hawklinehawkline.app

Privacy

Last updated 19 September 2026 · plain language on purpose

What we store

• Your account: the email address you sign in with (via Supabase, our auth and database provider). Google sign-in shares only your email with us.
• Your watchers: the page URLs, names, check intervals and delivery targets (email addresses, Slack webhooks, Telegram chat ids) you enter.
• Page snapshots: the text content of pages you watch, kept so we can tell what changed between checks.
• Alert history: the summaries we sent you.
• Billing status: your plan and Stripe customer reference. Your card details live at Stripe; they never touch our servers.

How the AI is involved

When a watched page changes, its text is sent to Anthropic's API (the company behind Claude) to write the summary. Under Anthropic's commercial terms, API data is not used to train their models and is retained only briefly for abuse prevention. We send page text, never your account details.

What we don't do

• No ads, no selling or renting data to anyone, ever.
• No tracking pixels, no third-party analytics scripts on this site.
• No reading your alerts for any purpose beyond operating the service.

Cookies and storage

The desk keeps your sign-in session in your browser's local storage. That's it. No advertising or cross-site cookies.

Who processes data for us

Supabase (database and authentication), Vercel (hosting), Anthropic (AI summaries), Resend (email delivery), Stripe (payments), Telegram and Slack (only if you use those delivery rails). Each receives only what it needs to do its job.

Deleting your data

Deleting a watcher removes it and stops its checks. To delete your whole account and its history, email hello@hawkline.app from your sign-in address and we'll confirm within a few days.

Questions

Hawkline is operated from Singapore. Anything unclear, ask: hello@hawkline.app.