Describe the website you want. A Claude-powered design agent builds it in front of you, page by page, and revises it when you ask. You bring your own pay-as-you-go API key, so there is no subscription and no retainer. You pay for the work and nothing else.
Describe the site you want with the guided spec builder.
Add your pay-as-you-go Anthropic API key.
Watch the agent design every page live.
Revise by prompt, then export or hand off for a build.
spec.json{
"project": "Untitled",
"type": "restaurant",
"vibe": "neo-metal",
"pages": [
"home",
"about",
"contact"
],
"responsive": true,
"export": "code"
}Sessions run on your own Anthropic API key and are billed by Anthropic at their published pay-as-you-go rates.
No monthly plan and no seat fees. When the agent is not working, you are not paying.
Set spend limits in the Anthropic Console so a session can never run past your budget.
Watch tokens tick in real time during the session. No credits, no markup maths.
| Feature | TEMPLATE BUILDER | DESIGN AGENT | CUSTOM BUILD |
|---|---|---|---|
| Design | Shared template | Generated from your spec | Hand-crafted |
| Turnaround | Hours of fiddling | One live session | Weeks |
| Cost model | Monthly subscription | Pay per use, your key | Project quote |
| Revisions | Drag and drop | Ask in plain English | Review rounds |
| Code | Locked to platform | Exportable | Full source |
Need the full build? Start a custom project →
The design agent runs on Claude. Instead of paying us a subscription, you connect your own Anthropic API key from the Anthropic Console. Every design session is billed to that key at Anthropic's pay-as-you-go rates, so you only pay for what the agent actually does.
Create an account at console.anthropic.com, add billing, and generate a key under API Keys. You can set spend limits there too, so a session can never cost more than you are comfortable with.
Yes. Everything the agent produces for your spec is yours, including the exported code.
Hand the finished design off for a full build. Devon Kiss can turn it into a production app with a backend, auth, payments and hosting, starting from exactly what you approved.
The design agent is in early access. Join the list and you will be invited as seats open, in the order people signed up.
Get an invite as soon as seats open. Attach a spec and the agent's first session is ready to run the moment you're in.