In order to add badges for social proof, do you reach out to these companies and ask for permission or did you say fuck it and added them once they used your app?

I think it depends if your company sales/signup is B2B or B2C (or low touch B2B). I think the prior you always make sure your contract with the company allows for it or you ask them. For low touch B2B/B2C I don't know but I would expect you can probably get away with adding them for social proof without asking and then removing them if that company requests it