200 OK — session open
> POST /ai/v1/session {}
< 200 OK req_000081r5 60ms POST /ai/v1/search {} Idempotency-Key: 8U0_pJFhJ7Un Send ▶> POST /ai/v1/session {}
< 200 OK req_000081r5 60ms POST /ai/v1/search {} Idempotency-Key: 8U0_pJFhJ7Un Send ▶