You mean an image that shows the top X price time series?

If so, I have a few questions:

- On a per-portfolio basis or just for the top 5 coins (+ maybe market cap)?

- update interval should be more like 2 minutes (like the site) or once per day is ok?

- start-time should be how many days back?

From a dev perspective, it would be nice if there were a solution to this that allowed for either A. time series caching (to avoid stressing CMC) or B. image caching (to avoid CPU load, this currently runs on a free gcp instance).