Tweak your running app on a canvas, then have your agent apply the edits

Before you start

Design is labelled alpha. Install in Claude Code with /plugin marketplace add BuilderIO/agent-native, then /plugin install agent-native-design@agent-native-apps, and authenticate the Design connector with /mcp. Your local app has to be running. The canvas is hosted by Builder.io, with a small local bridge on your machine, so use an app with demo data on screen. Canvas edits never write to your code by themselves.

Name the page and the sizes to compare. The skill suggests keeping to a handful of screens.

Change copy, colour, spacing and layout by hand. Nothing is written to your source yet, so you can try things freely.

When you are ready, ask your agent to bring them in. Complex changes, such as moving elements between parents or editing shared components, are left to your coding agent, so read the plan.