InteractionProcessContextInjectedSystemMessage

A system message added to the run while it was going, to give its agents more context without restarting it.

Kind: an object, used in responses.

Fields

Every field is present in a response; empty ones are null.

Field	Type	Description
message	string	The message text.
sequence	integer	The item’s position in the run’s conversation. Sort every item in context by it to read the conversation in order.
author	InteractionProcessContextAuthor	Who wrote the item.
date	datetime	When the item was written (UTC).
threadId	string | null	The conversation thread the item is on. Null is the main thread, the conversation the participants share. Every other thread belongs to one participant: private:<participant> (a managed agent’s private conversation with its manager), dispatch:<participant>:<id> (one dispatch’s working) and question:<participant>:<id> (how a participant reached its answer to a direct question).

Example

{
  "message": "...",
  "sequence": 0,
  "author": {
    "id": "3f2b8c1e-5d4a-4e6b-9c7d-2a1b0c9d8e7f",
    "name": "...",
    "type": "Human"
  },
  "date": "2026-10-26T12:00:00.0000000Z",
  "threadId": "..."
}

Where it’s used

• Inside InteractionProcessContext