m12-lifecycle SKILL.md skillA
m12-lifecycle from moeru-ai/auv is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add moeru-ai/auv/m12-lifecycle@git:20260725.8a8e541Pins git:20260725.8a8e541 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- moeru-ai/auv
- Path
.agents/skills/m12-lifecycle/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260725.8a8e541, committed Jul 25, 2026
- Size
- 4,417 bytes
- Repository stars
- 207
- License
- Apache-2.0
Use when designing resource lifecycles. Keywords: RAII, Drop, resource lifecycle, connection pool, lazy initialization, connection pool design, resource cleanup patterns, cleanup, scope, OnceCell, Lazy, once_cell, OnceLock, transaction, session management, when is Drop called, cleanup on error, guard pattern, scope guard, 资源生命周期, 连接池, 惰性初始化, 资源清理, RAII 模式.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# 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: 1. **What's the resource cost?** - Cheap → create per use - Expensive → pool or cache - Global → lazy singleton 2. **What's the scope?** - Function-local → stack allocation - Request-scoped → passed or extracted - Application-wide → static or Arc 3. **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): ``` …
Read the whole file at its exact version.
How to install
mdr add moeru-ai/auv/m12-lifecycle@sha256:db6f0af49dcf61daThe line at the top of this page pins the label git:20260725.8a8e541, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_5gpkz4ktdqdieizr)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Jul 25, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (4417 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
moeru-ai/auv · 207 stars · license Apache-2.0 · pushed 2026-11-07 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_5gpkz4ktdqdieizr GET https://markdownregistry.com/api/v1/resolve?ref=moeru-ai/auv/m12-lifecycle GET https://markdownregistry.com/api/v1/blob/db6f0af49dcf61dae73e343b2051dbf087a58b6621db0591612208967a1078bd
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.