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 boussadjra/vuestrata --skill vuestrata-auth-contract-checksgit clone --depth 1 https://github.com/boussadjra/vuestrataWrote 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/boussadjra/vuestrata/vuestrata-auth-contract-checks)<a href="https://agentmods.dev/skills/boussadjra/vuestrata/vuestrata-auth-contract-checks"><img src="https://agentmods.dev/badge/skills/boussadjra/vuestrata/vuestrata-auth-contract-checks/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/boussadjra/vuestrata/vuestrata-auth-contract-checks"><img src="https://agentmods.dev/badge/skills/boussadjra/vuestrata/vuestrata-auth-contract-checks.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00030 | $0.00229 |
| Opus 5 | $0.00015 | $0.00114 |
| Sonnet 5 | $0.00006 | $0.00046 |
| Haiku 4.5 | $0.00003 | $0.00023 |
Grade A, and why
vuestrata-auth-contract-checks 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 12d 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
Vuestrata Auth Contract Checks
Use this skill when auth work could introduce contract drift.
Check
- canonical auth env key usage
- adapter selection in runtime, docs, and
.env.example useAuth()flows: login, register, logout, current user, refresh, social, magic link- mock handlers and auth pages
- auth-related tests and docs
Rules
- Audit
src/modules/auth/composables/useAuth.ts,src/modules/app/config/app.config.ts,src/modules/auth/mocks/auth.handlers.ts, auth pages,.env.example,README.md, anddocs/6.configuration/. - Treat env-key or adapter-name drift as a regression.
- Fix the source of drift, not just the docs.
- Do not finish auth work unless runtime, tests, mocks, env examples, and docs agree.
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.
- 12d ago First seen · 25 lines · 30 tokens per session scan A 3f82f83df1dc
vuestrata-auth-contract-checks is a skill published in the GitHub repository boussadjra/vuestrata (111 stars, last pushed 5d ago), licensed MIT. It adds 30 tokens to every session and 229 once invoked, about $0.0002 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 2026-08-30.
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