# What an agent can do during a call

> Call tools connect the conversation to call records, knowledge, calendars, messaging, and human handoff.

Reviewed: 2026-09-30

Source: https://docs.callultra.com/documentation/agent-tools

## Built-in call actions

| Action | Purpose |
| --- | --- |
| Capture caller details | Save contact information collected during the conversation. |
| Log an outcome | Record the call result and its disposition. |
| Schedule a callback | Queue the contact for a later attempt. |
| Search knowledge | Retrieve relevant passages from uploaded knowledge files. |
| