Borrowing it
Nothing to install: this file belongs to moeru-ai/auv. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/moeru-ai/auv/main/.agents/skills/m12-lifecycle/SKILL.mdgit clone --depth 1 https://github.com/moeru-ai/auvWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/moeru-ai/auv/m12-lifecycle)<a href="https://agentmods.dev/skills/moeru-ai/auv/m12-lifecycle"><img src="https://agentmods.dev/badge/skills/moeru-ai/auv/m12-lifecycle/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/moeru-ai/auv/m12-lifecycle"><img src="https://agentmods.dev/badge/skills/moeru-ai/auv/m12-lifecycle.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 1 finding, up to high
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- high YARA Match · line 124 YARA rule matched a hack tool or exploit indicator (offensive tools, reconnaissance, privilege escalation, or exploit frameworks).Fix: Remove offensive tool references and exploit code. Legitimate agent skills should not contain penetration testing tools, exploit frameworks, or reconnaissance utilities.
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00094 | $0.01078 |
| Opus 5.5 | $0.00038 | $0.00431 |
| Sonnet 5.5 | $0.00019 | $0.00216 |
| Haiku 4.5 | $0.00009 | $0.00108 |
Grade A, and why
m12-lifecycle scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 178 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Resource Lifecycle
Layer 2: Design Choices
Core Question
When should this resource be created, used, and cleaned up?
Before implementing lifecycle:
- What's the resource's scope?
- Who owns the cleanup responsibility?
- What happens on error?
Lifecycle Pattern → Implementation
| Pattern | When | Implementation |
|---|---|---|
| RAII | Auto cleanup | Drop trait |
| Lazy init | Deferred creation | OnceLock, LazyLock |
| Pool | Reuse expensive resources | r2d2, deadpool |
| Guard | Scoped access | MutexGuard pattern |
| Scope | Transaction boundary | Custom struct + Drop |
Thinking Prompt
Before designing lifecycle:
-
What's the resource cost?
- Cheap → create per use
- Expensive → pool or cache
- Global → lazy singleton
-
What's the scope?
- Function-local → stack allocation
- Request-scoped → passed or extracted
- Application-wide → static or Arc
-
What about errors?
- Cleanup must happen → Drop
- Cleanup is optional → explicit close
- Cleanup can fail → Result from close
Trace Up ↑
To domain constraints (Layer 3):
"How should I manage database connections?"
↑ Ask: What's the connection cost?
↑ Check: domain-* (latency requirements)
↑ Check: Infrastructure (connection limits)
| Question | Trace To | Ask |
|---|---|---|
| Connection pooling | domain-* | What's acceptable latency? |
| Resource limits | domain-* | What are infra constraints? |
| Transaction scope | domain-* | What must be atomic? |
Trace Down ↓
To implementation (Layer 1):
"Need automatic cleanup"
↓ m02-resource: Implement Drop
↓ m01-ownership: Clear owner for cleanup
"Need lazy initialization"
↓ m03-mutability: OnceLock for thread-safe
↓ m07-concurrency: LazyLock for sync
"Need connection pool"
↓ m07-concurrency: Thread-safe pool
↓ m02-resource: Arc for sharing
Quick Reference
| Pattern | Type | Use Case |
|---|---|---|
| RAII | Drop trait |
Auto cleanup on scope exit |
| Lazy Init | OnceLock, LazyLock |
Deferred initialization |
| Pool | r2d2, deadpool |
Connection reuse |
| Guard | MutexGuard |
Scoped lock release |
| Scope | Custom struct | Transaction boundaries |
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 2mo ago First seen · 178 lines · 94 tokens per session scan A db6f0af49dcf
m12-lifecycle is a skill published in the GitHub repository moeru-ai/auv (203 stars, last pushed 2d ago), licensed Apache-2.0. It adds 94 tokens to every session and 1,078 once invoked, about $0.0004 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
m12-lifecycle compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| m12-lifecyclemoeru-ai/auv | Skill | 203 | 2d ago | Apache-2.0 | A | 94 | Claude Code |
| rust-patternsaffaan-m/ECC | Skill | 298k | 4d ago | MIT | A | 28 | Claude Code, Kiro |
| update-v8-versionopeninterpreter/openinterpreter | Skill | 69k | 2d ago | Apache-2.0 | A | 86 | Codex |
| dd-code-generationDataDog/pup | Skill | 1.0k | yesterday | Apache-2.0 | A | 16 | Claude Code |
| omh-rustrlaope/oh-my-hermes | Skill | 5.2k | today | MIT | A | 74 | Claude Code, Codex |
| swiftidebosun-ai/swiftide | Skill | 802 | yesterday | MIT | A | 47 | Claude Code, Codex |
| azure-keyvault-secrets-rustbenjaminasterA/antigravity-awesome-skills | Skill | 461 | yesterday | MIT | A | 0 | Claude Code, Codex |