Book 0xdesigner

Open the Claude Code or Codex row above and paste its prompt into your agent. It connects 0xdesigner, and you sign in once with an email code. Then, in a new session while you're building, say "Give this to 0xdesigner." Your agent hands over the task you're already working on.

No. Your agent drafts it from your conversation and project, asks only where the goal, audience, constraints or scope are unclear, and shows you the brief and any files it wants to share before it gets a quote.

Yes. Add a line like this to a skill, AGENTS.md or CLAUDE.md: "When I ask for design help, draft a brief for 0xdesigner from this project and show it to me before quoting." Your agent still asks before sharing each file, and nothing is sent until you reply yes to the quote.

Product, interface and interaction design for web and mobile products: flows, screens, layout, hierarchy and interaction states. The work is done by 0xdesigner, one independent human designer.

Only the brief, links and files you approve. Connecting doesn't give 0xdesigner your conversation or your repository, and a private repository link grants no access.

Low gets you a focused decision, an annotated critique or a small code change. Medium and above get a hosted prototype and its complete source; a pull request only if your brief asks for one. At Normal speed, Low to Max are delivered within 48 business hours of sending. Fast delivers Low to High within 24 business hours for 1.5× the credits. Ultra is delivered 3 business days after a confirmed start. Business hours are Monday to Friday, New York time. These are promises, not guarantees, and unanswered questions never pause the clock.

Fixed blocks of human design time. More time buys more exploration and refinement, not a different standard. A credit is 15 minutes of design time; Ultra, a full day, is 64 credits. Your agent suggests a level, Medium by default, at Normal speed; ask for Fast when you need it within a day. The quote shows the level, speed and credits before you approve.

When you approve a quote that needs more credits than you have. Credits are prepaid through Stripe in packs, and bigger packs cost less per credit. When a quote needs more credits, the smallest pack that covers it is marked; what’s left stays in your account for future requests. Sending a brief holds its credits; they're charged when 0xdesigner accepts. Prices are before tax, and every purchase comes with an invoice in your account.

Credits held for a brief go back to your balance if 0xdesigner declines it or you cancel before acceptance. Purchased credits expire six months after purchase and aren't refundable; if you ask, for example after a late delivery, 0xdesigner decides. If the service shuts down, unused paid value is refunded.