Three steps. All on your computer.
Nothing changes about how you use ChatGPT, Claude or Gemini. Trusky works in the moment between pressing Enter and the message leaving your browser.
You type as normal
Names from your list, emails, phone, card and account numbers light up as you write.
The AI gets codes
The same client always gets the same code, so the AI can still follow the story.
You read real names
When the answer comes back, the codes turn back into names, only on your screen.
Attach a file. Send a coded copy.
Drop in a Word document, a spreadsheet, a PDF or a text file. Trusky codes the names inside it, and in its file name, before the AI gets it. Your own file is never changed.
Dear Sarah Jennings,
As discussed with Bodden Holdings, please sign by Friday and email s.jennings@fastmail.com.
Dear [CLIENT_1],
As discussed with [CLIENT_2], please sign by Friday and email [EMAIL_1].
- Word and Excel stay Word and Excel, with headers, tables, comments and tracked changes coded too.
- PDFs go as a coded text copy.
- Scans, photos and voice chats can't be read, so Trusky asks you first and notes it if you send anyway.
- Editing an earlier message? Trusky checks that too.
Prove it, in one page.
Trusky keeps a tamper-evident log of counts, never content. When a client, insurer or regulator asks how you use AI, download a one-page attestation made on your computer.
It does not claim the messages held no confidential information. It records what Trusky coded, and what you chose to send as it was.
- Honest by design. It says what the log shows and what it does not, so it holds up when someone checks.
- Checkpoints. Each attestation carries a fingerprint, so a later one can be checked against it.
- Made on your computer. No account, no upload, no Trusky server.
Your list. Your receipt.
Tell Trusky who matters, and it keeps a record you can show a client or a court. Edit the list and type above to see it work.
Your client list
Names here are always coded, including ones Trusky would not spot on its own.
Trusky receipt
The demo on this page runs in your browser and sends nothing. Spotting, coding and the review step use the same code as the Trusky Chrome extension, which works on chatgpt.com, claude.ai and gemini.google.com in Chrome; the replies here are written by this page, not an AI. The numbers on the sample attestation are made up. Trusky does not yet catch a person described without a name, such as "the only harbour pilot in West Bay". Add those clients to your list.
© 2026 Tamsin Deasey-Weinstein Privacy tamsin@tamsin.ai