Quickstart

You need two things before the first diagram: the licence key that arrived by email, and an Anthropic API key of your own.

Install

Download the installer for your platform from the link in your purchase email, and run it. The app is self-contained — the fonts are compiled in, and there is no Node, headless browser, JVM or Graphviz to install alongside it.

On macOS the first launch may need a right-click and Open, depending on whether the build you have is notarised.

Enter your licence key

The app asks for it on first launch. It is checked once against Polar and then remembered, so it works offline afterwards.

A seat is a person, not a machine. Install it on your laptop and your desktop if you like.

Get an Anthropic API key

Create one at console.anthropic.com and paste it into the app when asked. It is stored in your operating system's keychain, never in a config file, and it is used directly from your machine — it never passes through any server of ours, because there is no server of ours.

Anthropic bills you for what you use. That is deliberate: it is why there is no per-diagram charge here.

If you would rather not use the keychain, set ANTHROPIC_API_KEY in your environment and the app will use that instead.

Draw something

Type what you want:

A three-tier architecture: a load balancer feeding two app servers, both talking to one Postgres database.

The assistant builds it, renders it, looks at the result, and fixes what it got wrong before handing it back. When you like it, export with Save as — SVG, PNG or PDF.

Where the files live

Diagrams are ordinary .svg files in a workspace folder you choose. Open them in Inkscape, commit them to git, email them. The scene graph lives in the file's <metadata> block, so the file is both the deliverable and the database.

One caveat worth knowing: if you hand-edit the visible SVG body, those edits are discarded the next time the tool touches the file. It tells you when it notices.