xChk Terms of Service

Effective: August 26, 2026

These terms govern your use of xChk, an authorization and evidence layer for AI agents. By creating an account or using the service, you agree to these terms. Questions: support@xchk.io.

The service

xChk lets you authorize, hold for human approval, or refuse the consequential actions of AI agents operating under your license, and it records those decisions as tamper-evident evidence. You are responsible for the agents and actions you authorize and for keeping your account credentials secure.

Acceptable use

SMS / text-message program

If you enable SMS approvals, xChk sends transactional authorization requests to the mobile number you provide, so you can review and approve or deny your agents' consequential actions. You opt in by entering and verifying your mobile number in your account settings.

Your mobile number and SMS consent are used only to deliver these notifications and confirm their delivery, and are not shared with third parties for marketing. See the Privacy Policy for details.

Evidence and records

Authorization records are retained as tamper-evident evidence for audit and legal purposes. xChk does not guarantee that any control will prevent every agent action; the service's purpose includes making unauthorized or unrecorded actions detectable.

Disclaimers and liability

The service is provided "as is," without warranties of any kind to the extent permitted by law. To the maximum extent permitted by law, xChk is not liable for indirect, incidental, or consequential damages, or for messages delayed or not delivered by carriers.

Changes and termination

We may update these terms; material changes will be posted here with a new effective date. You may stop using the service at any time; we may suspend or terminate accounts that violate these terms.

xChk · Trust · Verify · Proof · Contact support@xchk.io · See also our Privacy Policy.