200 OK — session open
> POST /ai/v1/session {}
< 200 OK req_017s8kv1 42ms POST /ai/v1/search {} Idempotency-Key: WlTflM6I_Npb Send ▶> POST /ai/v1/session {}
< 200 OK req_017s8kv1 42ms POST /ai/v1/search {} Idempotency-Key: WlTflM6I_Npb Send ▶