1. Contact
Email support@closure.fast. We aim to respond within two business days. For anything about an order, write from the address you used at checkout and include the receipt or order identifier so we can find it quickly.
2. Your order
Closure Engine is delivered by email to the checkout address, with the software package, installation instructions, and your license. Our target is one business day after payment is confirmed. If it has not arrived, check spam and filtering folders, then email us from the purchase address and we will resend it.
3. Installing Closure
The Claude Desktop extension needs nothing else installed; the package needs Node.js 24 or newer. The delivery email, the included getting-started guide and setup for each app cover installation and a first run. The field guide explains how Closure reads requirements and evidence. If a step fails, send us the command you ran and the output you saw, leaving out anything sensitive from your repository.
4. Billing and receipts
Closure is a one-time purchase with no subscription or renewal. Checkout is handled by Stripe, and Link acts as the merchant of record, so your receipt comes from Link and your statement identifies the purchase as closure.fast. Questions about a charge can come to us first; Link also provides transaction support for payments it processes.
5. Refunds
You can request a full refund for any reason within 14 calendar days of purchase by emailing us from the purchase address. The Refund and Delivery Policy has the details.
6. Who sells Closure
Closure Engine is sold by 3DCarParts LLC under the closure.fast name. Use of the software is governed by the Terms and Software License, and support information is handled under the Privacy Policy.