Domain modeling
Skill George930502/curated-codex-skills/skills/domain-modeling
Curated, production-tested Codex skills and reusable workflows for reliable agentic work.
npx -y skills add George930502/curated-codex-skills --skill domain-modelingAssembled from the repository path, not quoted from the project. Check it against their README if it does not work.
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What its author says it does
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Build and sharpen a project's domain model. Use when the user wants to pin down domain terminology or a ubiquitous language, record an architectural decision, or when another skill needs to maintain the domain model.
SKILL.md
2.7 KB, as published. Nobody here has run it
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 CONTEXT.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.)
Before the first glossary write, read CONTEXT-FORMAT.md
for file placement, single/multi-context routing, and format. Create files only
when the first resolved term needs them.
Before asking the user to decide anything, read
../grilling/NATIVE-INPUT.md and use that native
input contract. This applies whether this skill runs alone or through another
skill; never substitute a prose question.
During the session
Challenge against the glossary
When the user uses a term that conflicts with the existing language in
CONTEXT.md, surface the conflict immediately and present the viable meanings
as one native decision.
Sharpen fuzzy language
When the user uses vague or overloaded terms, propose a precise canonical term and present the materially distinct meanings as one native decision.
Discuss concrete scenarios
When domain relationships are being discussed, stress-test them with specific scenarios. Invent scenarios that probe edge cases and force the user to be precise about the boundaries between concepts.
Cross-reference with code
When the user states how something works, check whether the code agrees. If you find a contradiction, surface the evidence and present the viable resolutions as one native decision.
Update CONTEXT.md inline
When a term is resolved, update CONTEXT.md right there. Don't batch these up — capture them as they happen. Use the format in CONTEXT-FORMAT.md.
CONTEXT.md should be totally devoid of implementation details. Do not treat CONTEXT.md as a spec, a scratch pad, or a repository for implementation decisions. It is a glossary and nothing else.
Offer ADRs sparingly
When a candidate durable decision arises, read
ADR-FORMAT.md and create an ADR only when its three-part gate
passes.
Completion criterion: every resolved domain term is recorded once, code/docs contradictions are surfaced, and only qualifying decisions become ADRs.