NiftyAgent

NiftyAgent is a command-line interface AI agent implemented in a single JavaScript file under 500 lines of code, designed to be simple to understand and expand. It uses Nano-GPT or other LLM providers via API keys and supports customization such as changing models, system prompts, or adding features by prompting itself to update. It runs with zero Node.js dependencies and aims to demonstrate that AI CLI agents like Claude or Codex can be straightforward to work with.