200 OK — session open
> POST /ai/v1/session {}
< 200 OK req_01sqz6as 68ms POST /ai/v1/search {} Idempotency-Key: UEdYNnzRVh7_ Send ▶> POST /ai/v1/session {}
< 200 OK req_01sqz6as 68ms POST /ai/v1/search {} Idempotency-Key: UEdYNnzRVh7_ Send ▶