OptionalmarkdownTextarea only: when true, the UI renders the current value as formatted Markdown (headings, lists, bold, tables, code) with an Edit toggle that swaps to the raw textarea. Used for rich agent-authored content the human reviews more than types — e.g. the Plan Mode approval form.
OptionalmaxMaximum number of characters allowed
OptionalplaceholderOptional placeholder text shown in empty input
Type of text input:
Text input question types. Supports single-line text, multi-line textarea, and email validation.