← Labs Rules run in your browser · no AI model
Data lab · Rule checking

Check a proposed fact before adding it.

This demo checks new facts against a small set of rules. It accepts facts that fit, rejects contradictions, and shows the reason for each result. The checking runs in your browser.

Rules used by this demo
Proposed facts from generated examples
Propose your own fact
Accepted facts ·
Choose Check this fact beside an example, or build your own fact. The result will show Accepted or Rejected and explain Why.

Every result includes a reason

A rejected fact shows the smallest set of accepted facts and rules that creates the contradiction.

Check before adding

A knowledge graph stores facts and their relationships. Checking a proposed fact first helps keep later searches from using a contradiction.

Rules do active work

The rules can add facts that logically follow from accepted ones. They can also stop a fact that would make two incompatible statements true.

See a rule change search

Try the related independent lab about how one relationship changes the facts an AI search can use.

This is an independent demonstration with a deliberately small rule set and public-transport-inspired labels. Its proposed facts are generated examples, not facts from a production system or client delivery. A production reasoner may support many more rules and review steps.