cli-reviewer

cli-reviewer is an agent for Claude Code from avelikiy/great_cto. It costs 31 tokens per session (1,800 once invoked), scanned B, original, MIT.

A pre-implementation review agent for command-line tools, which are programs operated through a terminal. It checks command behavior, argument handling, shell-injection risks, secrets in output, cross-platform paths, and dangerous defaults.

In plain words
What is it for?
Use it before building or changing a CLI to review input handling, destructive commands, filename parsing, automation behavior, secret redaction, portability, and terminal-facing options.
Why use it?
It helps prevent command-line features from running unsafe commands or behaving unexpectedly in scripts, CI, or unusual file-name cases. It also checks common usability conventions such as help, version, exit codes, JSON output, and no-color mode.

Agent for Claude Code

Written for Claude Code: effort in frontmatter. Also seen: model in frontmatter; mentions subagents.

Part of the great-cto plugin — 40 skills, 44 commands, 70 agents shipped together

Good fit Use it before building or changing a CLI to review input handling, destructive commands, filename parsing, automation behavior, secret redaction, portability, and terminal-facing options.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/avelikiy/great_cto/cli-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/avelikiy/great_cto

Made for: Claude Code.

Or install great-cto, the plugin that ships this one along with the rest of its 40 skills, 44 commands, 70 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 cli-reviewer

README.md
[![agentmods](https://agentmods.dev/badge/agents/avelikiy/great_cto/cli-reviewer.svg)](https://agentmods.dev/agents/avelikiy/great_cto/cli-reviewer)
Your own site
<a href="https://agentmods.dev/agents/avelikiy/great_cto/cli-reviewer"><img src="https://agentmods.dev/badge/agents/avelikiy/great_cto/cli-reviewer.svg" alt="Measured on agentmods" height="20"></a>
Per session 31 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,800 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 2 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 $0.00031 $0.01800
Opus 5 $0.00015 $0.00900
Sonnet 5 $0.00006 $0.00360
Haiku 4.5 $0.00003 $0.00180

Measured 2d ago against content hash 19e505e9d2e6, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade B, and why

cli-reviewer scanned grade B with 2 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.

Recursive force deletemediumDestructive command

rm -rf with a variable or a broad path is one typo away from removing the wrong tree.

You are the **CLI Reviewer** — a specialist subagent that activates for `archetype: cli-tool`. The general code-reviewer covers correctness; you cover the operator-surface where one bad default `rm -rf` ships a footgun t

Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.

Runs shell commandslowCapability

Expected in a hook, worth knowing in a rule or an instructions file.

4. Look for: `child_process.exec(`, `subprocess.run(..., shell=True)`, `os.system(`, `Command::new("sh")`
agents/cli-reviewer.md · 163 lines

How it starts

The opening of the file, as written. The whole thing — 163 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are the CLI Reviewer — a specialist subagent that activates for archetype: cli-tool. The general code-reviewer covers correctness; you cover the operator-surface where one bad default rm -rf ships a footgun to thousands of users.

The Step-0 read-inputs, output convention (docs/sec-threats/TM-{slug}.md), severity scale, verdict rules, and HANDOFF format come from archetype-review-base. This prompt adds ONLY the CLI heuristics.

Two argument surfaces that behave differently than they read

A confirmation prompt is not a guard when stdin is not a terminal. Piped input, CI and a background invocation all skip the prompt, and the destructive path then runs unattended — the exact context where nobody is watching. A destructive subcommand needs an explicit --yes/--force and must REFUSE rather than proceed when it cannot ask.

A filename is not a safe string. A file legitimately named -rf or --config is parsed as a flag unless the CLI honours -- as the end-of-options marker, and - conventionally means stdin rather than a file called -. Both change behaviour on names users really have; state which convention the tool follows.

Domain triggers (in addition to the base "when invoked")

  • Any new subcommand / flag / dangerous-by-default operation
  • Pre-publish to npm / PyPI / crates.io / Homebrew

Domain inputs to read

After the base Step-0, read in order:

  1. ARCH § Commands
  2. package.json bin: field / pyproject.toml [project.scripts] / Cargo.toml [[bin]]
  3. Source — every commander / click / clap / cobra definition
  4. Look for: child_process.exec(, subprocess.run(..., shell=True), os.system(, Command::new("sh")

Domain review steps

Step 1: Shell-injection sweep (highest priority)

For every external-process call, classify:

Pattern Status
execFile(cmd, [args]) / subprocess.run([cmd, *args]) / Command::new(cmd).args(...) ✓ Safe
exec(template_string_with_user_input) ❌ REJECT — shell-injection
subprocess.run(cmd, shell=True) with any user-derived component ❌ REJECT
child_process.exec("git " + branch) where branch is user input ❌ REJECT
os.system("...") with any variable ❌ REJECT — no quoting protection
cp.spawn("sh", ["-c", ...]) ❌ REJECT unless deeply justified

Read the full file on GitHub · 163 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. 2d ago Changed 19e505e9d2e6
  2. 4d ago Changed · -51 tokens per session b381c359c791
  3. 8d ago First seen · 163 lines · 82 tokens per session scan B a41fff671810

Subscribe to this mod's changes

cli-reviewer is an agent published in the GitHub repository avelikiy/great_cto (89 stars, last pushed today), licensed MIT. It adds 31 tokens to every session and 1,800 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it B with 2 findings (recursive force delete, runs shell commands). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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