Compile-time versus runtime polymorphism: generics, trait objects, and zero-cost abstraction patterns.
Run in your terminal
Distinguishes static dispatch (generics, impl Trait ) from dynamic dispatch ( dyn Trait ), with decision guidance on when each is appropriate based on type knowledge, performance priorities, and collection heterogeneity
Maps common type system errors (E0277, E0308, E0599, E0038) to underlying design questions rather than mechanical fixes
Covers object safety constraints, monomorphiz
AI-first code editor with Composer
Before installing skills in Cursor, ensure your development environment meets these requirements:
node --versionm04-zero-costExecute the skills CLI command in your project's root directory to begin installation:
Package manager
npx skills add https://github.com/zhanghandong/rust-skills --skill m04-zero-costFetches m04-zero-cost 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:
Restart Cursor to activate m04-zero-cost. Access via /m04-zero-costin your agent's command palette.
We perform automated surface-level scans (Gen AI Scanner, Socket, Snyk) during installation. These checks detect common vulnerabilities but do not guarantee complete security. Always review skill source code and verify the publisher's reputation before production use.
Skills execute code in your environment. Always review source, verify the publisher, and test in isolation before production.
Submit your Claude Code skill and start earning
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
Package manager
npx skills add https://github.com/zhanghandong/rust-skills --skill m04-zero-costWorks with
0
total installs
0
this week
979
GitHub stars
0
upvotes
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
Prerequisites
Time Estimate
30-60 minutes to see productivity improvements
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.
mattpocock/skills
parcadei/continuous-claude-v3
cursor/plugins
ailabs-393/ai-labs-claude-skills
ailabs-393/ai-labs-claude-skills
greedychipmunk/agent-skills
Solid pick for teams standardizing on skills: m04-zero-cost is focused, and the summary matches what you get after install.
We added m04-zero-cost from the explainx registry; install was straightforward and the SKILL.md answered most questions upfront.
Keeps context tight: m04-zero-cost is the kind of skill you can hand to a new teammate without a long onboarding doc.
Solid pick for teams standardizing on skills: m04-zero-cost is focused, and the summary matches what you get after install.
m04-zero-cost has been reliable in day-to-day use. Documentation quality is above average for community skills.
m04-zero-cost has been reliable in day-to-day use. Documentation quality is above average for community skills.
m04-zero-cost fits our agent workflows well — practical, well scoped, and easy to wire into existing repos.
m04-zero-cost is among the better-maintained entries we tried; worth keeping pinned for repeat workflows.
m04-zero-cost has been reliable in day-to-day use. Documentation quality is above average for community skills.
We added m04-zero-cost from the explainx registry; install was straightforward and the SKILL.md answered most questions upfront.
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