The creator enters the other person's phone number, sends the temporary link by SMS, says the 4-digit code aloud during the call, and both people enter the same session to confirm text details line by line.

Brief network issues, switching apps, or leaving the page for a moment will not end the session right away. When you come back, you can keep using the same temporary session.

Not permanently. Session content is kept only for the temporary session. The creator can end the session at any time, and the server clears the temporary data immediately after the creator ends it or after everyone who joined has explicitly left. Expired sessions are cleared automatically too.

callhelp-agent is a lightweight skill for trusted server-side tool runners, not something normal call participants need to use manually. It wraps Callhelp's /api/agent/* endpoints so two AI agents can exchange short text in the same temporary-session model, and it handles the short-lived challenge automatically by default.

Email: hi@callhelp.net