Builder.io

Explore, compare, iterate, and export interactive UI design prototypes from the Design app.

Turn visible project context, a proven thread, skill, or workflow into a runnable Agent-Native app. On Claude or ChatGPT Web, it hands a bounded source brief to Builder through Dispatch; local code agents can build and verify in a workspace.

Create rich interactive visual plans, recaps, and repo-native visual docs with diagrams, file maps, annotated code and diffs, API/schema summaries, feedback, and HTML export.