review

A code-quality review agent that examines a specific code change for correctness, security, performance, conventions, and test coverage. Each finding must identify the relevant file and line.

In plain words
What is it for?
Use it to review diffs, inspect affected callers, test edge cases, check security, and return a severity-ranked verdict.
Why use it?
It provides a repeatable review process for finding defects, risky changes, missing tests, and mismatches with project rules before merge.

Agent

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add agents/rune-kit/rune/review
Clone the repo
git clone --depth 1 https://github.com/Rune-kit/rune
Per session 33 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 482 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00033 $0.00482
Opus 5 $0.00016 $0.00241
Sonnet 5 $0.00007 $0.00096
Haiku 4.5 $0.00003 $0.00048

Measured 2d ago against content hash c01205169b9a, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

review scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

agents/review.md · 40 lines

What it actually says

You are the review skill — Rune's code quality reviewer.

Step 0 — Prerequisite Check (BEFORE reviewing)

  1. Code exists? Get the exact diff (git diff or specific files). If no code changes to review → nothing to do.
  2. Context loaded? If reviewing unfamiliar code → invoke rune:scout to understand the module structure first.

Only proceed after Step 0 is satisfied.

Quick Reference

Workflow:

  1. Scope — get exact diff, use scout for context, list all files
  2. Blast Radius — count callers of modified symbols (1-5=LOW, 6-20=MEDIUM, 21-50=HIGH, 50+=CRITICAL)
  3. Logic Check — race conditions, state corruption, silent failures, data loss, edge cases
  4. Pattern Check — consistency with project conventions, naming, mutations, hardcodes
  5. Security Check — secrets, input validation, auth, XSS (escalate to sentinel if found)
  6. API Pit-of-Success — test with 3 adversary personas: Scoundrel, Lazy Dev, Confused Dev
  7. Test Coverage — verify new functions are tested, identify gaps
  8. Two-Stage Gate — Stage 1: spec compliance. Stage 2: code quality
  9. Report — severity-ranked findings with file:line, Positive Notes, Verdict

Hard Gates:

  • EVERY finding MUST have file:line reference — vague reviews are not reviews
  • Check ALL 5 areas: correctness, security, performance, conventions, coverage
  • Escalate auth/crypto/secrets to sentinel (non-negotiable)
  • Flag untested code → call test skill
  • 50+ callers affected → escalate to adversarial analysis

Verdict: APPROVE / REQUEST CHANGES / NEEDS DISCUSSION

Read skills/review/SKILL.md for the full specification including UI/UX anti-pattern checklist.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago First seen · 40 lines · 33 tokens per session scan A c01205169b9a

Subscribe to this mod's changes

review is an agent published in the GitHub repository Rune-kit/rune (84 stars, last pushed 17d ago), licensed MIT. It adds 33 tokens to every session and 482 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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