Domain Modeling
fossasia/eventyay-interpretation
Build and sharpen a project's domain model. An agent skill from fossasia/eventyay-interpretation.
One ubiquitous language per bounded context, with a repository-declared glossary as the naming authority and explicit decisions for language changes.
Install Ubiquitous Language
$ npx skills add citypaul/.dotfiles --skill ubiquitous-language -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install citypaul/.dotfiles ubiquitous-language --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/citypaul/.dotfiles.git skills-src && mkdir -p .claude/skills && cp -r skills-src/claude/.claude/skills/ubiquitous-language .claude/skills/ubiquitous-language && rm -rf skills-srcUse ~/.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/
Install the "ubiquitous-language" agent skill from https://github.com/citypaul/.dotfiles/tree/main/claude/.claude/skills/ubiquitous-language into .claude/skills/ubiquitous-language/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ubiquitous-language", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/citypaul/.dotfiles/tree/main/claude/.claude/skills/ubiquitous-languageType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add citypaul/.dotfiles --skill ubiquitous-language -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install citypaul/.dotfiles ubiquitous-language --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/citypaul/.dotfiles.git skills-src && mkdir -p .agents/skills && cp -r skills-src/claude/.claude/skills/ubiquitous-language .agents/skills/ubiquitous-language && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "ubiquitous-language" agent skill from https://github.com/citypaul/.dotfiles/tree/main/claude/.claude/skills/ubiquitous-language into .agents/skills/ubiquitous-language/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ubiquitous-language", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add citypaul/.dotfiles --skill ubiquitous-language -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install citypaul/.dotfiles ubiquitous-language --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/citypaul/.dotfiles.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/claude/.claude/skills/ubiquitous-language .cursor/skills/ubiquitous-language && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "ubiquitous-language" agent skill from https://github.com/citypaul/.dotfiles/tree/main/claude/.claude/skills/ubiquitous-language into .cursor/skills/ubiquitous-language/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ubiquitous-language", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/citypaul/.dotfiles.git --path claude/.claude/skills/ubiquitous-language--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add citypaul/.dotfiles --skill ubiquitous-language -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install citypaul/.dotfiles ubiquitous-language --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/citypaul/.dotfiles.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/claude/.claude/skills/ubiquitous-language .gemini/skills/ubiquitous-language && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "ubiquitous-language" agent skill from https://github.com/citypaul/.dotfiles/tree/main/claude/.claude/skills/ubiquitous-language into .gemini/skills/ubiquitous-language/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ubiquitous-language", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install citypaul/.dotfiles ubiquitous-languageInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add citypaul/.dotfiles --skill ubiquitous-language -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/citypaul/.dotfiles.git skills-src && mkdir -p .github/skills && cp -r skills-src/claude/.claude/skills/ubiquitous-language .github/skills/ubiquitous-language && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "ubiquitous-language" agent skill from https://github.com/citypaul/.dotfiles/tree/main/claude/.claude/skills/ubiquitous-language into .github/skills/ubiquitous-language/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ubiquitous-language", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add citypaul/.dotfiles --skill ubiquitous-language -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install citypaul/.dotfiles ubiquitous-language --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/citypaul/.dotfiles.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/claude/.claude/skills/ubiquitous-language .opencode/skills/ubiquitous-language && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "ubiquitous-language" agent skill from https://github.com/citypaul/.dotfiles/tree/main/claude/.claude/skills/ubiquitous-language into .opencode/skills/ubiquitous-language/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ubiquitous-language", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
ubiquitous-language- GitHub stars
- 740
- Token cost
- ~2.4k tokens
- SKILL.md length
- 1,177 words
- Files
- 3
- Skills in repo
- 44
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
One ubiquitous language per bounded context, with a repository-declared glossary as the naming authority and explicit decisions for language changes.
- Works in 4 steps: The declared glossary is the naming… → Domain code and executable examples… → The rest of the maintained system… → …
- Naming domain concepts
- SKILL.md covers Where the Language Lives, The Language Protocol (the…, Mechanical Enforcement and The Adoption Spectrum, plus 2 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Ubiquitous Language is an agent skill from citypaul/.dotfiles. One ubiquitous language per bounded context, with a repository-declared glossary as the naming authority and explicit decisions for language changes. Covers the five-step language protocol (detect, propose, decide, record, rename), optional glossary-driven lint ratchets, and safe context-wide renames. Use when naming domain concepts, when a term is missing from or fights the glossary, when spotting synonyms or near-duplicates, when bootstrapping a glossary, or when renaming across a bounded context. For DDD…
Its SKILL.md is about 2.4k tokens, which your agent loads only when the skill is triggered. The skill folder holds 3 other files (for example `resources/glossary-format.md` and `resources/language-protocol.md`).
It sits in Development, covering Domain-driven design.
