Overnight CLI: Train Claude Code on Your Own Chat History to Work While You Sleep

Overnight is a new open-source CLI that analyzes your Claude Code conversations to build a personal coding profile, then predicts and executes your next steps autonomously. What It Does — A Personal AI Coding Supervisor Overnight is a free, open-source CLI tool that acts as a supervisor layer for Claude Code. Its core innovation is personalization through your chat history . Instead of using generic prompts or agent frameworks, it scrapes your Claude Code conversation history from a project, analyzes your communication style, coding patterns, technical preferences, and current focus, and builds a unique profile of you as a developer. This profile is then used to predict the exact message you would type next to continue the work. How It Works — Predict, Execute, Observe, Adapt The tool operates in a tight feedback loop: Predict: Combines your profile, the current workspace state (files, branches, tests), and the direction of recent work to generate the next message in your voice . Execu