Stream Chat Progress

Stream real-time progress for a chat job using Server-Sent Events (SSE).

Opens an SSE connection that streams events as the AI processes your request. Use this with the job_id returned from POST /v1/chat/async.

Event types:

• 'intermediate': Progress updates during processing (content, sequence, timestamp).
• 'proposed_change_batch': The batch of document changes proposed for review, delivered as one event carrying changes[] (emitted when approval_mode is 'ask_every_time'). Changes are always delivered as a batch via this event.
• 'document_sync': Chunk-id sync emitted before the agent runs, so changes can reference stable ids.
• 'continue_prompt': A pause on a large edit, asking whether to continue or stop.
• 'documents_changed': Signals that one or more documents were auto-applied (with per-document change counts and changed chunk ids).
• 'model_fallback': Notice that the request automatically failed over to another model tier.
• 'final': Processing complete. Contains the full result with AI response and document changes.
• 'usage': Billing data emitted after 'final' (monthly_used, monthly_limit, monthly_remaining).
• 'error': An error occurred (job failed, cancelled, or not found).

Authentication: Pass a token or api_key as a query parameter (required for EventSource which cannot set headers).