200 OK — session open
> POST /ai/v1/session {}
< 200 OK req_01myncb1 60ms POST /ai/v1/search {} Idempotency-Key: Ctb8dewT3i11 Send ▶> POST /ai/v1/session {}
< 200 OK req_01myncb1 60ms POST /ai/v1/search {} Idempotency-Key: Ctb8dewT3i11 Send ▶