As of today, the Summary tab isn’t user‑configurable. What’s displayed there and how inputs/outputs are collapsed, or truncated, is entirely governed by the UI’s built‑in logic. There are ongoing improvements to this view (for example, collapsing multiple inputs/outputs and tweaking how chat messages and exceptions are rendered), but those ship as product changes, not as per‑workspace or per‑user settings. 

If the Summary view becomes too cluttered for your traces, the only real workaround today is to use the Timeline or Details tabs for deeper inspection. Anything like hiding certain fields, changing what appears by default, or turning Summary off would need to be treated as a feature request rather than a configuration toggle.

I’d also love to understand what kind of "configuration" you had in mind. Are there specific parts of the Summary tab you’d want to hide or reorder? Any concrete suggestions would be helpful to feed back to the product team.