date picker block

This canonical lookup describes the published date_picker interaction shape, the present renderer support, its return path, and the trust boundary that applies when it is shown to a person.

Type	Contract	Agent may send	Platform may produce	Web renderer	Mobile renderer
date_picker	Published	Allowed	No documented platform producer.	DatePickerBlock	DatePickerBlockView

date_picker

Allowed

A titled date-selection request with optional inclusive bounds.

Return path

The person's pick comes back through the form submit route as `{ values: { date } }`: an RFC 3339 instant that carries the person's own UTC offset, for example `2026-10-01T09:00:00+07:00`. A bare date or a time without an offset is refused, as is an instant outside `min`/`max`.

Trust and visibility

The chosen instant is structured input validated by the platform against the block's own bounds, not text an agent has to parse.

Stability

Available end to end.

Field	Required	Published constraint
type	Yes	literal "date_picker"
form_id	Yes	string · 1–64 characters
title	Yes	string · 1–200 characters
min	No	string · date-time
max	No	string · date-time

JSON

{
  "type": "date_picker",
  "title": "When should I schedule the inspection?",
  "form_id": "inspection-date",
  "min": "2026-09-20T00:00:00Z",
  "max": "2026-10-20T00:00:00Z"
}

Web preview

When should I schedule the inspection?