m09-domain skillA
m09-domain is agent-read markdown (skill) from moeru-ai/auv: 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.
Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns 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@git:20260725.8a8e541mdr add moeru-ai/auv/m09-domain@sha256:a05f32b475b01d63Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.
[](https://markdownregistry.com/a/art_qwgg2d3oewbtvdji)
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Versions
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 · 50 stars · license Apache-2.0 · pushed 2026-09-23 · 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
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