wtf is vim_codex?

Vim Codex is a plugin that brings AI-powered code completion directly into the Vim text editor. Instead of switching to a browser or a separate tool to ask an AI for help writing code, you stay in your editor and trigger a command that generates code for you based on what you're already writing. At a high level, the plugin talks to OpenAI's Codex API, which is the same technology behind AI coding assistants that suggest or finish lines of code. Once installed, you can trigger code generation with a simple keyboard shortcut. You tell it how much code to generate (measured in "tokens," which are roughly chunks of words or characters), and it inserts the result right into your file. There's also a mode to just complete the current line. You do need your own OpenAI API key, which you get by signing up for OpenAI's developer platform. This is for developers who use Vim as their primary editor and want AI code completion without leaving their workflow. If you're comfortable with Vim's keyboard-driven style and already use AI tools to speed up coding, this bridges the two. For example, if you're writing a function and want the AI to fill in the body, you trigger the command and the generated code appears in place. The project is straightforward and minimal. Installation uses standard Vim plugin managers like Pathogen or Vundle, plus a Python package from OpenAI. The README doesn't go into much detail beyond setup and basic usage, so there's not much in the way of advanced configuration or customization described. It's a lightweight bridge between Vim and an external AI service rather than a full-featured IDE-style assistant.