It's a framework laid out by Central Bank and mandatory for medium and large-sized banks and payment companies. (For small ones, it's optional.) Pix has severa

It's a framework laid out by Central Bank and mandatory for medium and large-sized banks and payment companies. (For small ones, it's optional.) Pix has several rules that makes up for a nice UX, such as being free for personal use and a 10-second limit to get a response after a transaction. Pix is an open source specification, btw: https://github.com/bacen/pix-api https://github.com/bacen/pix-api