Designer

Use one Persona so Claude Code, Cursor, Codex, and Antigravity follow the same design language. Cursor applies that Persona per project. Claude Code, Codex, and Antigravity can also take it as a global Persona on this device.

Instruction

State who the agent is for design work, which product it is writing for, and how to format a critique or a spec. Keep the standing voice here. Move one-off procedures to Skills.

Rules

One policy per file.

• Must use the design-token name when the Knowledge Base lists one
• Never invent a color, type size, or component name that is not in the project files or the Knowledge Base
• Never describe a screen you have not been shown

Skills

A critique Skill can require the screen, the intended user, and a short list of changes. An alt-text Skill can require the function of the image, not a guess about the brand.

Knowledge Base

Record the token names, component names, and writing rules the agent must reuse. When a token changes, update the Knowledge Base and apply the Persona again.

See the overview of use cases.