sure, if thats a serious curiosity, the best analog to that would be web3.js API docs, which is for Ethereum Virtual Machines (EVM).
It was made for the main EVM called Ethereum, but other EVMs use this as well, things can be slightly different on other EVMs
https://github.com/ChainSafe/web3.js
https://web3js.readthedocs.io/en/v1.7.1/
The web3 concept extends beyond EVMs, as the term has mostly begin meaning “connect to nearest nodes instead of your own backend server” and so other distributed networks have their own equivalent but not typically with the web3.js library, but some other way to communicate with the nodes via RPC
You can get grants to contribute to development for making libraries like web3 (but thats probably the least lucrative thing to do)
The more lucrative thing would be to contract with projects that need their frontends built, or smart contracts deployed to these nodes (that the frontend interacts with)