Borrowing it
Nothing to install: this file belongs to garfiec/Librechat-Mobile. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/garfiec/Librechat-Mobile/develop/.claude/skills/update-web-assets/SKILL.mdgit clone --depth 1 https://github.com/garfiec/Librechat-MobileWrote 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/garfiec/librechat-mobile/update-web-assets)<a href="https://agentmods.dev/skills/garfiec/librechat-mobile/update-web-assets"><img src="https://agentmods.dev/badge/skills/garfiec/librechat-mobile/update-web-assets/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/garfiec/librechat-mobile/update-web-assets"><img src="https://agentmods.dev/badge/skills/garfiec/librechat-mobile/update-web-assets.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 | $0.00124 | $0.01732 |
| Opus 5 | $0.00062 | $0.00866 |
| Sonnet 5 | $0.00025 | $0.00346 |
| Haiku 4.5 | $0.00012 | $0.00173 |
Grade A, and why
update-web-assets 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 9d 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 — 139 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Update vendored web assets
The artifact, diagram and math renderers are WebViews, and every script they execute ships
inside the app. scripts/web-assets.json is the registry; scripts/vendor-web-assets.py
moves the bytes; scripts/web-assets.lock.json records a sha256 per file and CI verifies it.
Read scripts/web-assets.json before doing anything. Every entry carries a
pin_reason, and several of them are load-bearing rather than informational — two pins
must NOT be moved to the newest version, and the reason is in the file, not in this skill.
What makes this different from a Gradle dependency bump
A wrong version here does not fail the build, fail a test, or throw anything Kotlin can catch. The failure happens inside the WebView, and the usual shape of it is a blank box or a feature that quietly stops working. Both libraries this system replaced were already broken that way before anyone noticed:
- marked deleted its
highlightoption in v5. Passing one tosetOptionsis accepted and silently ignored, so syntax highlighting had been dead with no error anywhere. - highlight.js was being loaded from a URL that served CommonJS. In a browser
<script>that throws immediately and never defineshljs.
So: the gates below prove the wiring is consistent, and only a device proves it renders. Do not report a bump as done on green gates alone.
Phase 0 — Establish what is stale
scripts/vendor-web-assets.py --check # tree matches the lock (should be clean first)
scripts/vendor-web-assets.py --outdated # what npm has that we don't
scripts/vendor-web-assets.py --list # what each asset is for, and who uses it
--outdated prints each pin's pin_reason next to any version it reports. Read it. It is
advisory output about a registry that has opinions.
If --check fails before you have changed anything, stop and report it — someone
hand-edited a vendored file, or a repin was left half-applied. That is a finding to raise,
not a precondition to quietly re-sync away.
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.
- 9d ago First seen · 139 lines · 124 tokens per session scan A d4b987782e1c
update-web-assets is a skill published in the GitHub repository garfiec/Librechat-Mobile (89 stars, last pushed yesterday), licensed MIT. It adds 124 tokens to every session and 1,732 once invoked, about $0.0006 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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