Ask HN: MVP with little, to zero, code. Suggestions?

I'm a developer, with an idea for a side project I'd like to try. I'd like to try throwing together an MVP writing as little code as possible, mainly because: 1) I have little time available 2) It's an interesting challenge and I'd like to see what's out there to achieve this

If absolutely needed I'll write a serverless function or two to tie things together but I'd like to keep this to the absolute minimum.

The MVP will need: - Some way of capturing form entries with results going to a DB - Some way of taking payments (it's a very niche marketplace type idea, so will need to pay out as well, but fine to be manual) - A method of authorising users and creating accounts - A way of sending email notifications when something happens

I know this is all very vague but what services/apps/tools has anyone used to achieve similar? I'm looking for suggestions to start exploring.

I know I can achieve a lot of this with typeform + zapier + stripe + s3 but I'm curious what else is out there.