Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add fusengine/agents --skill react-stategit clone --depth 1 https://github.com/fusengine/agentsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/fusengine/agents/react-state)<a href="https://agentmods.dev/skills/fusengine/agents/react-state"><img src="https://agentmods.dev/badge/skills/fusengine/agents/react-state/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/fusengine/agents/react-state"><img src="https://agentmods.dev/badge/skills/fusengine/agents/react-state.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 1 finding, up to high
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- high Memory Poisoning · line 114 Skill manipulates agent memory, state, or stored context. Memory corruption can alter personality, override safety rules, or cause unpredictable behavior.Fix: Protect agent memory and state from modification by untrusted content. Use read-only memory for critical instructions and validate all state changes.
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00028 | $0.01295 |
| Opus 5.5 | $0.00011 | $0.00518 |
| Sonnet 5.5 | $0.00006 | $0.00259 |
| Haiku 4.5 | $0.00003 | $0.00129 |
Grade A, and why
react-state scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 7d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 140 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Covers separating stores by domain (auth, cart, ui, theme) rather than one giant store, SOLID file organization (store.ts, store.interface.ts, use-store.ts), and forbidden patterns (persisting auth tokens, v4 syntax, skipping useShallow). This is the plain-React variant of Zustand (no App Router request-isolation concerns) — for Next.js App Router see nextjs-zustand, and for server state use TanStack Query instead of this skill.
Zustand for React
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:
- fuse-ai-pilot:explore-codebase - Analyze existing stores and state patterns
- fuse-ai-pilot:research-expert - Verify latest Zustand v5 docs via Context7/Exa
- mcp__context7__query-docs - Check middleware and TypeScript patterns
After implementation, run fuse-ai-pilot:sniper for validation.
Overview
When to Use
- Managing global state in React applications
- Need state shared across components
- Persisting state to localStorage/sessionStorage
- Building UI state (modals, sidebars, theme, cart)
- Replacing React Context for complex state
Why Zustand v5
| Feature | Benefit |
|---|---|
| Minimal API | Simple create() function, no boilerplate |
| React 18 native | useSyncExternalStore, no shims needed |
| TypeScript first | Full inference with currying pattern |
| Middleware stack | devtools, persist, immer composable |
| Bundle size | ~2KB gzipped, smallest state library |
| No providers | Direct store access, no Context wrapper |
What ships with it
10 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
- references/auto-selectors.md 4.1 KB
- references/installation.md 2.3 KB
- references/middleware.md 5.1 KB
- references/migration-v5.md 3.9 KB
- references/reset-state.md 4.8 KB
- references/slices.md 5.0 KB
- references/store-patterns.md 5.1 KB
- references/subscribe-api.md 5.3 KB
- references/testing.md 5.1 KB
- references/typescript.md 6.3 KB
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 7d ago Changed 9fe217bda9f2
- 1mo ago Changed e03bb86a8b00
- 1mo ago First seen · 140 lines · 28 tokens per session scan A 3bf2c06ca438
react-state is a skill published in the GitHub repository fusengine/agents (33 stars, last pushed 7d ago), licensed MIT. It adds 28 tokens to every session and 1,295 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
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