principle-model-the-domain SKILL.md skillA

This file is byte-identical to the first copy the registry indexed. Same content hash, so the same checks give both the same grade.

principle-model-the-domain from j-star-films-studios/vibecode-protocol-suite is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

mdr add j-star-films-studios/vibecode-protocol-suite/principle-model-the-domain@git:20260821.1b830a3

Pins git:20260821.1b830a3 in mdr.lock. Pin the fingerprint instead.

Audit grade

A, 17 of 17 checks passed

Kind

SKILL.md skill

Repository

j-star-films-studios/vibecode-protocol-suite

Path

assets/.agent/skills/engineering-principles/model-the-domain/SKILL.md

Versions recorded

1

Latest version

git:20260821.1b830a3, committed Aug 21, 2026

Size

2,127 bytes

Repository stars

26

License

ISC

Apply when writing stateful logic, or when code branches a lot or repeats a shape assumption across files. Encode the domain in a structure instead of scattered conditionals.

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

# Model the Domain

Encode the real domain in a data structure instead of scattering it across conditionals.

**Why:** Scattered booleans, repeated shape assumptions, and branching spread across files are accidental complexity. A structure that matches the domain makes invalid states unrepresentable and deletes branches. Choosing it at write time is cheap; recovering it later reads as a refactor and gets deferred.

**Reach for structures like these:**

- A state machine instead of scattered booleans, phases, or lifecycle checks.
- A typed object/model instead of loose parameters or repeated shape assumptions.
- A map, registry, lookup table, or discriminated union instead of branching spread across files.
- A reducer or command/event model instead of ad hoc state mutations.
- A module organized around one body of domain knowledge instead of a sequence such as load, validate, transform, and save. Execution order is not ownership.
- A small module boundary that gathers repeated behavior, ownership, or invariants.
- A queue, cache, index, graph/tree, or normalized collection where the data access pattern calls for it.
…

Read the whole file at its exact version.

How to install

mdr add j-star-films-studios/vibecode-protocol-suite/principle-model-the-domain@sha256:6b359783c5c9be87

[![mdr](https://markdownregistry.com/badge/art_eiwpfabuahwlf5li.svg)](https://markdownregistry.com/a/art_eiwpfabuahwlf5li)

Versions

The registry has recorded 1 version of this file, committed on Aug 21, 2026.

Audit of the latest version

Source

API

GET https://markdownregistry.com/api/v1/artifacts/art_eiwpfabuahwlf5li
GET https://markdownregistry.com/api/v1/resolve?ref=j-star-films-studios/vibecode-protocol-suite/principle-model-the-domain
GET https://markdownregistry.com/api/v1/blob/6b359783c5c9be87860d0999321e864940ff17729b9f9a27f38abae449640022

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.

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