Built-in tools

Built-in tools are actions every agent can take during a call, without connecting any external account. Enable them per agent version in the Tools card of the builder; each has a small configuration of its own.

Tool	What it does	Configuration
Current time	Lets the agent know the current date and time in your timezone — useful for “are you open now?”, relative dates, and reasoning about opening hours.	Timezone (IANA name, e.g. `Europe/Madrid`)
HTTP request	Look up live data from your own API endpoints over HTTPS. The agent can only reach hosts you allow.	Allowed hosts (comma-separated; https only)
Send email	Email a message or callback request to your inbox — e.g. “a caller wants you to call them back at …”. The recipient is fixed by you; the agent writes subject and body.	Recipient email address
Transfer to a human	Hand the call off to a real person when the caller asks for one or the agent can’t help. The agent announces the transfer before doing it.	Target phone number (E.164)
Hang up call	Lets the agent end the call once the conversation is over, after saying goodbye.	—

Tools are versioned with the agent: enabling or reconfiguring a tool edits the draft and only goes live when you publish.

Tool audit

Every tool invocation during a call — built-in or from an integration — is recorded: tool name, arguments, result, status, and duration. Expand any call on the Calls page to see the full trail.

Need more than the built-ins?

Connect integrations: Google Calendar scheduling, email from your own domain via Resend, webhooks with secret headers, or any custom MCP server you run.