Creating a custom (and free) CalTopo layer with Sentinel imagery?

I’d like to help create a custom (and free) CalTopo layer with Sentinel imagery.

To start, I’d go to CalTopo dot com and select “Add/Custom Source”.

I then need to add 1 or 2 URL’s for “URL Template” and/or “Auto-Configure URL”.

As an example, here is a CalTopop map with a custom layer that has snow-depth estimates. Default Map

The “URL Template” for the custom “Snow Depth” layer is:
Export Map (NWS_Observations/NOHRSC_Snow_Analysis)},{right},{top}&bboxSR=102100&imageSR=102100&size={tilesize},{tilesize}&f=image

Is there a URL such as this I can use to create a custom (and free) CalTopo “Sentinel Imagery” layer?

Thanks!

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CalTopo provides this prompt:

“Supply a template
http://example.com/layer/{Z}/{X}/{Y}.png
http://example.com/WMS?bbox={left},{bottom},{right},{top}&WIDTH={tilesize}&HEIGHT={tilesize}”

WMS should work, see:

sentinel-hub.com

WMS

The Sentinel Hub Web Map Service conforms to the WMS standard. It provides access to Sentinel-2's 13 unprocessed bands and processed products such as true color imagery and NDVI.

Note that Sentinel Hub WMS service is a payable one, but you can create 30 days free trial:
http://www.sentinel-hub.com/create_account