The short version
- crux runs on your computer, not ours. Your bid documents, drawings, estimates, rates, pricing, proposals, chats and company knowledge stay in your own folders. We never receive, store or see them.
- The AI works through your own Claude account. When crux reads a document for you, it goes to Anthropic under your agreement with Anthropic, not through us.
- Our servers handle licensing and billing only: your email, your license key, a device key for your one computer, and license and usage events.
- This website has no cookies, no analytics, no ads and no trackers.
- Stripe handles payments. We never see or store your full card number.
- We don't sell or rent personal information, and we don't use it for advertising.
01Who we are
crux is provided by crux ai llc ("crux", "we", "us"). We're responsible for the personal information described here. This policy covers the cruxai.bid website, the crux desktop app and the services behind them (licensing, updates, billing and support).
02What we collect
When you visit this website
The site is static. It sets no cookies and runs no analytics or third-party scripts. Our hosting provider, Cloudflare, processes technical data needed to deliver and protect the site, such as your IP address, browser type and the pages requested, in short-lived logs. If you change the colour theme, your choice is saved in your own browser only.
When you contact us or request early access
The early-access form doesn't send anything by itself; it opens an email in your own mail app. If you send it, or email us directly, we receive what you write: typically your name, company, email address and anything else you include.
When you subscribe and use crux
| Information | What it is | Why |
|---|---|---|
| Email address and name | From checkout, or from you | Your account, license delivery, receipts, service notices, support |
| License | Your license key, plan, seat count, status and dates | To know what you've paid for and activate your seats |
| Device public key | A cryptographic key the app creates on your computer when you activate a seat. We store only its public half. It isn't your name, files or hardware serial numbers. | To bind a seat to one computer and stop license sharing |
| Usage events | Licensing and product events with timestamps, such as activation, deactivation, license checks, app version and update checks | To run licensing and updates, prevent abuse and fix problems |
| Billing details | Held by Stripe. We receive limited information such as your name, email, billing country and postal code, the card brand and last four digits, and payment status. | To bill you, handle taxes and answer billing questions |
| Support messages and diagnostics | What you send us. If you press Send diagnostics in the app, the app's logs, with secrets removed. | To help you |
03What we never receive
crux is a harness, memory system and knowledge base that runs on your own computer. The work you do in it stays there. We never receive, store or see:
- Your bid documents, drawings, specifications, addenda, takeoffs, estimates, proposals, RFIs, rates, pricing, material costs, templates or company files. These stay on your computer, in folders you choose.
- Your chats in crux or the company knowledge crux builds up for you. These are stored on your computer.
- Your backups and company profiles. These are files you save where you choose, protected with a password you choose. We can't open them.
- Your full card number or card security code. Stripe handles those.
- Your Claude account credentials or your conversations with Claude.
- Your email inbox or calendar. If you connect them, you do so in Claude with Anthropic's own connectors.
04Your documents and Claude
crux runs on your own Claude subscription. To read your documents and draft your work, the crux app, running on your computer, sends the relevant content to Claude through Anthropic's official Claude app, signed in to your Anthropic account. That processing is between you and Anthropic and is governed by Anthropic's terms and privacy policy, not ours. Anthropic is not our service provider for this, and we don't receive that content.
05How we use information
- to provide crux: activating seats, checking licenses, delivering updates;
- to bill you and keep required business and tax records;
- to send you service emails, such as your license key, receipts, renewal reminders and important changes;
- to answer support requests and early-access requests;
- to keep crux secure, prevent license sharing and fraud, and fix problems; and
- to meet legal obligations.
We'll only send you product news if you've asked for it, and every such email will let you opt out. We don't sell or rent personal information, share it for cross-context behavioral advertising, or use it to train AI models.
06Service providers
We use a small number of companies to run crux. They process information on our behalf and under their own security commitments.
| Provider | What they do for crux | Information involved |
|---|---|---|
| Stripe | Checkout, subscriptions, billing portal, receipts, tax calculation | Name, email, payment and billing details |
| Cloudflare | Hosts this website, the license server and its database, and the update feed | Email, license, device public key, usage events, technical request data |
| Resend | Sends our transactional emails, such as license keys and notices | Email address, name and the message content |
07Other sharing
We share personal information only with the providers above, when you ask us to, when the law requires it (for example, a valid court order), to protect the rights and safety of our users or crux, or as part of a merger, acquisition or sale of the business, in which case this policy continues to apply to your information.
08How long we keep it
- Account, license and device records: while your subscription is active, then up to 24 months after it ends so you can come back, then deleted or anonymized.
- Usage events: up to 24 months.
- Billing and tax records: as long as tax law requires, usually up to 7 years.
- Support emails and early-access requests: up to 24 months after our last exchange.
You can ask us to delete information sooner; see your rights below.
09Security
We keep what we hold to a minimum. Connections to our servers are encrypted, license checks are cryptographically signed, and access to our systems is restricted. No system is perfectly secure; if a breach affects your personal information, we'll tell you as the law requires.
10Your choices and rights
Wherever you live, you can ask us to tell you what personal information we hold about you, give you a copy, correct it, or delete it. Email support@cruxai.bid from your account email. We'll respond within 30 days and won't treat you differently for asking. Some records, such as billing records, we must keep by law.
Depending on where you live (for example California, or the European Economic Area and the UK), you may have additional rights, such as to object to or restrict processing, or to complain to your local data protection authority. Where European law applies, we rely on performing our contract with you, our legitimate interests in running and securing crux, and our legal obligations.
11Children
crux is a business tool and isn't meant for anyone under 18. We don't knowingly collect information from children.
12Where data is processed
We're based in the United States, and our providers may process information in the United States and other countries where they operate. Where the law requires it, we rely on appropriate safeguards for international transfers.
13Changes to this policy
If we change this policy, we'll post the new version here with its date. If the change is significant, we'll email subscribers before it takes effect.
14Contact
Questions or requests about privacy: support@cruxai.bid.