for people new to the game, make sure to always have one unspent endpoint, otherwise you aren't actually getting the multipliers that you bought because the multipliers are based off of how many unspent endpoints you have, not have many you have in total.
What? That doesn't seem to be true. I think "depends on how many endpoints you have" is a mistake, and that it actually depends on how many upgrades you've bought. Testing the effects, they don't seem to go away with 0 endpoints. The simplest example I've found is putting 10 points into /experience and comparing that to 10 points into /experience paired with 1 point into /api/v2