Terms

Last updated October 5, 2026

Cortex is a product of The Second Brain Company, run by Arni Hermann Reynisson, an individual based in the United Arab Emirates. Free signup is open. Pro is available by invitation in private preview. Installing the public plugin does not create an account or grant access to private knowledge.

Your knowledge

Your team keeps ownership of the knowledge it adds. You let Cortex store, process, and share that knowledge with people and AI tools you authorize so the service can work. Only add material you have the right to use and share. You can download your knowledge through the available Git access.

Your access

Keep your sign-in codes, invitation links, and connected-app access private. Follow your Brain's roles and do not use the service to break the law, harm others, or interfere with the service. We may limit or suspend access to protect people and the service.

Service changes

Cortex is an early service and may change or have interruptions. AI answers can be wrong; check important information before relying on it. If these terms change, we will update the date on this page.

Questions? Email support@thesecondbrain.company.