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mcp/skillhub

Agent Skill

Domain Modeling skill

domain-modelingMatt Pocock Skillsskills/engineering/domain-modeling/SKILL.md

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.

300kMIT

always on

35 tokname + description

once used

740 tokSKILL.md body

bundled files

35 KB

installs

864kskills.sh

Install the Domain Modeling skill

Skills CLI (Claude Code, Codex, Cursor and others)

npx skills add https://github.com/mattpocock/skills --skill domain-modeling

Claude Code, by hand (all projects)

git clone --depth 1 https://github.com/mattpocock/skills.git /tmp/skills
mkdir -p ~/.claude/skills
cp -R /tmp/skills/skills/engineering/domain-modeling ~/.claude/skills/domain-modeling

For one project only, copy the folder into .claude/skills/ in that project instead. The agent picks it up when a task matches its description.

What it costs your context

Agent Skills load in three steps. Tokens counted with the o200k tokenizer; your model's count will differ a little.

WhenWhat loadsCost
Every sessionName and description35 tok
When the agent uses itThe SKILL.md instructions740 tok
Only if opened3 bundled files (5 KB)varies

Until it is used, domain-modeling costs about 39× less than the median MCP server we measured (1,363 tokens on every turn). Installing all 38 skills from mattpocock/skills would load 1,290 tokens of descriptions. Skills vs MCP study

Checks

Our checks found nothing to flag: it follows the Agent Skills specification's naming and size guidelines and doesn't pipe downloads into a shell.

Checked 2026-10-22 · method

What's inside

The headings of its SKILL.md. Read the full file on GitHub.

  • Domain Modeling
  • File structure
  • During the session
  • Challenge against the glossary
  • Sharpen fuzzy language
  • Discuss concrete scenarios
  • Cross-reference with code
  • Update GLOSSARY.md inline
  • Offer ADRs sparingly

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