Symphony
A live map of your AI coding agents
What it does
Symphony puts every AI coding agent on your team on one live board. Hooks stream each file edit from Claude Code, Codex, and opencode into Supabase, giving you per-person cards, collision flags before edits become merge conflicts, a token leaderboard, and a 3D map of the repo. Open source (MIT). Self-hosts in minutes with a free Supabase project, locally or on Modal.
The live map of your AI coding agents. Watch Claude Code, Codex, and opencode edit your repo in real time and catch collisions before they become merge conflicts. - itsloganmann/symphony
Symphony is an open-source control room for AI coding agents. Watch Claude Code, Codex, and opencode edit your repository in real time, and catch two agents about to collide on the same file before it becomes a merge conflict. The current wave of LLM observability tools traces agents you build with SDKs: waterfalls, token cost, session replays for your own orchestrated code. Who or what is touching my repo right now, and are they about to step on each other? You do not instrument your code. You install a hook. From then on every edit any agent makes, across every teammate's machine, streams onto one shared, live map of your codebase. This is not a new idea, it is a well-studied one that…from github.com
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I trained a 125M-parameter transformer to autocomplete piano performances in real time (~108 notes/sec on an iPhone 15). The idea is basically GitHub Copilot or Tabnine, except instead of prompting it with code, you prompt it by playing a few notes on a MIDI piano. The model then continues what you played, entirely on-device. The app is free if anyone wants to try it. Happy to answer questions about the model, training, Core ML, or the many things that didn't work.
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