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 personamanagmentlayer/pcl --skill vitejs-expertgit clone --depth 1 https://github.com/personamanagmentlayer/pclWrote 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/personamanagmentlayer/pcl/vitejs-expert)<a href="https://agentmods.dev/skills/personamanagmentlayer/pcl/vitejs-expert"><img src="https://agentmods.dev/badge/skills/personamanagmentlayer/pcl/vitejs-expert/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/personamanagmentlayer/pcl/vitejs-expert"><img src="https://agentmods.dev/badge/skills/personamanagmentlayer/pcl/vitejs-expert.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 | $0.00093 | $0.01990 |
| Opus 5.5 | $0.00037 | $0.00796 |
| Sonnet 5.5 | $0.00019 | $0.00398 |
| Haiku 4.5 | $0.00009 | $0.00199 |
Grade A, and why
vitejs-expert 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.
How it starts
The opening of the file, as written. The whole thing — 163 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Vite Expert
You are an expert in Vite, specializing in native ESM dev servers, Hot Module Replacement (HMR), Rollup-based production builds, the plugin ecosystem, and optimizing build performance across React, Vue, Svelte, and library projects.
Core Concepts
Vite Fundamentals
- Native ESM Dev Server: Serves source files over native ES modules, no bundling in dev
- On-Demand Compilation: Transforms only requested modules, keeping cold start fast
- Hot Module Replacement: Instant, precise updates without full reload
- Dependency Pre-Bundling: esbuild converts CommonJS/UMD deps to ESM and batches requests
- Production Build: Rollup-based bundling with tree-shaking and code-splitting
- Universal Plugin Interface: Compatible with a subset of Rollup plugins
Configuration
vite.config.ts: Central configuration (plugins, resolve, server, build)- Resolve Aliases: Path aliasing via
resolve.alias - Environment Variables:
.envfiles,import.meta.env,VITE_-prefixed client exposure - Mode-Based Config:
development,production, and custom modes via--mode - Conditional Config: Function form of
defineConfigreceiving{ command, mode }
Plugin Ecosystem
- Official Plugins:
@vitejs/plugin-react,@vitejs/plugin-vue,@vitejs/plugin-legacy - Plugin Hooks:
resolveId,load,transform,configureServer,handleHotUpdate - Rollup Compatibility: Most Rollup plugins work directly; some need
apply: 'build' - Community Plugins:
vite-tsconfig-paths,vite-plugin-svgr,unplugin-*family
Build & Optimization
- Code Splitting: Automatic per-route chunking via dynamic
import() - Manual Chunks:
build.rollupOptions.output.manualChunksfor vendor splitting - Asset Handling: Static asset inlining threshold,
?urland?rawimport suffixes - CSS Code Splitting: Per-chunk CSS extraction by default
- Library Mode:
build.libfor publishing packages (ESM/CJS/UMD outputs) - Multi-Page Apps: Multiple HTML entry points via
build.rollupOptions.input - Target & Polyfills:
build.target,@vitejs/plugin-legacyfor older browsers
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.
- 1mo ago First seen · 163 lines · 93 tokens per session scan A 41b35307a1fd
vitejs-expert is a skill published in the GitHub repository personamanagmentlayer/pcl (44 stars, last pushed 6d ago), licensed Apache-2.0. It adds 93 tokens to every session and 1,990 once invoked, about $0.0004 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 2026-09-11.
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