Events

One closed vocabulary of 25 event types is shared by conversations and standalone runs. Every item names its host as resource: { type: "conversation" | "run", public_id } and carries a host-local ascending sequence; not every type appears on every host.

Durable events

Type	Carries	Meaning
input_accepted	origin, authored_by: { kind, handle, display_name }, answering_user_public_id, sender_conversation_public_id, deliver_at, run_public_id, task_key	An input entered the queue
input_edited	deliver_at, reason: follow_up_bound | steer_target_settled	An input was changed, or a kernel transition re-timed it
input_deleted		An input was removed
input_materialized	input_public_id, queue_position, turn_public_id, variant_public_id, run_public_id, task_key for a consumed steer	The input became a turn, a variant and optionally a run; keep these identities to follow the execution
input_blocked	blocked_reason	A drain refusal, or run_held
turn_created	answering_user_public_id	A turn exists
turn_status		The turn's status changed
turn_variant		A candidate was added, activated or edited
task_status		A task changed status
round_result		A model round settled
usage		Usage was recorded for an invocation
attention_required	reason, blocked_task_keys	The run needs a person: halt_failure, awaiting_human, deliverable_unresolved, approval_required
context_trimmed	history_selected, history_skipped, history_skipped_reason	Assembly left history out
context_compacted	mode: prune | kernel | delegate, trigger: usage | wall | overflow | manual | fallback, run_public_id, turn_public_id, summary_turn_public_id or summary_task_key, fallback_from, fallback_reason	A compaction repair was armed
fork_created		A fork exists
visibility		A visibility change
soft_delete		A turn or input was soft-deleted
turn_deleted		A turn was deleted
reasoning_replay_downgraded		Reasoning replay was switched off for this conversation
default_runner_changed	executor_public_id, previous_executor_public_id, by	The conversation's default runner changed; no task is readdressed
task_readdressed	task_key, role, executor_public_id, deadline_at, detail	A held approval's agent delivery address was withdrawn; the person's door still answers
task_deadline_extended	task_key, deadline_at, by, timeout_ms	A claimant extended its own park
access_changed	default, entries: [{ user_public_id, level }], by, kind	The access carrier was replaced
conversation_ended	reason: archived | tombstoned, conversation_public_id	The last item a tombstoned feed carries
handle_changed	user_public_id, old, new	A member was renamed; the one type that rides a member's own rows and neither host's feed

Replay

GET …/events?after={cursor}&limit={n}

Opaque cursors (cvei-prefixed on conversations), ascending sequences, next_after (null on an empty page) and the committed watermark a follower freezes to bound its drain. The watermark survives item expiry; an empty page whose watermark is beyond your consumed sequence means progress is no longer replayable. The retention window is 30 days.

Cable channels

Channel	Subscription	Envelope
Conversation events	items: "events"	{ event } — the durable items above
	items: "lifecycle"	{ event } narrowed to turn_status, attention_required, conversation_ended
	items: "progress"	{ frame } — ephemeral tool and process output and kernel timings; nothing durable, nothing replayed
Transcript		Text deltas, resets and settled snapshots for a turn or task; no replay log
Run events		The same vocabulary at a standalone run's own address
InferenceRequest events		The request's execution state and usage
Executor inbox	executor-keyed	work_available (run, task key, tool name) and work_canceled

Progress is limited to one frame per key per 250 ms per kernel process; excess cadence is acknowledged and dropped.

Payload details, the transcript and progress frame vocabularies and the retention rules are in Conversation feeds and Run feeds.