Design resource creation, cleanup, and scope using RAII, lazy initialization, and pooling patterns.
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 zhanghandong/rust-skills --skill m12-lifecycleCompatible with
Supported agents
Covers five lifecycle patterns: RAII with Drop trait, lazy initialization via OnceLock/LazyLock, connection pooling with r2d2/deadpool, guard-based scoped access, and transaction scope boundaries
Includes decision framework for resource cost, scope determination, and error handling during cleanup
Provides pattern templates for RAII guards and lazy singletons, plus common errors and ant
AI-first code editor with Composer
Before installing skills in Cursor, ensure your development environment meets these requirements:
node --versionm12-lifecycleExecute the skills CLI command in your project's root directory to begin installation:
epx add zhanghandong/rust-skills --skill m12-lifecycleFetches m12-lifecycle from zhanghandong/rust-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/m12-lifecycle
Restart Cursor to activate m12-lifecycle. Access via /m12-lifecyclein 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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m12-lifecycle fits our agent workflows well — practical, well scoped, and easy to wire into existing repos.
Registry listing for m12-lifecycle matched our evaluation — installs cleanly and behaves as described in the markdown.
I recommend m12-lifecycle for anyone iterating fast on agent tooling; clear intent and a small, reviewable surface area.
We added m12-lifecycle from the explainx registry; install was straightforward and the SKILL.md answered most questions upfront.
m12-lifecycle reduced setup friction for our internal harness; good balance of opinion and flexibility.
Useful defaults in m12-lifecycle — fewer surprises than typical one-off scripts, and it plays nicely with `npx skills` flows.
Keeps context tight: m12-lifecycle is the kind of skill you can hand to a new teammate without a long onboarding doc.
Registry listing for m12-lifecycle matched our evaluation — installs cleanly and behaves as described in the markdown.
Solid pick for teams standardizing on skills: m12-lifecycle is focused, and the summary matches what you get after install.
I recommend m12-lifecycle for anyone iterating fast on agent tooling; clear intent and a small, reviewable surface area.
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