Use Block Authoring Palettes (Concept)

The Block Editor has three block authoring palettes: Parameters, Actions, and Parameter Sets.

The Block Authoring Palettes window is displayed only in the Block Editor. Use these palettes to add parameters and actions to your dynamic block definition.

Create Custom Block Authoring Tools

You can create custom block authoring tools. In order to preserve the default tools on the block authoring palettes, you should create a new palette for custom block authoring tools. You can then copy a parameter set tool from one of the existing palettes and paste the copy onto the new palette. In the Tool Properties dialog box, you can then change the properties of the new tool, including the following:

Tool description
Parameter type
Associated action(s)
Key point on the parameter to which the action is tied (if applicable)
Tool palette image

You cannot drag parameters and actions from the Block Editor onto any tool palette.