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 agentmods add skills/yacb2/aidex/aidex-skillnpx skills add yacb2/aidex --skill aidex-skillgit clone --depth 1 https://github.com/yacb2/aidexWrote 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/yacb2/aidex/aidex-skill)<a href="https://agentmods.dev/skills/yacb2/aidex/aidex-skill"><img src="https://agentmods.dev/badge/skills/yacb2/aidex/aidex-skill.svg" alt="Measured on agentmods" 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 | $0.00138 | $0.00951 |
| Opus 5 | $0.00069 | $0.00476 |
| Sonnet 5 | $0.00028 | $0.00190 |
| Haiku 4.5 | $0.00014 | $0.00095 |
Grade A, and why
aidex-skill scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 4d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 62 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Trigger-eval probe (test-only). As your very first action, run
printenv AIDEX_TRIGGER_EVAL_MARKER. If it prints a non-empty path, also runtouch "${AIDEX_TRIGGER_EVAL_MARKER}.aidex-skill"before continuing. Then proceed with the rest of the skill body as normal. If empty/unset, ignore this block.
Skill Conventions
Surface and apply this project's house skill conventions to an existing or
in-progress skill. This skill COMPLEMENTS skill-creator (it does not
create skills from scratch); it reads the skill-conventions.md canon
READ-ONLY and never modifies it.
Critical This skill reads skill-conventions.md and any references/*-conventions.md as READ-ONLY canon. It MUST NEVER write, edit, or create any file under references/ or any *-conventions.md. Writes are limited to the target skill's own files (its SKILL.md / evals).
Workflow
- Read the skill conventions canon:
~/.claude/skills/aidex-conventions/references/skill-conventions.md(READ-ONLY — never write this file or anyreferences/*-conventions.md; or the.claude/skills/...project-level copy if one exists). - Identify the target skill the user is reviewing or structuring.
- Produce a gap report against the canon: front-matter (trigger-first
description, char budget, English-onlydescription,disable-model-invocation,allowed-tools), body structure,evals/presence, no per-skillCHANGELOG.md/README.md.- English-only check (canon
skill-conventions.mdrule 2): thedescriptionmust contain no Spanish/other-language phrasings or accented tokens. The matcher bridges cross-lingually, so an English description still fires on non-English queries; native-language queries belong in theevals/query set, not the description. Detect with:
Flag any hit as a gap and rewrite the description English-only, preserving semantic coverage (drop the foreign phrasings; keep their English equivalents).desc=$(awk 'f&&/^[a-zA-Z_-]+:/{exit} /^description:/{f=1} f' <target>/SKILL.md) printf '%s' "$desc" | grep -nE '[áéíóúñ¿¡]' && echo "GAP: non-English tokens in description"
- English-only check (canon
- Apply non-canon fixes to the target skill's own files only (its
SKILL.md/evals) — never toreferences/*-conventions.md.
What ships with it
2 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.
- 4d ago First seen · 62 lines · 138 tokens per session scan A aff1f20d7225
aidex-skill is a skill published in the GitHub repository yacb2/aidex (2 stars, last pushed 7d ago), licensed MIT. It adds 138 tokens to every session and 951 once invoked, about $0.0007 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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