Dev mode in the builder
This page is a developer reference. Dev mode is a window onto what the builder produced, and it is useful when a form renders differently from how you expect and you need to see the underlying structure. Nothing in it changes the form.
A collapsible Dev mode panel sits at the bottom of the Form Builder, on the form you have open. It shows three things for the draft you are looking at right now:
| Tab | What it shows |
|---|---|
| Blueprint | The portable file for this form, the same thing Download blueprint produces. See Blueprints |
| Manifest | The neutral structure the renderers consume. See The manifest and submission payload |
| Mosaic | The widget output emitted for chat and agent surfaces |
Each is copyable, and the panel also carries a fidelity report listing anything a chat or agent surface cannot show exactly.
The Mosaic tab is gated
Section titled “The Mosaic tab is gated”The Mosaic tab sits behind a notice, because the format is not settled:
This format is not settled. Mosaic has no published schema. What this tab shows is derived from a Salesforce playground corpus, not a specification: read it as our best reading of the format, not a contract to write a consumer against or hand to a partner.
Click Show the Mosaic output to reveal the output and its fidelity warnings. Until you do, both stay hidden and Copy is disabled. The reveal lasts for that visit to the tab only: switching tabs, closing the panel, or opening a different form re-gates it, so nobody reads a partner-bound export without having seen the notice. The notice names the release the mappings were last verified against, and it retires itself automatically if a real schema is ever published.