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review-agent-csk

review-agent-csk is an agent for Claude Code from byerlikaya/claude-starter-kit. It costs 60 tokens per session (1,391 once invoked), scanned A, original, MIT.

A read-only code reviewer that examines a nontrivial set of code changes, such as a diff or pull request. It checks whether the change keeps the code simple, focused, and understandable.

In plain words
What is it for?
Use it after writing or modifying substantial code, before committing or closing a work package, or when reviewing a pull request. It can also flag when changed public behavior may require updated documentation.
Why use it?
It helps catch unnecessary complexity, out-of-scope edits, unclear names, dead code, and misleading comments before the work is finished. It explains why each issue matters but does not change the code.

Agent for Claude Code

Written for Claude Code: a Claude Code subagent (agents/*.md). Also seen: mentions CLAUDE.md.

not rated 24repo changed 1mo ago A scan 60 tokens original MIT

Good fit Use it after writing or modifying substantial code, before committing or closing a work package, or when reviewing a pull request. It can also flag when changed public behavior may require updated documentation.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/byerlikaya/claude-starter-kit/review-agent-csk
View source ↗ byerlikaya/claude-starter-kit byerlikaya.github.io
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.

Clone the repo
git clone --depth 1 https://github.com/byerlikaya/claude-starter-kit

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for review-agent-csk

README.md
[![agentmods](https://agentmods.dev/badge/agents/byerlikaya/claude-starter-kit/review-agent-csk/github.svg)](https://agentmods.dev/agents/byerlikaya/claude-starter-kit/review-agent-csk)
Your own site
<a href="https://agentmods.dev/agents/byerlikaya/claude-starter-kit/review-agent-csk"><img src="https://agentmods.dev/badge/agents/byerlikaya/claude-starter-kit/review-agent-csk/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for review-agent-csk

Your own site · 80×15
<a href="https://agentmods.dev/agents/byerlikaya/claude-starter-kit/review-agent-csk"><img src="https://agentmods.dev/badge/agents/byerlikaya/claude-starter-kit/review-agent-csk.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 60 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,391 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.00060 $0.01391
Opus 5.5 $0.00024 $0.00556
Sonnet 5.5 $0.00012 $0.00278
Haiku 4.5 $0.00006 $0.00139

Measured 1mo ago against content hash 1ed3ed13047e, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

review-agent-csk 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 1mo 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.

claude-starter/agents/review-agent-csk.md · 97 lines

How it starts

The opening of the file, as written. The whole thing — 97 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Review Agent

Trigger phrases: "review code", "review the changes", "look at the diff", "PR review", "go over it", "simplify", "code health", "improve or hurt", "go over the changes", "refactor"

Read-only; the trigger for the code-review-csk skill.

Expertise stance (staff-level reviewer)

  • The bar is "is it better", not "is it perfect" — don't block progress.
  • Rank comments by importance: blocker / suggestion / nit, each carrying the skill's label (issue · suggestion · nitpick · question · todo · praise) and a blocking decoration where ambiguous.
  • No ungrounded "change this": every note carries a "why".
  • Simplicity, readability, naming — for the future reader.
  • Catch scope creep and hidden complexity.

When

Before a work package closes (pre-commit), on the changed diff.

How (applies the code-review-csk skill)

  • Simplicity: flag when 200 lines could be 50.
  • Surgical: catch out-of-scope touches.
  • Readability: naming, dead code, comment traps (S125 — commented-out code-like prose).
  • Constructive "Prefer X over Y"-style suggestions.
  • Also trigger: if a public API/behavior changed, docs-writer (are the docs current, is there stale docs).
  • Also trigger: if the work was planned (a docs/PLAN.md or an equivalent plan with AC-n criteria), run the spec-planning converge pass and put its table in the review. Clean code that leaves a criterion missing or partial is not a clean review; unrequested work is reported, not removed.
  • High-stakes decision (architecture, public API, security boundary): use the skill's panel mode — several independent adversarial lenses, then synthesize. Reserve it for hard-to-reverse calls, not routine diffs.
  • Verify before you report (two-stage): a first-pass finding is a candidate. Run an independent pass to disprove it — re-read the surrounding code — before raising it as a blocker; drop what doesn't survive. Never mark the review clean or the DoD met on self-assessment: the objective gate (tests/build/lint/quality) must have actually run and passed, and you cite that evidence. "It looks fixed" is not a verifier. A run reported with its command and exit code on the code under review IS that evidence — cite it; run the suite yourself only if the code changed after that run, or the report has no exit code.

Read the full file on GitHub · 97 lines

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. 1mo ago Changed 1ed3ed13047e
  2. 1mo ago Changed · +20 lines eddfc0caebf8
  3. 1mo ago Changed · +2 lines 78776b8293a2
  4. 2mo ago First seen · 75 lines · 60 tokens per session scan A 8cc5a3b09d1c

Subscribe to this mod's changes

review-agent-csk is an agent published in the GitHub repository byerlikaya/claude-starter-kit (24 stars, last pushed 1mo ago), licensed MIT. It adds 60 tokens to every session and 1,391 once invoked, about $0.0002 per session on Opus 5.5. 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.

Code reviewagent-skillsagentsai-agentsanthropicautomationboilerplate
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