# SI Check

> SI Check is an independent tool for checking messages, links and phone numbers before you trust them. It measures what can be measured with ordinary code, asks SI (superintelligence) for a judgment, and shows both, separately, in a report that stays private unless its owner chooses to share it. It never says something is "safe".

- 3 free checks a day, no account. SI Check Plus (paid) adds more checks and deeper analysis: https://sicheck.com/plus
- No ads, no affiliate links, no data sales: https://sicheck.com/charter
- How a check works and where it fails: https://sicheck.com/method
- Field guide to 14 common scams: https://sicheck.com/field-guide
- What to do if you already clicked or paid: https://sicheck.com/already-clicked
- Reports (https://sicheck.com/r/...) are private to whoever holds the link and should not be indexed or cited.
- SI Check never contacts people first and never asks for a password, a code or a payment.