> ## Documentation Index
> Fetch the complete documentation index at: https://docs.clerk.chat/llms.txt
> Use this file to discover all available pages before exploring further.

# Send otp link

This tool sends a magic link verification to an email specified in the tool.

Use case:

* Used in an agent that collects an email address from a user and verifies the user has access to that email address.

Parameters:

* `recipient` should be the customer's email address.
* `Message` is the body of the verification email.
* `Expiry minutes` is the length of time in minutes until the magic link expires.
* `Subject` is the subject line of the email with the magic link.
* `sourceIdentifier` is the the stable primary identity you anchor verification state to. It answers: “For which entity do I store and later check verification?”. Usually this will be the phone number `contact.phone`.