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frontend SKILL.md skillA

frontend from darknecrocities/skillbuilder is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned

mdr add darknecrocities/skillbuilder/frontend@git:20261025.8aa06bd

Pins git:20261025.8aa06bd in mdr.lock. Pin the fingerprint instead.

Audit grade: A, 17 of 17 checks passed
Kind: SKILL.md skill
Repository: darknecrocities/skillbuilder
Path: skills/frontend/SKILL.md
Versions recorded: 2
Latest version: git:20261025.8aa06bd, committed Oct 25, 2026
First version recorded: Oct 25, 2026
Size: 5,622 bytes
Repository stars: 13
License: none declared

Frontend architecture, state management, and lifecycle engineering skill. Governs React 19, Next.js, and Flutter with clean boundary isolation.

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

# Frontend Architecture & State Management (`/frontend`)

> **Philosophy**: *Keep components pure. Isolate side effects. Manage state deliberately. Handle errors at the boundary. Never leak business logic into render trees.*

This skill enforces high-performance client architecture across React 19, Next.js App Router, TypeScript, and modern web applications.

---

## 1. Architecture Tiers & Component Separation

```mermaid
flowchart TD
    subgraph Server["Server Layer"]
        A["React Server Component (RSC)"]
        B["Server Actions (Zod-validated)"]
    end
    subgraph ClientData["Client Data & State"]
        C["TanStack Query / SWR / URL State"]
        D["Optimistic State (useOptimistic)"]
    end
    subgraph UI["Pure Presentation"]
        E["Stateless Presentational Components"]
        F["Error Boundary & Suspense Skeletons"]
    end
    A --> C
    B --> D
    C --> D
    D --> E
    E --> F
```

### 1.1 Clean Boundary Separation Rules
1. **Server Components by Default**: In Next.js App Router, all components are React Server Components (RSC) unless interactive hooks (`useState`, `useEffect`, `useRef`, browser events) are strictly required.
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint

mdr add darknecrocities/skillbuilder/frontend@sha256:4f4d3e5954cf3879

The line at the top of this page pins the label git:20261025.8aa06bd, 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](https://markdownregistry.com/badge/art_safx6adk5ikctsbd.svg)](https://markdownregistry.com/a/art_safx6adk5ikctsbd)

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

Versions

The registry has recorded 2 versions of this file, all committed on Oct 25, 2026.

version	committed	commit	size	audit
git:20261025.8aa06bd latest	2026-10-25	8aa06bd	5,622 B	A	view · diff
git:20261025.e435ca4	2026-10-25	e435ca4	2,314 B	A	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 (5622 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

darknecrocities/skillbuilder · 13 stars · license none declared · pushed 2026-10-29 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_safx6adk5ikctsbd
GET https://markdownregistry.com/api/v1/resolve?ref=darknecrocities/skillbuilder/frontend
GET https://markdownregistry.com/api/v1/blob/4f4d3e5954cf387985f83677fdc64bbe1fcbccdc7f94747faca3af03feb06e55

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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