When your agent uses it
- Naming domain concepts
- A term is missing from
- Fights the glossary
- Spotting synonyms
Example prompts
- “/ubiquitous-language”
Workflow steps
4 steps, taken from the first numbered list in SKILL.md.
- The declared glossary is the naming authority for its bounded context. Canonical spelling and capitalization matter whenever the concept…
- Domain code and executable examples consume and exercise that language. Identifiers, branded types, DSL verbs, and test titles should use…
- The rest of the maintained system propagates approved terms through schemas, APIs, documentation, diagrams, fixtures, and generated…
- Speech, plans, research, comments, historical documents, and existing code expose candidate vocabulary and possible drift. They are…
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.
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
Ubiquitous Language loads about 2.4k tokens when it runs. Until then it costs about 162 tokens; SKILL.md has 1,177 words of instructions outside code blocks.
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 1,177 words (~2,381 tokens).
“A change in the language is a change to the model (Evans). One ubiquitous language per bounded context — apply a single language to a whole enterprise and you will fail (Vernon). This skill makes the repository's declared glossary the…”
- name
- ubiquitous-language
Files
SKILL.md and 2 other files in claude/.claude/skills/ubiquitous-language of citypaul/.dotfiles.
- SKILL.md
- resources/glossary-format.md
- resources/language-protocol.md
Open the folder on GitHubat commit cd4028d
Compare with similar skills
Ubiquitous Language 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.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Ubiquitous Language this skillcitypaul/.dotfiles | 740 | — | ~2.4k | Automated safety check: Pass | Custom licence | |
| Domain Modelingfossasia/eventyay-interpretation | 1.6k | 30 repos | ~821 | Automated safety check: Pass | Apache-2.0 | |
| Domain Modelingbrim-borium/spotify_sdk | 166 | 7 repos | ~806 | Automated safety check: Pass | Apache-2.0 | |
| Evolutionary Modular Architecturetech-leads-club/agent-skills | 7k | — | ~3.7k | Automated safety check: Pass | CC-BY-4.0 | |
| Domain Modeling and Glossarywindmill-labs/windmill | 18k | — | ~622 | Automated safety check: Pass | Custom licence | |
| Dddswamp-club/swamp | 646 | — | ~1.4k | Automated safety check: Pass | Custom licence |
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brim-borium/spotify_sdk
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Guides design of modular-monolith platforms with DDD, flat-by-aggregate modules, anti-corruption layers, outbox events and resilience, plus an architecture document with SVG diagrams.
Domain Modeling and Glossary
windmill-labs/windmill
Actively challenges vague or conflicting terminology as you design, and keeps a living domain glossary file up to date in real time.
Ddd
swamp-club/swamp
Domain Driven Design guidance for TypeScript/Deno codebases.
Migration Path
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Create a new Axon Framework 4→5 migration path documentation page.
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Related
Categories
Questions about Ubiquitous Language
What does Ubiquitous Language do?
One ubiquitous language per bounded context, with a repository-declared glossary as the naming authority and explicit decisions for language changes. dotfiles. One ubiquitous language per bounded context, with a repository-declared glossary as the naming authority and explicit decisions for language changes.
When should I use Ubiquitous Language?
Ubiquitous Language fits situations like: naming domain concepts; A term is missing from; fights the glossary; spotting synonyms.
How do I install Ubiquitous Language in Claude Code?
Run `npx skills add citypaul/.dotfiles --skill ubiquitous-language -a claude-code`. Or copy the skill folder (claude/.claude/skills/ubiquitous-language in citypaul/.dotfiles) into .claude/skills/ubiquitous-language in your project. Claude Code loads it when a task matches its description.
How do I install Ubiquitous Language in Codex?
Run `npx skills add citypaul/.dotfiles --skill ubiquitous-language -a codex`. Or copy the skill folder (claude/.claude/skills/ubiquitous-language in citypaul/.dotfiles) into .agents/skills/ubiquitous-language in your project. Codex loads it when a task matches its description.
Can I use Ubiquitous Language 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 ubiquitous-language -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/ubiquitous-language, .gemini/skills/ubiquitous-language, .github/skills/ubiquitous-language and .opencode/skills/ubiquitous-language in your project.
What does Ubiquitous Language need to run?
SKILL.md names no scripts, command-line tools or credentials: Ubiquitous Language is instructions for the agent only.
Does Ubiquitous Language 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 Ubiquitous Language 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 Ubiquitous Language use?
Ubiquitous Language 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 Ubiquitous Language use?
About 2.4k tokens (SKILL.md is roughly 9.5k 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 Ubiquitous Language?
Skills that share tags, products or a category with Ubiquitous Language: Domain Modeling (fossasia/eventyay-interpretation, 1.6k stars), Domain Modeling (brim-borium/spotify_sdk, 166 stars), Evolutionary Modular Architecture (tech-leads-club/agent-skills, 7k stars) and Domain Modeling and Glossary (windmill-labs/windmill, 18k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Ubiquitous Language?
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.