Overview

This node checks if a contact exists based on a provided phone number within a specified session. It is useful for verifying the presence of a contact in a system before performing further actions, such as sending messages or updating contact details. For example, it can be used in customer support workflows to confirm if a customer's phone number is registered.

Use Case Examples

1. Check if a phone number exists in the contact list before sending a promotional message.
2. Verify contact existence during onboarding to avoid duplicate entries.

Properties

Output

JSON

• exists - Boolean indicating if the contact exists.
• phone - The phone number checked.
• session - The session identifier used for the check.

Dependencies

• Requires an API key or session token for authentication to access the contact checking service.

Troubleshooting

• Ensure the session identifier is valid and active; invalid sessions will cause authentication errors.
• Verify the phone number format is correct; malformed numbers may lead to false negatives.
• If using a proxy, confirm proxy settings are correct to avoid connection failures.
• Timeout errors may occur if the server is slow or unreachable; consider increasing the timeout setting.