tinyjs SKILL.md skillA

tinyjs from tarwin/tinyjsapp is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add tarwin/tinyjsapp/tinyjs@git:20261103.f84b6b6

Pins git:20261103.f84b6b6 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
tarwin/tinyjsapp
Path
skill/SKILL.md
Versions recorded
9
Latest version
git:20261103.f84b6b6, committed Nov 3, 2026
First version recorded
Oct 27, 2026
Size
14,792 bytes
Repository stars
1,409
License
MIT

Build and modify tinyjs desktop apps — tiny macOS, Windows and Linux apps with a txiki.js JavaScript backend and a native webview window. Use when working in a project with a tinyjs.json, when the user mentions tinyjs, tiny.api, or tinyjs dev/build, or when porting an Electron app to tinyjs.

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

# Building tinyjs apps

tinyjs (https://tinyjs.app, repo tarwin/tinyjsapp) makes ~6 MB desktop apps:
a **txiki.js backend** (full system access: files, sockets, processes, FFI)
+ a **native webview window** — WKWebView on macOS, WebView2 on Windows,
WebKitGTK 4.1 on Linux. They talk over a private socket — no
HTTP server, no ports. The page has no direct system access: everything
privileged crosses `tiny.api` (which the tinyjs.json `"api"` gate can
narrow), which is why anything interpolated into `innerHTML` must be
escaped. Two launcher-side paths skip that crossing, both limited to the
app's own pages and the origins `"api"` trusts: `tiny.proxyURL`'s
`tiny-media://` proxy (cross-origin http(s) reads, macOS + Linux;
`media.proxy`) and mic/camera (`media.microphone` / `media.camera`).

Current release: 0.70.3. App floors: macOS 15+ — a default build opens only
on the build Mac's CPU (`build --arch arm64|x86_64` or `--universal` for the
other); Windows 10/11 (WebView2), x64 or arm64 per the tinyjs install; Linux glibc 2.35+ (Ubuntu 22.04 / Debian 12
/ Mint 21 and up).

## Read the reference for the job at hand

| doing | read |
|---|---|
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add tarwin/tinyjsapp/tinyjs@sha256:90facb6d5157c842

The line at the top of this page pins the label git:20261103.f84b6b6, 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.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_qb4k6lie2elwn73z.svg)](https://markdownregistry.com/a/art_qb4k6lie2elwn73z)

0 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 9 versions of this file, between Oct 27, 2026 and Nov 3, 2026, more than one a day.

versioncommittedcommitsizeaudit
git:20261103.f84b6b6 latest2026-11-03 f84b6b6 14,792 BA view · diff
git:20261103.6cbd5e22026-11-03 6cbd5e2 14,792 BA view · diff
git:20261102.12ae84a2026-11-02 12ae84a 14,792 BA view · diff
git:20261101.9c60d6d2026-11-01 9c60d6d 14,792 BA view · diff
git:20261101.a2e4d432026-11-01 a2e4d43 14,792 BA view · diff
git:20261101.da4df272026-11-01 da4df27 14,792 BA view · diff
git:20261028.f0ea67d2026-10-28 f0ea67d 14,792 BA view · diff
git:20261028.633f78d2026-10-28 633f78d 14,792 BA view · diff
git:20261027.029c4282026-10-27 029c428 14,792 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (14792 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
  • pass: No script tag

Source

GitHub

tarwin/tinyjsapp · 1,409 stars · license MIT · pushed 2026-11-04 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_qb4k6lie2elwn73z
GET https://markdownregistry.com/api/v1/resolve?ref=tarwin/tinyjsapp/tinyjs
GET https://markdownregistry.com/api/v1/blob/90facb6d5157c842d26fd89bfa5a283d51239052c5aa1de8f8e537400e1dfd24

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.

More from tarwin/tinyjsapp

CLAUDE.md CLAUDE.md file
tarwin/tinyjsapp · CLAUDE.md
git:20261102.c90eb02 · audit A · 1,409 stars

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