適格請求書等保存方式（インボイス制度）に関する包括的な知識ベース。
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 kazukinagata/shinkoku --skill invoice-systemCompatible with
Supported agents
制度の概要、記載要件、経過措置、仕入税額控除ルール、登録判断を支援する。
AI-first code editor with Composer
Before installing skills in Cursor, ensure your development environment meets these requirements:
node --versioninvoice-systemExecute the skills CLI command in your project's root directory to begin installation:
epx add kazukinagata/shinkoku --skill invoice-systemFetches invoice-system from kazukinagata/shinkoku 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/invoice-system
Restart Cursor to activate invoice-system. Access via /invoice-systemin 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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Keeps context tight: invoice-system is the kind of skill you can hand to a new teammate without a long onboarding doc.
We added invoice-system from the explainx registry; install was straightforward and the SKILL.md answered most questions upfront.
invoice-system is among the better-maintained entries we tried; worth keeping pinned for repeat workflows.
Solid pick for teams standardizing on skills: invoice-system is focused, and the summary matches what you get after install.
invoice-system has been reliable in day-to-day use. Documentation quality is above average for community skills.
I recommend invoice-system for anyone iterating fast on agent tooling; clear intent and a small, reviewable surface area.
Useful defaults in invoice-system — fewer surprises than typical one-off scripts, and it plays nicely with `npx skills` flows.
invoice-system fits our agent workflows well — practical, well scoped, and easy to wire into existing repos.
invoice-system is among the better-maintained entries we tried; worth keeping pinned for repeat workflows.
Useful defaults in invoice-system — fewer surprises than typical one-off scripts, and it plays nicely with `npx skills` flows.
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