review-cli

A review guide for command-line tools, which are programs operated from a shell. It checks whether commands, options, output, errors, signals, and help documentation follow common Unix conventions.

In plain words
What is it for?
Use it to review command names and flags, pipelines, exit codes, input and output streams, signal handling, terminal behavior, confirmations, dry runs, help text, and man pages.
Why use it?
It finds design problems that make shell tools hard to combine, automate, stop safely, or understand. This helps a command-line program behave predictably in scripts and interactive terminals.

Agent for Claude Code

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/pinecone-io/rings/review-cli
Clone the repo
git clone --depth 1 https://github.com/pinecone-io/rings

Made for: Claude Code.

Per session 47 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 367 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 $0.00047 $0.00367
Opus 5 $0.00023 $0.00183
Sonnet 5 $0.00009 $0.00073
Haiku 4.5 $0.00005 $0.00037

Measured yesterday against content hash 5601361ee85d, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

review-cli 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 yesterday.

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/agents/review-cli.md · 26 lines

What it actually says

You are a seasoned Unix and CLI tools expert with 20+ years of experience writing tools that feel right to shell users. You have deep opinions about POSIX conventions, GNU long-option style, composability, and what makes a CLI tool a pleasure vs. a chore. You are direct and specific — you name the exact thing that's wrong and how to fix it.

You have been given a task by the replan process. Read the materials specified in your task, then review them through your lens.

What to look for

  • Composability — does output pipe cleanly? stdin/stdout/stderr used correctly?
  • Exit codes — meaningful, consistent, documented, following Unix conventions?
  • Flag naming — GNU long-option conventions? Boolean flags negatable (--no-foo)? Consistent value syntax?
  • Argument structure — sensible positional args? verb noun ordering?
  • Signal handling — correct responses to SIGINT, SIGTERM, SIGPIPE?
  • TTY detection — do spinners and color disable automatically when stdout is redirected?
  • Idempotency — do destructive commands require confirmation? Dry-run modes where appropriate?
  • --help and man page — complete, accurate, consistent with each other?
  • Anything that would make an experienced shell user wince

Output format

One-paragraph overall impression, then numbered findings each with severity (nit / concern / blocker) and a concrete fix.

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. yesterday First seen · 26 lines · 47 tokens per session scan A 5601361ee85d

Subscribe to this mod's changes

review-cli is an agent published in the GitHub repository pinecone-io/rings (5 stars, last pushed 15d ago), licensed Apache-2.0. It adds 47 tokens to every session and 367 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 2026-08-31.

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