How to intercept tile requests?

[cmahnke]

I'm looking into the possibilities to intercept requests to specific tiles to rewrite them.
Use cas:
I have a blog that's displaying a map centred arround the object mentioned in this post. Now I want to provide certain (vector) tiles that contain informations specific of this context post. while I certainly could regenerate te base map over and over gain to provide a complete set of tiles for each directory where a post is located, this is just a waste of web space. I alreday figured out how to locate a set of z/x/y paths for a post (represented by a polygon), but now my question is how to register such additional URL fragments with Maplibre.
It might look like configuring a function (z, x, y) instead of a /map/tiles/{z}/{x}/{y}.pbf string which would return the constructed URL (part). Is there already such a facility?

[HarelM]

I would look into separating the base map and the additional data.
One of the common solution to this would be a geojson source, where you specify only what you would like to see over the map and style it accordingly without touching the base map tiles.
If you fancy some more complicated scenario, you can use addProtocol.
I would also suggest asking these kind of questions in our slack channel, as you would probably get a lot more answers than here.
Good luck!

[cmahnke]

Great, thanks! I'm not sure if the GeJSON solution would be a good fit, since I already have the workflow for required vector tiles in place. My reasoning is also to be able to compose maps (for example when having a list or section page in Hugo lingo).
I'll have a look into addProtocol, it looks like I just need to add a https handler and mess around in there.

Thank you!