m09-domain SKILL.md skillA
m09-domain 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/m09-domain@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/m09-domain/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260725.8a8e541, committed Jul 25, 2026
- Size
- 4,256 bytes
- Repository stars
- 202
- License
- Apache-2.0
CRITICAL: Use for domain modeling. Triggers: domain model, DDD, domain-driven design, entity, value object, aggregate, repository pattern, business rules, validation, invariant, 领域模型, 领域驱动设计, 业务规则.
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
# Domain Modeling > **Layer 2: Design Choices** ## Core Question **What is this concept's role in the domain?** Before modeling in code, understand: - Is it an Entity (identity matters) or Value Object (interchangeable)? - What invariants must be maintained? - Where are the aggregate boundaries? --- ## Domain Concept → Rust Pattern | Domain Concept | Rust Pattern | Ownership Implication | |----------------|--------------|----------------------| | Entity | struct + Id | Owned, unique identity | | Value Object | struct + Clone/Copy | Shareable, immutable | | Aggregate Root | struct owns children | Clear ownership tree | | Repository | trait | Abstracts persistence | | Domain Event | enum | Captures state changes | | Service | impl block / free fn | Stateless operations | --- ## Thinking Prompt Before creating a domain type: 1. **What's the concept's identity?** - Needs unique identity → Entity (Id field) - Interchangeable by value → Value Object (Clone/Copy) 2. **What invariants must hold?** - Always valid → private fields + validated constructor - Transition rules → type state pattern 3. **Who owns this data?** - Single owner (parent) → owned field …
Read the whole file at its exact version.
How to install
mdr add moeru-ai/auv/m09-domain@sha256:a05f32b475b01d63The 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_qwgg2d3oewbtvdji)
2 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 (4256 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 · 202 stars · license Apache-2.0 · pushed 2026-11-04 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_qwgg2d3oewbtvdji GET https://markdownregistry.com/api/v1/resolve?ref=moeru-ai/auv/m09-domain GET https://markdownregistry.com/api/v1/blob/a05f32b475b01d630d54a38a4b9942499b8ea873bc6d2627144fcd8b85b8b53a
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.