Instabot is a Python library and CLI tool for automating Instagram actions such as liking, commenting, following, unfollowing, uploading photos/videos, and direct messaging. It operates by reverse-engineering Instagram's private API, simulating an Android client with device fingerprints, session cookies, and request signing. The architecture consists of a low-level API wrapper (`instabot.api.API`) that handles HTTP requests and login flow, and a high-level Bot class (`instabot.bot.Bot`) that orchestrates actions with built-in rate limiting, filtering, and checkpointing. The repository includes over 30 example scripts for common automation tasks, a multi-script CLI menu, and a scheduled 24/7 bot. External dependencies include `requests`, `Pillow`, `moviepy`, and `pycryptodome`. The project is no longer actively maintained and carries high risk of Instagram account bans due to ToS violations. The README now promotes paid private API services, indicating the open-source codebase is effectively deprecated.