Stream a function call execution in real-time using Server-Sent Events (SSE).
This endpoint returns a continuous stream of Server-Sent Event objects as the function executes, allowing for real-time streaming of responses. The response follows the Server-Sent Events specification with proper event structure for SDK compatibility.
Each Server-Sent Event contains:
id: Optional event identifierevent: Optional event typedata: JSON payload with streaming chunk informationretry: Optional retry intervalThe data payload includes:
delta: Incremental text content (if any)span_id: Unique identifier for the execution span (when available)