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 wkusnierczyk/aigent --skill aigent-validatorgit clone --depth 1 https://github.com/wkusnierczyk/aigentWrote 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/wkusnierczyk/aigent/aigent-validator)<a href="https://agentmods.dev/skills/wkusnierczyk/aigent/aigent-validator"><img src="https://agentmods.dev/badge/skills/wkusnierczyk/aigent/aigent-validator/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/wkusnierczyk/aigent/aigent-validator"><img src="https://agentmods.dev/badge/skills/wkusnierczyk/aigent/aigent-validator.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 | $0.00059 | $0.00424 |
| Opus 5.5 | $0.00024 | $0.00170 |
| Sonnet 5.5 | $0.00012 | $0.00085 |
| Haiku 4.5 | $0.00006 | $0.00042 |
Grade A, and why
aigent-validator 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.
What it actually says
Skill Validator
Setup
Check if aigent is available:
command -v aigent
With aigent CLI
If aigent is on $PATH, use the CLI for authoritative validation:
aigent validate <skill-directory>
Exit code 0 means valid. Non-zero means errors. Warnings are printed but do not cause failure.
If a SKILL.md file path is provided instead of a directory, aigent
automatically resolves to the parent directory.
Without aigent CLI
If aigent is not available, validate manually by reading the SKILL.md
and checking these rules:
Frontmatter checks
- File starts and ends with
---delimiters namefield: present, string, ≤ 64 chars, lowercase + hyphens + numbers only, no consecutive hyphens, no leading/trailing hyphens, no reserved words ("anthropic", "claude"), no XML tags, matches directory namedescriptionfield: present, string, non-empty, ≤ 1024 chars, no XML tags
Optional field checks
compatibility: if present, string, ≤ 500 charslicense: if present, stringallowed-tools: if present, string
Body checks
- Body ≤ 500 lines (warning, not error)
Report format
Report each issue on its own line. Prefix warnings with "warning: ".
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.
- 1mo ago First seen · 62 lines · 59 tokens per session scan A 3fd60a22faca
aigent-validator is a skill published in the GitHub repository wkusnierczyk/aigent (4 stars, last pushed 7mo ago), licensed Apache-2.0. It adds 59 tokens to every session and 424 once invoked, about $0.0002 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.
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