Minimal proxy-based state management for React and vanilla JavaScript with fine-grained reactivity.
Create detailed user stories, acceptance criteria, and feature specs
Example: Generate user stories for 'password reset feature' with acceptance criteria, edge cases, and test scenarios
Reduce spec writing time by 50%, ensure comprehensive coverage
Research competitors, compare features, identify gaps
Example: Analyze 5 competitor products, create feature comparison matrix, suggest differentiation opportunities
Complete competitive research in 2 hours instead of 2 days
Evaluate features using frameworks (RICE, ICE, Kano) and create prioritized backlogs
Example: Score 20 feature ideas using RICE framework, generate prioritized roadmap with rationale
Make data-driven prioritization decisions faster
Draft PRDs, status updates, and stakeholder presentations
Example: Create executive summary of Q3 roadmap, monthly progress report, feature launch announcement
Save 3-5 hours/week on communication overhead
Submit your Claude Code skill and start earning
epx add hairyf/skills --skill valtioCompatible with
Supported agents
Core API includes proxy() for creating reactive state objects, useSnapshot() for render-optimized React hooks, and subscribe() for listening to changes anywhere in your app
Utilities cover observable Map and Set proxies, property-level subscriptions, Redux DevTools integration, and unproxied references for special objects
Supports React 18+, Suspense, and computed properties via getter
AI-first code editor with Composer
Before installing skills in Cursor, ensure your development environment meets these requirements:
node --versionvaltioExecute the skills CLI command in your project's root directory to begin installation:
epx add hairyf/skills --skill valtioFetches valtio from hairyf/skills and configures it for Cursor.
The CLI shows a list of agents. Use arrow keys and space to select Cursor:
Confirm successful installation by checking the skill directory location:
.cursor/skills/valtio
Restart Cursor to activate valtio. Access via /valtioin your agent's command palette.
Learn more:View source on GitHubSkills CLI docsAbout CursorWhat are agent skills?
Time estimate: 30-60 minutes to see productivity improvements
Prerequisites
Steps
Common Pitfalls
✓ Do
✗ Don't
💡 Pro Tips
✓ Use when
Use for user story writing, competitive research, roadmap prioritization, stakeholder communication, and PRD drafting. Best for reducing repetitive documentation and research work.
✗ Avoid when
Avoid for strategic product vision (requires deep customer empathy), pricing decisions (needs market and financial expertise), or when face-to-face customer discovery is more valuable than speed.
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valtio fits our agent workflows well — practical, well scoped, and easy to wire into existing repos.
valtio is among the better-maintained entries we tried; worth keeping pinned for repeat workflows.
I recommend valtio for anyone iterating fast on agent tooling; clear intent and a small, reviewable surface area.
Keeps context tight: valtio is the kind of skill you can hand to a new teammate without a long onboarding doc.
Registry listing for valtio matched our evaluation — installs cleanly and behaves as described in the markdown.
We added valtio from the explainx registry; install was straightforward and the SKILL.md answered most questions upfront.
Solid pick for teams standardizing on skills: valtio is focused, and the summary matches what you get after install.
Useful defaults in valtio — fewer surprises than typical one-off scripts, and it plays nicely with `npx skills` flows.
Keeps context tight: valtio is the kind of skill you can hand to a new teammate without a long onboarding doc.
Solid pick for teams standardizing on skills: valtio is focused, and the summary matches what you get after install.
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