skill-format

skill-format is a command for coding agents from basher83/lunar-claude. It costs 0 tokens per session (1,474 once invoked), scanned A, original, MIT.

A slash command that checks whether a Claude Code plugin command follows the required command standards.

In plain words
What is it for?
Use it to review a plugin command’s location, metadata, arguments, permissions, file references, Bash syntax, and content.
Why use it?
It helps identify formatting and configuration issues before a command is used or reviewed.

Command

Installs and runs on its own, but its text points at files inside the plugin that ships it — anything it tells you to read at a ${CLAUDE_PLUGIN_ROOT} path is only there once the plugin is installed.

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 commands/basher83/lunar-claude/skill-format
Clone the repo
git clone --depth 1 https://github.com/basher83/lunar-claude

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 skill-format

README.md
[![agentmods](https://agentmods.dev/badge/commands/basher83/lunar-claude/skill-format.svg)](https://agentmods.dev/commands/basher83/lunar-claude/skill-format)
Your own site
<a href="https://agentmods.dev/commands/basher83/lunar-claude/skill-format"><img src="https://agentmods.dev/badge/commands/basher83/lunar-claude/skill-format.svg" alt="Measured on agentmods" height="20"></a>
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,474 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 $0.00000 $0.01474
Opus 5 $0.00000 $0.00737
Sonnet 5 $0.00000 $0.00295
Haiku 4.5 $0.00000 $0.00147

Measured 5d ago against content hash c6d7ec43a0e0, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

skill-format 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 5d 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.

docs/reviews/audits/meta-claude/commands/skill-format.md · 210 lines

How it starts

The opening of the file, as written. The whole thing — 210 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Slash Command Standards Compliance Review

File: plugins/meta/meta-claude/commands/skill/format.md Date: 2025-11-17 Reviewer: command-audit Agent Command Type: Plugin


Standards Reference

Source: plugins/meta/claude-docs/skills/official-docs/reference/slash-commands.md

Key Requirements:

File Location (Lines 57-58, 71-72, 223):

  • Project commands: .claude/commands/ directory
  • User commands: ~/.claude/commands/ directory
  • Plugin commands: commands/ directory in plugin root

Frontmatter Fields (Lines 176-182):

  • description: Brief description (optional, defaults to first line)
  • allowed-tools: Tool permissions (optional, inherits from conversation)
  • argument-hint: Expected arguments (optional)
  • model: Specific model (optional, inherits from conversation)
  • disable-model-invocation: Prevent SlashCommand tool (optional, default false)

Arguments (Lines 96-126):

  • $ARGUMENTS: All arguments as single string
  • $1, $2, etc.: Individual positional arguments

Bash Execution (Lines 129-150):

  • Inline execution uses ! prefix: !`command`
  • Requires allowed-tools: Bash(pattern:*)

File References (Lines 152-166):

  • Use @ prefix: @path/to/file

Best Practices:

  • Clear, specific instructions (not vague language)
  • Written from Claude's perspective ("Your task is...")
  • Examples for complex commands
  • Single, clear purpose (Unix philosophy)
  • KISS principle (Keep It Simple)
  • YAGNI principle (You Aren't Gonna Need It)

Violations Found

VIOLATION #1: Argument Handling - argument-hint format doesn't match official style

Current:

argument-hint: [research-dir]

Standard violated: argument-hint should use lowercase-with-hyphens format for all arguments (slash-commands.md line 179 with examples at lines 189, 201)

Severity: Minor

Why this matters: The current format uses a hyphenated argument name in the hint, which is consistent with official examples. However, examining the official examples more closely:

Read the full file on GitHub · 210 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. 5d ago First seen · 210 lines · 0 tokens per session scan A c6d7ec43a0e0

Subscribe to this mod's changes

skill-format is a command published in the GitHub repository basher83/lunar-claude (22 stars, last pushed yesterday), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 1,474 tokens. 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.