intent block

This canonical lookup describes the published intent 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
intent	Published	Allowed	No documented platform producer.	IntentBlock	IntentBlockView

intent

Allowed

What the agent is about to do, stated before it does it.

Return path

None; this is display content.

Trust and visibility

Agent-authored prose in the platform's markdown subset, untrusted input like every other agent-authored block.

Stability

Valid ONLY in a partial reply; a final carrying one is refused 400 intent_requires_partial. Never appears in a persisted message.blocks as a result — visible only while a reply is still streaming, gone the moment the final result replaces it.

Field	Required	Published constraint
type	Yes	literal "intent"
text	Yes	string · 1–10000 characters

JSON

{
  "type": "intent",
  "text": "Checking fare rules before I answer."
}

Web preview

Checking fare rules before I answer.