shadcn-detection SKILL.md skillA

shadcn-detection from fusengine/agents is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add fusengine/agents/shadcn-detection@git:20260927.43a351c

Pins git:20260927.43a351c in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
fusengine/agents
Path
plugins/shadcn-expert/skills/shadcn-detection/SKILL.md
Versions recorded
6
Latest version
git:20260927.43a351c, committed Sep 27, 2026
First version recorded
Feb 21, 2026
Size
5,868 bytes
Repository stars
36
License
MIT

Use when determining which component base (Base UI, Radix UI or React Aria) a shadcn/ui project uses, before any component work or migration.

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

<objective>
Detects which of the three shadcn/ui component bases a project uses: Base UI (`base`, default for new projects since July 2026), Radix (`radix`, fully supported) or React Aria (`aria`, added July 2026). Authoritative signal first (`shadcn info --json` -> `config.base`), then a 5-signal weighted scan: package.json dependencies, components.json's style prefix, source import patterns, data-attribute conventions (`data-state` vs `data-open` vs `data-entering`), and the lockfile-detected package manager.

Produces a Base UI / Radix / React Aria / Mixed (migration needed) / None (fresh setup) verdict that gates every downstream shadcn component or migration task.
</objective>

# shadcn Detection

## Agent Workflow (MANDATORY)

Before detection, spawn agents in parallel, one `Agent` call each with a `name`:

1. **fuse-ai-pilot:explore-codebase** - Scan project structure
2. **fuse-ai-pilot:research-expert** - Verify latest primitive patterns

After: Use results to configure component workflow.

---

## Overview

| Feature | Description |
|---------|-------------|
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add fusengine/agents/shadcn-detection@sha256:fcfd944efb5db1bf

The line at the top of this page pins the label git:20260927.43a351c, 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_vtethqkxcyl3lyvo.svg)](https://markdownregistry.com/a/art_vtethqkxcyl3lyvo)

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

Versions

The registry has recorded 6 versions of this file, between Feb 21, 2026 and Sep 27, 2026, about one every 44 days.

versioncommittedcommitsizeaudit
git:20260927.43a351c latest2026-09-27 43a351c 5,868 BA view · diff
git:20260904.5f1d30f2026-09-04 5f1d30f 3,905 BA view · diff
git:20260729.3b91eed2026-07-29 3b91eed 3,876 BA view · diff
git:20260705.ba8ee522026-07-05 ba8ee52 3,569 BA view · diff
git:20260705.8c2f9bc2026-07-05 8c2f9bc 3,567 BA view · diff
git:20260221.ef8fc892026-02-21 ef8fc89 3,467 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 (5868 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

fusengine/agents · 36 stars · license MIT · pushed 2026-10-30 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_vtethqkxcyl3lyvo
GET https://markdownregistry.com/api/v1/resolve?ref=fusengine/agents/shadcn-detection
GET https://markdownregistry.com/api/v1/blob/fcfd944efb5db1bf896fbcdd4335120f5e493b1629fc0b84c33b9b5dda2e1236

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.

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