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Agent skill

Domain Driven Design

by citypaul in citypaul/.dotfiles

Domain-Driven Design patterns for TypeScript. An agent skill from citypaul/.dotfiles.

Custom licenceAuto-check passedDevelopment

Install Domain Driven Design

skills CLI
$ npx skills add citypaul/.dotfiles --skill domain-driven-design -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install citypaul/.dotfiles domain-driven-design --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/citypaul/.dotfiles.git skills-src && mkdir -p .claude/skills && cp -r skills-src/claude/.claude/skills/domain-driven-design .claude/skills/domain-driven-design && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
domain-driven-design
GitHub stars
740
Token cost
~8.2k tokens
SKILL.md length
3,097 words
Files
8
Skills in repo
44
Repo updated
First seen
Licence
Custom licence

At a glance

Domain-Driven Design patterns for TypeScript. An agent skill from citypaul/.dotfiles.

  • Works in 4 steps: One aggregate root per transaction → Reference other aggregates by ID — never… → All invariants enforced by the root → …
  • Implementing ubiquitous language
  • SKILL.md covers When to Use DDD, Core Principle, Where Does This Code Belong? and Ubiquitous Language & Glossary, plus 7 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Domain Driven Design is an agent skill from citypaul/.dotfiles. Domain-Driven Design patterns for TypeScript. Use when implementing ubiquitous language, value objects, entities, aggregates, domain events, domain services, or bounded contexts. Only applies to projects that explicitly use DDD. Do NOT use for simple CRUD or projects without domain modeling.

Its SKILL.md is about 8.2k tokens, which your agent loads only when the skill is triggered. The skill folder holds 8 other files (for example `resources/aggregate-design.md`, `resources/bounded-contexts.md` and `resources/domain-events.md`).

It sits in Development, covering Domain-driven design. It works with TypeScript.

When your agent uses it

  • Implementing ubiquitous language
  • Domain services
  • Bounded contexts
  • Projects without domain modeling

Example prompts

  • “/domain-driven-design”

Workflow steps

4 steps, taken from the first numbered list in SKILL.md.

  1. One aggregate root per transaction
  2. Reference other aggregates by ID — never embed
  3. All invariants enforced by the root
  4. Keep aggregates small — only what's needed for consistency

What it can do on your machine

Read from SKILL.md and the folder at commit cd4028d. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md (its code samples are typescript and markdown).

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Domain Driven Design loads about 8.2k tokens when it runs. Until then it costs about 78 tokens; SKILL.md has 3,097 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~78
When it runs · the whole SKILL.md, loaded when a task matches
~8.2k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 3,097 words (~8,218 tokens).

“This skill applies only to projects that have opted in to DDD. Do not apply these patterns to projects that use a different approach.”

— opening of SKILL.md by citypaul, Custom licence
name
domain-driven-design

Read the full SKILL.md on GitHub

Files

SKILL.md and 7 other files in claude/.claude/skills/domain-driven-design of citypaul/.dotfiles.

  • SKILL.md
  • resources/aggregate-design.md
  • resources/bounded-contexts.md
  • resources/domain-events.md
  • resources/domain-services.md
  • resources/error-modeling.md
  • resources/references.md
  • resources/testing-by-layer.md

Open the folder on GitHubat commit cd4028d

Compare with similar skills

Domain Driven Design next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Domain Driven Design compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Domain Driven Design this skillcitypaul/.dotfiles740—~8.2kAutomated safety check: PassCustom licence
Evolutionary Modular Architecturetech-leads-club/agent-skills7k—~3.7kAutomated safety check: PassCC-BY-4.0
Dddswamp-club/swamp646—~1.4kAutomated safety check: PassCustom licence
Domain Driven Designyonatangross/orchestkit292—~2.3kAutomated safety check: PassMIT
Clean Architecturegiuseppe-trisciuoglio/developer-kit357—~2kAutomated safety check: NotesMIT
Build Teaql Appteaql/teaql-agent-kit2.8k—~4.6kAutomated safety check: PassMIT

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    Provides implementation patterns for Clean Architecture, Domain-Driven Design (DDD), and Hexagonal Architecture (Ports & Adapters) in NestJS/TypeScript applications.

    357 GitHub stars~2k tokensUpdated 1 mo ago
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Works with

Categories

Questions about Domain Driven Design

What does Domain Driven Design do?

Domain-Driven Design patterns for TypeScript. An agent skill from citypaul/.dotfiles. dotfiles. Domain-Driven Design patterns for TypeScript.

When should I use Domain Driven Design?

Domain Driven Design fits situations like: implementing ubiquitous language; domain services; bounded contexts; projects without domain modeling.

How do I install Domain Driven Design in Claude Code?

Run `npx skills add citypaul/.dotfiles --skill domain-driven-design -a claude-code`. Or copy the skill folder (claude/.claude/skills/domain-driven-design in citypaul/.dotfiles) into .claude/skills/domain-driven-design in your project. Claude Code loads it when a task matches its description.

How do I install Domain Driven Design in Codex?

Run `npx skills add citypaul/.dotfiles --skill domain-driven-design -a codex`. Or copy the skill folder (claude/.claude/skills/domain-driven-design in citypaul/.dotfiles) into .agents/skills/domain-driven-design in your project. Codex loads it when a task matches its description.

Can I use Domain Driven Design in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add citypaul/.dotfiles --skill domain-driven-design -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/domain-driven-design, .gemini/skills/domain-driven-design, .github/skills/domain-driven-design and .opencode/skills/domain-driven-design in your project.

What does Domain Driven Design need to run?

SKILL.md names no scripts, command-line tools or credentials: Domain Driven Design is instructions for the agent only.

Does Domain Driven Design access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Domain Driven Design safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Domain Driven Design use?

Domain Driven Design has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.

How many tokens does Domain Driven Design use?

About 8.2k tokens (SKILL.md is roughly 33k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Domain Driven Design?

Skills that share tags, products or a category with Domain Driven Design: Evolutionary Modular Architecture (tech-leads-club/agent-skills, 7k stars), Ddd (swamp-club/swamp, 646 stars), Domain Driven Design (yonatangross/orchestkit, 292 stars) and Clean Architecture (giuseppe-trisciuoglio/developer-kit, 357 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Domain Driven Design?

citypaul (a GitHub user) maintains it in citypaul/.dotfiles, which has 740 GitHub stars. The repository holds 44 skills in this directory. The repository was last updated on October 9, 2026.

Source: citypaul/.dotfiles on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.