person.face_set

A person chose the face they wear beside their name, or went back to their initials. Not sent to a harness.

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

Fields

Every event also carries the envelope.

Field	Required	Type	Description
v	yes	1	Protocol major version.
type	yes	"person.face_set"
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.
participant_id	yes	string	Who: a person chooses only their own face.
face	yes	object	The face they chose: a mark from Chips’ library or one or two letters, on the index of a ground. null when they took it back and wear their initials again.

Example

{
  "v": 1,
  "type": "person.face_set",
  "id": "evt_01K4ZQPX0000000000000000F1",
  "ts": "2026-10-07T12:00:00.000Z",
  "workspace_id": "ws_01K4ZQPX000000000000000001",
  "actor": {
    "kind": "person",
    "id": "usr_01K4ZQPX000000000000000003"
  },
  "participant_id": "usr_01K4ZQPX000000000000000003",
  "face": {
    "icon": "",
    "ground": 4,
    "letters": "AG"
  }
}