Layer 1: Language Mechanics
Works with
AI-first code editor with Composer
Before installing skills in Cursor, ensure your development environment meets these requirements:
node --versionm01-ownershipExecute the skills CLI command in your project's root directory to begin installation:
Fetches m01-ownership from actionbook/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 m01-ownership. Access via /m01-ownership in 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
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Layer 1: Language Mechanics
Who should own this data, and for how long?
Before fixing ownership errors, understand the data's role:
| Error | Don't Just Say | Ask Instead |
|---|---|---|
| E0382 | "Clone it" | Who should own this data? |
| E0597 | "Extend lifetime" | Is the scope boundary correct? |
| E0506 | "End borrow first" | Should mutation happen elsewhere? |
| E0507 | "Clone before move" | Why are we moving from a reference? |
| E0515 | "Return owned" | Should caller own the data? |
| E0716 | "Bind to variable" | Why is this temporary? |
| E0106 | "Add 'a" | What is the actual lifetime relationship? |
Before fixing an ownership error, ask:
What is this data's domain role?
Is the ownership design intentional?
Fix symptom or redesign?
When errors persist, trace to design layer:
E0382 (moved value)
↑ Ask: What design choice led to this ownership pattern?
↑ Check: m09-domain (is this Entity or Value Object?)
↑ Check: domain-* (what constraints apply?)
| Persistent Error | Trace To | Question |
|---|---|---|
| E0382 repeated | m02-resource | Should use Arc/Rc for sharing? |
| E0597 repeated | m09-domain | Is scope boundary at right place? |
| E0506/E0507 | m03-mutability | Should use interior mutability? |
From design decisions to implementation:
"Data needs to be shared immutably"
↓ Use: Arc<T> (multi-thread) or Rc<T> (single-thread)
"Data needs exclusive ownership"
↓ Use: move semantics, take ownership
"Data is read-only view"
↓ Use: &T (immutable borrow)
| Pattern | Ownership | Cost | Use When |
|---|---|---|---|
| Move | Transfer | Zero | Caller doesn't need data |
&T |
Borrow | Zero | Read-only access |
&mut T |
Exclusive borrow | Zero | Need to modify |
clone() |
Duplicate | Alloc + copy | Actually need a copy |
Rc<T> |
Shared (single) | Ref count | Single-thread sharing |
Arc<T> |
Shared (multi) | Atomic ref count | Multi-thread sharing |
Cow<T> |
Clone-on-write | Alloc if mutated | Might modify |
| Error | Cause | Quick Fix |
|---|---|---|
| E0382 | Value moved | Clone, reference, or redesign ownership |
| E0597 | Reference outlives owner | Extend owner scope or restructure |
| E0506 | Assign while borrowed | End borrow before mutation |
| E0507 | Move out of borrowed | Clone or use reference |
| E0515 | Return local reference | Return owned value |
| E0716 | Temporary dropped | Bind to variable |
| E0106 | Missing lifetime | Add 'a annotation |
| Anti-Pattern | Why Bad | Better |
|---|---|---|
.clone() everywhere |
Hides design issues | Design ownership properly |
| Fight borrow checker | Increases complexity | Work with the compiler |
'static for everything |
Restricts flexibility | Use appropriate lifetimes |
Leak with Box::leak |
Memory leak | Proper lifetime design |
| When | See |
|---|---|
| Need smart pointers | m02-resource |
| Need interior mutability | m03-mutability |
| Data is domain entity | m09-domain |
| Learning ownership concepts | m14-mental-model |
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
pproenca/dot-skills
mattpocock/skills
Keeps context tight: m01-ownership is the kind of skill you can hand to a new teammate without a long onboarding doc.
m01-ownership reduced setup friction for our internal harness; good balance of opinion and flexibility.
I recommend m01-ownership for anyone iterating fast on agent tooling; clear intent and a small, reviewable surface area.
Registry listing for m01-ownership matched our evaluation — installs cleanly and behaves as described in the markdown.
We added m01-ownership from the explainx registry; install was straightforward and the SKILL.md answered most questions upfront.
Useful defaults in m01-ownership — fewer surprises than typical one-off scripts, and it plays nicely with `npx skills` flows.
m01-ownership has been reliable in day-to-day use. Documentation quality is above average for community skills.
m01-ownership is among the better-maintained entries we tried; worth keeping pinned for repeat workflows.
Useful defaults in m01-ownership — fewer surprises than typical one-off scripts, and it plays nicely with `npx skills` flows.
Solid pick for teams standardizing on skills: m01-ownership is focused, and the summary matches what you get after install.
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