What we know. And what we don’t.
Sight Bot runs in one of three modes. Each mode is a separate contract about what reaches our servers and in what form. No "bank-grade" hand-waving.
01 · Mirror Mode (DM) — default
Counterparty messages are copied into the DM between you and the bot. Delivery is usually under a second.
On the server side we store only an integer ID pair — mirror_mappings. The TTL on that row is 48 hours: enough to correctly process an edit or deletion, not enough to "accumulate" anything.
Message content, media, and contact names never reach our database. They flow through Telegram and stay in your DM with the bot — i.e. with you.
02 · Mirror Mode (private channel, Pro)
Same flow, but the mirror lands in your private Telegram channel. The bot publishes events there — your channel, your owner, your access controls.
Your own messages bypass our database entirely. The bot does not mirror them — controlled by --include-self=false (always off).
To wire it up, run /setup_archive — the wizard walks through channel selection and checks publish permissions.
03 · Standard (file_id only) — archive
If you want events to be re-readable via /history, /deleted or /edits, enable Standard. In this mode we store:
— Message text and caption, encrypted with AES-256-GCM. The master key lives on the operator (you). Without it, we cannot decrypt a single byte.
— Only the Telegram file_id for media. We do not download the files; the file_id itself is stored encrypted. Content access requires both Telegram having the source and you having the key.
— Retention: up to 30 days on Free, up to 365 days on Pro. Tunable with /retention.
What we do not store
No plaintext messages. No saved media on our side. No analytics tag on the site — no Google Analytics, no Mixpanel, no Hotjar.
No "email signup". The single conversion is: open the bot in Telegram and send /start.
Billing
Pro is paid in Telegram Stars: 250⭐/mo (recurring) or 2500⭐/yr (one-time). Purchase happens inside Telegram via the standard invoice — we never see a card number, do not work with Stripe or PayPal.
Subscription cancellation is a command inside the bot. We do not lock access past the paid period.
What about groups?
The Telegram Business API only delivers updates from private one-to-one chats. The bot cannot see group chats — that is a platform limit, not a product choice.
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