), and — once fixes are applied — immediately re-runs the same review on the same files to confirm the fixes landed and introduced no new issues. The loop continues until a re-review comes back with no Critical/Should Fix findings or the user declines to fix. Composes with aspect, scope, and --multi flags.

Troubleshooting

Too many changed files for agents to handle

Solution: Narrow the review scope by targeting a specific directory or file pattern (e.g., /code-review src/auth/) instead of the entire changeset, or break the PR into smaller, focused reviews.

Agent returns shallow or redundant findings

Solution: Ensure the review target is specific enough to give agents meaningful context; vague targets like "everything" produce generic results. Re-run with a focused target and verify that CLAUDE.md contains project-specific patterns the agents can check against.