nextjs-zustand skillA
nextjs-zustand is agent-read markdown (skill) from fusengine/agents: Use when implementing global state, stores, persist, or hydration in Next.js 16 App Router Client Components with Zustand v5..
Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.
What the file says
<objective>
Implements Zustand v5 client-side state management in Next.js 16 App Router: the v5 currying syntax (`create<State>()((set) => ({...}))`), Context-based stores built with `createStore` from `zustand/vanilla` + `useRef` (required in App Router to avoid state leaking between requests — never a global store), and middleware composition (devtools → persist → immer, order-sensitive for TypeScript).
Covers `skipHydration` with the persist middleware plus manual rehydration in `useEffect` to avoid SSR mismatches, `useShallow` for array/object selectors, and SOLID file organization (`store.ts`, `store-provider.tsx`, `use-store.ts`). States explicitly that Zustand is Client-Components-only — never used in Server Components (fetch data directly there instead) and never used to persist auth tokens (use httpOnly cookies). Does not cover server state caching (see nextjs-tanstack-query for that).
</objective>
# Zustand for Next.js 16
Minimal, scalable state management with React 18+ useSyncExternalStore.
## Agent Workflow (MANDATORY)
Before ANY implementation, spawn 3 agents in parallel, one `Agent` call each with a `name`:
…Read the whole file at its exact version.
How to install
mdr add fusengine/agents/nextjs-zustand@git:20260904.5f1d30fmdr add fusengine/agents/nextjs-zustand@sha256:0a3693121e02ebf7Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.
[](https://markdownregistry.com/a/art_k7ud3xfa2rkmvnll)
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Versions
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260904.5f1d30f latest | 2026-09-04 | 5f1d30f | 6,205 B | A | view · diff |
| git:20260729.3b91eed | 2026-07-29 | 3b91eed | 6,176 B | A | view · diff |
| git:20260207.0a3cd21 | 2026-02-07 | 0a3cd21 | 5,281 B | A | view · diff |
| git:20260131.ff5ceca | 2026-01-31 | ff5ceca | 5,265 B | A | view · diff |
| v1.0.0 | 2026-01-30 | 8b9a002 | 2,003 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (6205 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
fusengine/agents · 28 stars · license MIT · pushed 2026-09-24 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_k7ud3xfa2rkmvnll GET https://markdownregistry.com/api/v1/resolve?ref=fusengine/agents/nextjs-zustand GET https://markdownregistry.com/api/v1/blob/0a3693121e02ebf7654cb2901bebd58d729967d5452b64d9f3e1881c87654496
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