Ubiquitous Language

Define the domain model's vocabulary. Each term in this glossary is a model element — changing a term here means changing the model and the code.

Invocation Position

This is a side-route skill that sharpens shared language across the rest of the workflow.

Use /ubiquitous-language when terminology is fuzzy, stakeholders are using conflicting terms, or you want a glossary that improves shaping, QA, issue writing, and refactor conversations.

Do not use it as a substitute for feature shaping or implementation. Its job is to improve the language of those workflows, not replace them.

One question per turn. When walking a workflow story or proposing canonical terms, ask one question at a time and wait for the user's answer before asking the next. Language work is a conversation, not a questionnaire.

Prefer single-select. Use single-select multiple choice when the user is choosing one direction, one priority, or one next step.

Use multi-select rarely. Reserve it for compatible sets — goals, constraints, non-goals, success criteria — that can all coexist. If prioritization matters, follow up asking which selected item is primary.

Use the platform's question tool when available. In Claude Code, use AskUserQuestion; in Codex, request_user_input; in Gemini, ask_user. Otherwise, present numbered options in chat and wait for the user's reply before proceeding.