Creating API for a game-bot by reading 3rd party game-memory (or open for discussion)

I am looking into creating a game bot (more actually), and generic ways to do this. For now I believe reading game memory directly is the safest way, and thus this is currently the scope of the project, but I am open to suggestions! Requirements: Create an API for the games "diablo 3" and "entropia universe". D3 API should contain: Function for retrieving all non player characters on screen with information like screen coordinates, type, hitpoints (and more if possible) Function for retrieving a list of all items lying on the ground on screen including type, name and screen coordinates (and more if possible) Entropia API should contain: Function for retrieving a list of all mobs in proximity (visible) including their 3D coordinates in relation to the player, their type and hitpoints. Function for retrieving a list of all objects of type claim deed (theres two kinds) in proximity. Function for reading the coordinates and type (text) visible in a claim deed window when this one is open. (ask for details) I do not need the bot itself to be programmed, just an API that I may interface. I will use C#, but you can write in c++ or the language of your choice as long as I can interface with it from C#.