Stream execution output via SSE
Server-sent event stream. Events carry JSON payloads: {type: 'stdout'|'stderr', data}, {type: 'truncated', output_truncated: true}, {type: 'error', error,…
GET
Path parameters
string (uuid)
required
Sandbox identifier
string
required
Execution identifier
Response
Returnstext/event-stream — Server-sent event stream. Events carry JSON payloads: {type: 'stdout'|'stderr', data}, {type: 'truncated', output_truncated: true}, {type: 'error', error, code?}, {type: 'exit', code, output_truncated?}, then {type: 'done'}. Each event has an SSE id (<executionId> plus a sequence number); send it as Last-Event-ID (header or last_event_id query parameter) to resume after the last event you saw. : heartbeat comments are written every 20s while the execution runs. Completed executions replay a synthesized terminal sequence.
Status codes
Last modified on August 31, 2026