Run a hearth node in your browser

Node.js boots inside this page and runs a real hearth node with stand-in backends, so you can open the console, write rules and mint keys without installing anything. Nothing leaves your machine.

What you change is saved in this browser only. Your node's hearth.yaml is kept in this browser's storage, not on our server. Another browser, a private window, or clearing this site's data starts you over.

Chrome, Edge and Firefox on a desktop. Boot takes about fifteen seconds.

Welcome back

This browser has a saved node from , started from .

Starting the node

Fetching files

This browser cannot run the demo

The page needs cross-origin isolation and SharedArrayBuffer, which this browser did not provide. Chrome, Edge or Firefox on a desktop will.

You can still run it locally: clone the repo and run npm install && npm run demo.