skill-eval

skill-eval is a command for Claude Code from citedy/skills. It costs 35 tokens per session (95 once invoked), scanned A, original, MIT.

A quality checker for AI-agent slash commands and skills. It checks their YAML frontmatter, description length, wording, directive verbs, and duplicate definitions.

In plain words
What is it for?
Use it to audit a project’s commands directory and review failures with suggested fixes.
Why use it?
It catches consistency and clarity problems in commands and skills after they are added or edited.

Command for Claude Code

Written for Claude Code: a Claude Code command (commands/*.md). Also seen: reads .claude/ paths.

Needs its repository: it runs a file that does not travel with it, so clone the repository first. The line is node .claude/skills/skill-quality-eval/scripts/run-eval.js.

Good fit Use it to audit a project’s commands directory and review failures with suggested fixes.

Compare 6 commands from other repositories ↓
Install

Getting it into your agent

It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.

Clone the repo
git clone --depth 1 https://github.com/citedy/skills
agentmods
npx agentmods add commands/citedy/skills/skill-eval

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 skill-eval

README.md
[![agentmods](https://agentmods.dev/badge/commands/citedy/skills/skill-eval/github.svg)](https://agentmods.dev/commands/citedy/skills/skill-eval)
Your own site
<a href="https://agentmods.dev/commands/citedy/skills/skill-eval"><img src="https://agentmods.dev/badge/commands/citedy/skills/skill-eval/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 skill-eval

Your own site · 80×15
<a href="https://agentmods.dev/commands/citedy/skills/skill-eval"><img src="https://agentmods.dev/badge/commands/citedy/skills/skill-eval.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 35 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 95 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 $0.00035 $0.00095
Opus 5.5 $0.00014 $0.00038
Sonnet 5.5 $0.00007 $0.00019
Haiku 4.5 $0.00003 $0.00010

Measured 1mo ago against content hash 9816c7fc8d9a, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

skill-eval 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.

commands/skill-eval.md · 11 lines

What it actually says

Run the skill quality evaluator on the project's commands directory:

node .claude/skills/skill-quality-eval/scripts/run-eval.js

Read the output and present the results to the user. If there are failures, explain each issue and suggest fixes.

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 First seen · 11 lines · 35 tokens per session scan A 9816c7fc8d9a

Subscribe to this mod's changes

skill-eval is a command published in the GitHub repository citedy/skills (2 stars, last pushed 4mo ago), licensed MIT. It adds 35 tokens to every session and 95 once invoked, about $0.0001 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 2026-08-31.