Phone numbers, SMS and voice for AI agents

Build an agent workflow with phone

A support or operations agent may need to continue a conversation beyond email. Lupin exposes number inventory, SMS and call operations through the same workspace API, while keeping number ownership, permitted destinations and the actual provider outcome attached to each operation.

What the API supports

• Search available phone number inventory before purchase
• Send and receive SMS on configured numbers
• Create and inspect call operations
• Use configured AI voice profiles for supported conversations
• Inspect call status, transcripts and timing diagnostics

From setup to a verified outcome

1. Check the workspace

   Read capabilities and phone status before requesting a number or a call. Number and country availability depends on the configured phone provider.

2. Choose the operation

   Review the number, destination, recurring price or call duration. The calling application must hold the applicable permissions and authorization.

3. Track the result

   Keep the original operation identity and inspect call or message status. A provider acknowledgement is not proof that a person answered or a message was delivered.

Availability and limits

• Phone numbers, SMS and calls have provider-dependent charges and availability.
• Live AI calls require an explicitly configured voice profile, an allowed destination and an available allowance.
• Caller ID alone does not grant access to private workspace tools. Sensitive actions still follow the workspace’s review rules.

Check your workspace for its current configuration, usage and limits. Compare the plans before creating paid resources.

Start with the API reference

The following read endpoint is part of this capability. Authenticate with the relevant workspace key and inspect the documented response and permission requirements.

OpenAPI specification · Phone documentation · Agent registration

Common questions