Happy vs ADRs for AI

Your coding agent shouldn't wait for you to get back to your desk. A task can run for an hour and then stop five minutes in to ask for permission or a decision. Happy lets you answer from your phone, and the same agent carries on in the same repository with the same tools and context. Happy is the mobile app for Claude Code and Codex. The agents keep running on your own computer, and your phone is how you start them, steer them and review their work. WHAT YOU CAN DO FROM YOUR PHONE • Start a new session or pick up one you began at your desk • Get notified when an agent needs input or finishes • Approve or deny permission requests, or let a session run in Auto mode • Choose the model and reasoning effort from the providers set up on your computer • Review changes: a file list, colored diffs, and the full set of changes on a branch • Attach a screenshot or photo to your prompt • Browse sessions in one list or grouped by project, with each checkout's chats as tabs • Open a side chat next to a session without losing your place • Drafts follow you between your phone and your computer HOW IT WORKS Happy runs on your computer, and this app connects to it. 1. Install Happy Desktop from happy.engineering, or if you prefer the terminal, run: npm install -g happy 2. Create an account in the app. You don't need an email address or a password. 3. Scan the QR code your computer shows to link it to your phone. Then start a session from either device. What you see on your phone is the same live session that's running on your computer. YOU WILL NEED • A computer running Happy Desktop or the Happy CLI • Access to the coding agents you want to use, such as a Claude or ChatGPT/Codex plan or API key. Happy uses your existing accounts. PRIVATE BY DESIGN Sessions are end-to-end encrypted. Your code, agent and encryption keys stay on your devices. Happy's servers only relay and store encrypted session data and can't read your prompts, responses or code. OPEN SOURCE The app, the CLI and the server are MIT-licensed and on GitHub. Read the code, run your own build or host your own server. ALSO ON DESKTOP Happy Desktop adds a harness that works across providers and lets you switch models in the middle of a task. The sessions it starts show up on your phone too. Happy is an independent project. It is not affiliated with or endorsed by Anthropic or OpenAI. Claude and Claude Code are trademarks of Anthropic. Codex and ChatGPT are trademarks of OpenAI. Privacy Policy: https://happy.engineering/privacy Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Your project's decisions — with their reasoning — in your pocket. Review open questions dossier by dossier: Each one arrives with the options considered, a recommendation, the rationale behind it, a stated confidence, and what would change the answer. Accept or Override with one tap — and your answer lands as a real commit in your repository. ADRs4AI is for people who build with AI collaborators and refuse to let the thinking evaporate. The method is simple: Decisions live as plain Markdown records in your repo, questions are first-class and findable, and every recommendation carries its reasoning. This app is the pocket half of that practice — for the questions that accumulate while you're away from your desk. WHAT IT DOES • Sign in with your GitHub token — it stays in your device's Keychain • Import a repository and see its open questions as reviewable dossiers • Read each recommendation with its full reasoning, not just a conclusion • Accept with one tap, or write your own answer — either lands as a commit • Works with any repository using the ADRs4AI record format WHAT IT DOESN'T DO • No server of ours — your device talks to GitHub, and nowhere else • No analytics, no tracking, no ads, no accounts • No lock-in: Everything is plain Markdown in your repo; delete the app tomorrow and your records are still yours, still readable Part of the ADRs4AI toolkit — a git-native methodology, VS Code extension, and starter template for durable human–AI collaboration. Start at adrs.systems.