Text messaging program

xChk approvals by SMS · operated by Maclawran LLC

What you get: a text message when one of your own AI agents needs your approval for a consequential action, with a link to review and decide. Nothing else. No marketing, no third-party messages.

Program description

xChk lets a person license an AI agent and set what it may do on its own. When the agent proposes an action outside that authority, xChk asks the licensed person to decide. If you have enabled SMS approvals in your xChk account, that request reaches you as a text message from xChk, with a link to the approval card. You decide on the card with your passkey; the text message itself is only the doorbell.

Use case: 2FA / app notifications — transactional authorization requests for actions in your own account. Messages are event-driven and sent only to numbers whose owners enrolled them.

How you opt in

Consent is collected inside your own xChk account, after you have signed in, on the notifications settings page. The SMS consent is a separate, unchecked checkbox; it is not bundled with any other consent, and no number is enrolled without it. You then confirm the number by entering a one-time code we text to it. The checkbox reads:

xChk · text messages from Maclawran LLC

You are subscribing to xChk (Maclawran LLC) for approval requests and account alerts. Reply STOP to opt out. Reply HELP for help. Standard message and data rates may apply. Message frequency may vary. View our Terms and Conditions. View our Privacy Policy.

Enrolling a number that belongs to someone else is not permitted; the one-time code makes sure the person holding the phone is the one consenting.

Sample messages

xChk: your agent CMP-YJ2T (Claude Code) wants to run "git push origin main". Review and decide: https://xchk.me/a/8f2k1q — Reply STOP to opt out, HELP for help.

xChk: approval for CMP-YJ2T expires in 5 minutes. Review: https://xchk.me/a/8f2k1q — Reply STOP to opt out, HELP for help.

xChk: emergency stop pulled on ENG-STAGE by sean@example.com. Every action is refused until resumed. Details: https://xchk.me/pewpew — Reply STOP to opt out, HELP for help.

Frequency, cost, opting out

Message frequency varies. You receive a message when one of your agents requests approval or when a stop is pulled on a plate you answer for. A quiet agent sends nothing.
Message and data rates may apply, per your carrier's plan.
Reply STOP at any time to unsubscribe. You will receive one confirmation message and nothing further. Reply START to resubscribe.
Reply HELP for help, or email support@xchk.io, or call +1 305 240 2984.
You can also turn SMS approvals off in your account settings at any time; approval requests then reach you by the other channels you have enabled.
Carriers are not liable for delayed or undelivered messages.

Your mobile information

We will not share or sell your mobile information with third parties for promotional or marketing purposes. Your mobile number is used only to deliver the xChk messages you enrolled for, to confirm delivery, and to honour STOP and HELP requests. Our full policy is in the Privacy Policy; the program terms are in the Terms and Conditions.

Supported carriers

Messages are sent from a US toll-free number to US and Canadian mobile numbers on major carriers. Carriers are not liable for delayed or undelivered messages.