The modern-treasury python SDK didn't expose httpx's limits kwarg for tuning the connection pool (max connections, keepalive). A user posted a workaround that reaches into modern_treasury._client, builds a new httpx.Client copying baseurl/timeout/headers and passing `httpx.Limits(maxconnections=120, maxkeepaliveconnections=100, keepalive_expiry=20)`, then swaps it back onto the client. A maintainer later confirmed version 1.10 resolved the issue.