Struggling with outdated or missing API documentation for creating a custom Avatar Creator

I’ve read all the documentation I could find about the APIs used to create a custom Avatar Creator with Ready Player Me.

https://www.postman.com/readyplayerme/ready-player-me-public/request/rluag2u/get-character-metadata?tab=overview

While researching, I also came across another documentation source from something called Player Zero — but I still can’t figure out if it’s related to the original Ready Player Me project, if it’s a fork, or if it’s something completely separate, i would like
explanations on that.

The main issue I’m facing is that the official documentation available on the Ready Player Me websites seems very limited and quite outdated.

As the title suggests, I’m trying to build a customized avatar creator, but due to the lack of up-to-date and complete docs, it’s been pretty challenging to understand how to properly interact with the APIs for avatar creation.

For example, there’s no clear documentation on how to:

  • Change body shape

  • Modify skin tone, eye color, or hair color

  • Set the character’s gender

  • Work with morph targets for facial expressions

Because of that, I’ve had to do some reverse engineering of the default Ready Player Me avatar creator to figure things out — but I still have several gaps in my understanding.

So my questions are:

  1. Am I missing something, or is the documentation really that incomplete?

  2. If it’s indeed lacking, do you plan to update or expand it anytime soon? (It doesn’t seem like it would take much work to make it clearer and more complete.)

  3. what exactly is Player Zero in the context of RPM and do i need to care about it while working with RPM API ?

Thanks for any clarification!

P.S. Even a simple forum post listing all available API endpoints, along with their expected data and behavior, would go a long way toward compensating for the lack of official documentation.