Version v0.2.1 — free and open source under MIT. Notch runs on your machine and drives the agent CLIs you already have; your code never leaves it.
npm install -g notch
Then loom init in a project and loom to open the workspace.
The macOS build is unsigned. Right-click the app and choose Open the first time — double-clicking will be refused by Gatekeeper. Verify what you downloaded against SHA256SUMS.txt.
SigNoz is optional but it is the point. Notch works without it — the daemon, the baton and the shared brain are all local. But Metrics, Logs, Self-heal and the trace links all read back out of SigNoz, and without it they say so rather than showing you zeros. There is a scripts/signoz-up.sh in the repo that brings the stack up in one command.
You bring your own agents. Notch drives Claude Code, Codex, OpenCode, Grok Code and the Antigravity CLI — it does not bundle them or their subscriptions. It detects whichever are installed and signed in.