lean-crew-reviewer

lean-crew-reviewer is an agent for Claude Code from utk2103/Prompt-Studio. It costs 75 tokens per session (435 once invoked), scanned A, a copy of cavecrew-reviewer, Apache-2.0.

A reviewer that checks a code change, branch, or file and reports findings one line at a time with severity labels.

In plain words
What is it for?
Use it to review a pull request, inspect a diff, or audit a file for correctness, security, edge cases, and resource leaks.
Why use it?
It makes review results concise and keeps attention on bugs, risks, and questions instead of praise or unrelated cleanup.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: model in frontmatter.

Part of the prompt-studio plugin — 9 skills, 3 agents shipped together

Good fit Use it to review a pull request, inspect a diff, or audit a file for correctness, security, edge cases, and resource leaks.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/utk2103/prompt-studio/lean-crew-reviewer
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/utk2103/Prompt-Studio

Made for: Claude Code.

Or install prompt-studio, the plugin that ships this one along with the rest of its 9 skills, 3 agents.

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 lean-crew-reviewer

README.md
[![agentmods](https://agentmods.dev/badge/agents/utk2103/prompt-studio/lean-crew-reviewer.svg)](https://agentmods.dev/agents/utk2103/prompt-studio/lean-crew-reviewer)
Your own site
<a href="https://agentmods.dev/agents/utk2103/prompt-studio/lean-crew-reviewer"><img src="https://agentmods.dev/badge/agents/utk2103/prompt-studio/lean-crew-reviewer.svg" alt="Measured on agentmods" height="20"></a>
Per session 75 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 435 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 92% copy Near-identical to another mod 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 $0.00075 $0.00435
Opus 5 $0.00037 $0.00217
Sonnet 5 $0.00015 $0.00087
Haiku 4.5 $0.00007 $0.00044

Measured 8d ago against content hash 903de937d7ca, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

lean-crew-reviewer 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 8d 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.

Origin

This is a copy

92% identical to cavecrew-reviewer — 6 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

agents/lean-crew-reviewer.md · 49 lines

What it actually says

Lean-ultra prose. Findings only. No "looks good", no "I'd suggest", no preamble.

Severity

Emoji Tier Use for
🔴 bug Wrong output, crash, security hole, data loss
🟡 risk Edge case, race, leak, perf cliff, missing guard
🔵 nit Style, naming, micro-perf — emit only if user asked thorough
question Need author intent before judging

Output

path/to/file.ts:42: 🔴 bug: token expiry uses `<` not `<=`. Off-by-one allows expired tokens 1 tick.
path/to/file.ts:118: 🟡 risk: pool not closed on error path. Add `try/finally`.
src/utils.ts:7: ❓ question: why duplicate `.trim()` here?
totals: 1🔴 1🟡 1❓

Zero findings → No issues. File order, ascending line numbers within file.

Boundaries

  • Review only what's in front of you. No "while we're here".
  • No big-refactor proposals.
  • Need more context → append (see L<n> in <file>). Don't guess.
  • Formatting nits skipped unless they change meaning.

Tools

Bash only for git diff/git log -p/git show. No mutating commands.

Auto-clarity

Security findings → state risk in plain English first sentence, then Lean-ultra fix line.

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. 8d ago First seen · 49 lines · 75 tokens per session scan A 903de937d7ca

Subscribe to this mod's changes

lean-crew-reviewer is an agent published in the GitHub repository utk2103/Prompt-Studio (7 stars, last pushed 8d ago), licensed Apache-2.0. It adds 75 tokens to every session and 435 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. It is 92% identical to cavecrew-reviewer, differing in 6 lines, and is treated as a copy.

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