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.
npx skills add pdugan20/claudelint --skill validate-skillsgit clone --depth 1 https://github.com/pdugan20/claudelintWrote 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.
[](https://agentmods.dev/skills/pdugan20/claudelint/validate-skills)<a href="https://agentmods.dev/skills/pdugan20/claudelint/validate-skills"><img src="https://agentmods.dev/badge/skills/pdugan20/claudelint/validate-skills/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.
<a href="https://agentmods.dev/skills/pdugan20/claudelint/validate-skills"><img src="https://agentmods.dev/badge/skills/pdugan20/claudelint/validate-skills.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00074 | $0.01048 |
| Opus 5 | $0.00037 | $0.00524 |
| Sonnet 5 | $0.00015 | $0.00210 |
| Haiku 4.5 | $0.00007 | $0.00105 |
Grade B, and why
validate-skills scanned grade B with 1 finding 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 10d 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.
**User says**: "Pre-commit hook is failing on my cleanup skill with 'dangerous command detected: rm -rf'" Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.
How it starts
The opening of the file, as written. The whole thing — 141 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Validate Claude Code Skills
Runs claudelint validate-skills to validate Claude Code skill directories.
Usage
claudelint validate-skills $ARGUMENTS
Options
--path <path>- Custom path to skills directory--skill <name>- Validate specific skill--verbose- Show detailed output--warnings-as-errors- Treat warnings as errors
Examples
Example 1: Skill appears in slash menu but won't execute
User says: "I see my skill /deploy-app in the menu but when I run it, Claude says it can't find it" What happens:
- Checks directory name is
deploy-app/but SKILL.md hasname: deployApp - Shows mismatch: directory uses kebab-case, frontmatter uses camelCase
- Explains skill names must match directory name exactly
- Shows fix: change frontmatter to
name: deploy-app
Result: Skill executes correctly after fixing name mismatch
Example 2: Claude won't use Bash tool even though it's needed
User says: "My skill script.sh needs to run bash commands but Claude says 'Tool Bash not allowed'" What happens:
- Checks SKILL.md frontmatter has
allowed-tools: ["bash", "read"] - Shows tool names are case-sensitive - found lowercase "bash" instead of "Bash"
- Lists all valid tool names with correct capitalization
- Shows fix:
allowed-tools: ["Bash", "Read"]
Result: Claude can now execute bash commands in the skill
Example 3: Skill validation blocks git commit with "dangerous command"
User says: "Pre-commit hook is failing on my cleanup skill with 'dangerous command detected: rm -rf'" What happens:
- Scans cleanup.sh script, finds
rm -rf $TEMP_DIR - Flags it because
$TEMP_DIRcould be empty or/(dangerous) - Suggests safer alternative: validate directory first, use explicit path
- Shows fixed version:
[[ -n "$TEMP_DIR" && "$TEMP_DIR" != "/" ]] && rm -rf "$TEMP_DIR"
Result: Skill now validates paths before deletion, commit succeeds
Command Examples
Validate all skills:
What ships with it
4 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 10d ago First seen · 141 lines · 74 tokens per session scan B 4ecd6776879b
validate-skills is a skill published in the GitHub repository pdugan20/claudelint (12 stars, last pushed yesterday), licensed MIT. It adds 74 tokens to every session and 1,048 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it B with 1 finding (recursive force delete). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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