NorthSyte spots personal details, passwords, and card numbers in your prompts before they reach AI. It runs entirely in your browser, never stores your info, and stays out of your way. Free for individuals, built for teams.
Using AI at work? See NorthSyte for Teams →
We ask AI for help with the personal stuff: taxes, health questions, a tricky email, a login that won't work. It's easy to paste in more than you meant to, and once it's sent, you can't take it back.
Pasted with your SIN or SSN still in it.
Your name, health card number, and results, all in one prompt.
Someone else's phone number and home address included.
A lightweight browser extension that has your back, without slowing you down.
Personal details, passwords, and card numbers are flagged in your prompt before anything reaches the AI.
No lectures, no blocking. NorthSyte shows you what it found and rewrites the prompt for you, so you can keep going.
Everything runs right in your browser. Your prompts are never stored or sent to us.
A real prompt, typed the way you'd type it. Pick a situation and watch what NorthSyte catches.
Caught by pattern rules Caught by the in-browser AI layer
Pattern rules for the things that follow a format, and an in-browser AI model for the things that don't.
API keys for AWS, OpenAI and Stripe, GitHub and Slack tokens, private keys, passwords, bearer tokens, database connection strings, internal URLs and IP addresses.
Credit card numbers verified with the Luhn checksum, security codes, IBANs, US routing numbers, SWIFT/BIC codes and CRA business numbers.
Canadian Social Insurance Numbers with a Luhn check, US Social Security Numbers, Canadian and US passports, and driver's licences across select provinces and states.
Provincial health card numbers across Ontario, BC, Quebec, Alberta, Newfoundland and the Northwest Territories, plus US provider IDs, DEA numbers and Medicare IDs.
Email addresses, phone numbers and Canadian postal codes, alongside the names and addresses that usually travel with them.
A model running inside the browser reads meaning, not formats, so it catches the names and street addresses that no pattern rule could ever match.
The same protection for your whole team, plus a dashboard that shows where sensitive data shows up and training built on your own usage. Prompts are never stored.
Join the waitlist and we'll let you know as soon as NorthSyte is ready to install. Free for individuals.
No spam. Just one note when we're ready for you.