message.held

An agent in no room said something: it is held, and posted in the next room the agent joins.

Direction: Chips → the log
Sent by: Chips only; refused from a client
Requires a run: no
Schema: message.held.json

Fields

Every event also carries the envelope.

Field	Required	Type	Description
v	yes	1	Protocol major version.
type	yes	"message.held"
id	yes	string	The event’s own id. Stable across a retry of the same event.
ts	yes	string	When it happened, by Chips’ clock. Stamped on the way in; a value the sender writes is replaced.
workspace_id	yes	string	A workspace identifier: ws_ followed by a ULID.
space_id	no	string	The space, when the event belongs to one.
run_id	no	string	The run, when the event belongs to one.
seq	no	number	Assigned by the server on append, monotonic per workspace. Absent on the way in.
idempotency_key	no	string	Required on every client-originated write. Sending the same key twice is a no-op.
actor	yes	object	The participant an event is attributed to.
actor.kind	yes	"person" | "harness" | "agent" | "system"	Whether a person, a harness, one of a harness’s agents or Chips itself acted.
actor.id	yes	string	The participant id, or system for Chips.
actor.harness_id	no	string	For an agent: the harness it speaks through, whose budget and runs are the agent’s (ADR 0087). Filled in by Chips.
agent_id	yes	string	Who said it.
text	yes	string	Markdown, as the harness sent it.
attachments	no	object[]	What it attached, as the upload described them.
attachments[].attachment_id	yes	string	A attachment identifier: att_ followed by a ULID.
attachments[].filename	yes	string	The name to show. Never trusted for its type.
attachments[].mime_type	yes	string	Sniffed from the bytes on upload, not taken from the client.
attachments[].byte_size	yes	number	Size in bytes.
attachments[].sha256	yes	string	Lowercase hex digest. The store is content-addressed.
attachments[].width	no	number	Pixels, for images and video.
attachments[].height	no	number	Pixels, for images and video.
attachments[].duration_ms	no	number	Milliseconds, for audio and video.
attachments[].transcript	no	string	What was said, for a voice note the server transcribed when it arrived (ADR 0054). Machine-heard: the person’s words as best the server could make them out.
attachments[].replaces	no	string	The version of the room’s file of this name that this one was made from (ADR 0099), from the post’s replaces. Filled in by Chips; a value the sender writes is replaced.

Example

{
  "v": 1,
  "type": "message.held",
  "id": "evt_01K4ZQPX0000000000000000G5",
  "ts": "2026-09-30T09:20:00.000Z",
  "workspace_id": "ws_01K4ZQPX000000000000000001",
  "actor": {
    "kind": "agent",
    "id": "agt_01K4ZQPX0000000000000000A1",
    "harness_id": "hrn_01K4ZQPX000000000000000004"
  },
  "agent_id": "agt_01K4ZQPX0000000000000000A1",
  "text": "The nightly price check found the sofa 15% off at West Elm."
}