Valtio-based reactive state management with Pinia-like API for React.
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 valtio-defineCompatible with
Supported agents
Core API includes defineStore for creating stores with state, actions, and getters, plus useStore hook for React component access
Advanced features cover subscriptions, patch operations, inline reactive JSX components via Signal, and conversion to useState-like hooks
Plugin system enables store extensions, including built-in persistent storage plugin for state hydration
Full TypeScript support with comprehensive
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AI-first code editor with Composer
Before installing skills in Cursor, ensure your development environment meets these requirements:
node --versionvaltio-defineExecute the skills CLI command in your project's root directory to begin installation:
epx add hairyf/skills --skill valtio-defineFetches valtio-define 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-define
Restart Cursor to activate valtio-define. Access via /valtio-definein 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-define has been reliable in day-to-day use. Documentation quality is above average for community skills.
I recommend valtio-define for anyone iterating fast on agent tooling; clear intent and a small, reviewable surface area.
Solid pick for teams standardizing on skills: valtio-define is focused, and the summary matches what you get after install.
We added valtio-define from the explainx registry; install was straightforward and the SKILL.md answered most questions upfront.
valtio-define is among the better-maintained entries we tried; worth keeping pinned for repeat workflows.
Solid pick for teams standardizing on skills: valtio-define is focused, and the summary matches what you get after install.
Registry listing for valtio-define matched our evaluation — installs cleanly and behaves as described in the markdown.
Keeps context tight: valtio-define is the kind of skill you can hand to a new teammate without a long onboarding doc.
I recommend valtio-define for anyone iterating fast on agent tooling; clear intent and a small, reviewable surface area.
valtio-define reduced setup friction for our internal harness; good balance of opinion and flexibility.
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