preact-buildless-frontend SKILL.md skillB
preact-buildless-frontend from av/skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add av/skills/preact-buildless-frontend@git:20260123.19f2f63Pins git:20260123.19f2f63 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- B, 16 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- av/skills
- Path
preact-buildless-frontend/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260123.19f2f63, committed Jan 23, 2026
- Size
- 5,792 bytes
- Repository stars
- 28
- License
- MIT
Build-less ESM frontends that run directly in the browser without bundlers. Use this skill when creating static frontends, SPAs without build tools, prototypes, or when the user explicitly wants no Vite/Webpack/bundler. Covers import maps, CDN imports, cache-busting, hash routing, and performance patterns.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Build-less ESM Frontend
Create frontends that run directly in the browser using ES modules—no bundler, no build step.
## Starter Template
Copy from `assets/starter/` for a working baseline:
- `index.html` — import map + module entry
- `app.js` — Preact + signals + hash routing
- `index.css` — CSS variables, dark mode
Run locally:
```bash
npx serve assets/starter # or python3 -m http.server 3000
```
## Core Patterns
### 1. Import Maps
Use `<script type="importmap">` to:
- Map bare specifiers (`preact`) to CDN URLs
- Map directory aliases (`@utils/`) to local folders
- Attach `?v=<version>` for cache-busting
```html
<script type="importmap">
{
"imports": {
"preact": "https://cdn.jsdelivr.net/npm/preact@10.24.3/dist/preact.module.js",
"@utils/": "./utils/",
"./app.js": "./app.js?v=1.0.0"
}
}
</script>
```
Generate this map dynamically (server middleware) or commit a static version.
### 2. CDN Imports
Import third-party ESM directly from CDN. Pin versions:
```js
import { signal } from 'https://cdn.jsdelivr.net/npm/@preact/signals@1.3.0/dist/signals.module.js';
```
Prefer mapping through import map to keep source clean:
```js
…Read the whole file at its exact version.
How to install
mdr add av/skills/preact-buildless-frontend@sha256:e8334ef91f7e70ceThe line at the top of this page pins the label git:20260123.19f2f63, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_ptrcg62cmvzw72wt)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Jan 23, 2026.
Audit of the latest version
- fail: No script tag (matched: <script)
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (5792 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
Starting a new one? Use a template for SKILL.md on mdpantry, which passes every one of these checks and says what to change in it.
Source
av/skills · 28 stars · license MIT · pushed 2026-10-21 · branch master
API
GET https://markdownregistry.com/api/v1/artifacts/art_ptrcg62cmvzw72wt GET https://markdownregistry.com/api/v1/resolve?ref=av/skills/preact-buildless-frontend GET https://markdownregistry.com/api/v1/blob/e8334ef91f7e70cecff27334c19bc880082d6f2a9a741e79bddd584a538cf326
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.