C5-it is a reasoning protocol designed to make the structure of a claim visible before you decide what to believe, share, or do.
How to check a claim step by step
C-it is a simple method to help you think clearly about news, headlines, and viral posts. Instead of asking “Is this true?”, it helps you ask: How is this claim structured?
This approach makes it easier to verify information without reacting emotionally.
It explains how a claim works — not whether it is true or false.
Most people stop at Lite.
The system in one view
Learn how it works
See how grammar, calibration, viral, and the tool fit together.
Grammar sets the stable rules.
Calibration claims test consistency.
Viral claims show real-world variety.
The tool makes it easy to run on any claim
Calibration claims
A fixed set used to compare outputs across claim types.
Viral claims
A rolling library organised by category.