domain-modeling SKILL.md skillA

This file is byte-identical to the first copy the registry indexed, one of 9 indexed copies. Same content hash, so the same checks give both the same grade.

domain-modeling from kunolu/640-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

mdr add kunolu/640-skills/domain-modeling@git:20261028.4eb8b2a

Pins git:20261028.4eb8b2a in mdr.lock. Pin the fingerprint instead.

Audit grade

A, 17 of 17 checks passed

Kind

SKILL.md skill

Repository

kunolu/640-skills

Path

sbtd-workflow-onboard/assets/external-skills/stable/skills/domain-modeling/SKILL.md

Versions recorded

3

Latest version

git:20261028.4eb8b2a, committed Oct 28, 2026

First version recorded

Jul 18, 2026

Size

3,346 bytes

Repository stars

557

License

Apache-2.0

Build and sharpen a project's domain model. Use when discussing codebase terminology, writing or editing a GLOSSARY.md, or recording or editing an ADR.

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

Actively build and sharpen the project's domain model as you design. This is the *active* discipline: challenging terms, inventing edge-case scenarios, and writing the glossary and decisions down the moment they crystallise. (Merely *reading* `GLOSSARY.md` for vocabulary is not this skill: that's a one-line habit any skill can do. This skill is for when you're changing the model, not just consuming it.)

## File structure

Most repos have a single context:

```
/
├── GLOSSARY.md
├── docs/
│   └── adr/
│       ├── 0001-event-sourced-orders.md
│       └── 0002-postgres-for-write-model.md
└── src/
```

If a `GLOSSARY-MAP.md` exists at the root, the repo has multiple contexts. The map points to where each one lives:

```
/
├── GLOSSARY-MAP.md
├── docs/
│   └── adr/                          ← system-wide decisions
├── src/
│   ├── ordering/
│   │   ├── GLOSSARY.md
│   │   └── docs/adr/                 ← context-specific decisions
│   └── billing/
│       ├── GLOSSARY.md
│       └── docs/adr/
```
…

Read the whole file at its exact version.

How to install

mdr add kunolu/640-skills/domain-modeling@sha256:7b925d7b1e341a2e

[![mdr](https://markdownregistry.com/badge/art_n5jrudagpwg6o3y5.svg)](https://markdownregistry.com/a/art_n5jrudagpwg6o3y5)

Versions

The registry has recorded 3 versions of this file, between Jul 18, 2026 and Oct 28, 2026, about one every 51 days.

Audit of the latest version

Source

API

GET https://markdownregistry.com/api/v1/artifacts/art_n5jrudagpwg6o3y5
GET https://markdownregistry.com/api/v1/resolve?ref=kunolu/640-skills/domain-modeling
GET https://markdownregistry.com/api/v1/blob/7b925d7b1e341a2eeae33ad68a8a8c0ab889a38ddd22a7598e4c240e5a7556a3

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.

More from kunolu/640-skills

Every file in kunolu/640-skills

Other files named domain-modeling

Browse by kind, by grade A, or by owner.