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/adambien/airails/web-latestnpx skills add AdamBien/airails --skill web-latestgit clone --depth 1 https://github.com/AdamBien/airailsWrote 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/adambien/airails/web-latest)<a href="https://agentmods.dev/skills/adambien/airails/web-latest"><img src="https://agentmods.dev/badge/skills/adambien/airails/web-latest.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 5.1 | $0.00204 | $0.01122 |
| Opus 5 | $0.00102 | $0.00561 |
| Sonnet 5 | $0.00041 | $0.00224 |
| Haiku 4.5 | $0.00020 | $0.00112 |
Grade A, and why
web-latest 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 6d 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 — 78 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Use the most recent web platform features freely in $ARGUMENTS. This is a modifier skill — it changes exactly one thing about the composed stack: the browser-support policy.
Purpose & Precedence
Experiments and PoCs exist to explore what the newest browsers can do; a support policy
designed for production audiences would defeat their purpose. When composed with
/web-static, /web-sprinkles, or /web-components (and their shared /web-conventions), this skill overrides:
- the Baseline Policy section of
/web-conventions - the Baseline check of
/web-static's verification loop (replaced below) - any
@supportsor existence-check requirements the stack skills impose on Newly Available features — feature detection becomes optional
Everything else in the composed skills remains binding. Explicitly not relaxed:
- accessibility rules, including
prefers-reduced-motionandprefers-color-scheme - semantic HTML and heading hierarchy
/web-static's no-JavaScript constraint/web-sprinkles' enhancement contract — detection becomes optional, but a page whose content depends on an experimental API is broken, not experimental/web-components' dependency and architecture rules- design-token discipline
A PoC that is inaccessible or unsemantic demonstrates nothing about the feature it showcases.
Relaxed Policy
- any Baseline status is usable: Widely Available, Newly Available, Limited availability, and experimental or flag-gated features
- no
@supportswrappers required, no fallbacks required, no graceful-degradation argument needed - the view-transition exemptions carved out in
/web-staticand/web-componentsare subsumed by this policy — no special casing needed - when a feature exists in several maturity stages (e.g. a spec revision only Canary ships), prefer the newest form that runs in at least one stable or pre-release browser
Honesty Stays
The policy changes; the lookup discipline does not. A PoC is only useful if the viewer can actually run it, so:
What ships with it
1 file 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.
- 6d ago First seen · 78 lines · 204 tokens per session scan A 05bd28cbc82c
web-latest is a skill published in the GitHub repository AdamBien/airails (48 stars, last pushed 2d ago), licensed MIT. It adds 204 tokens to every session and 1,122 once invoked, about $0.0010 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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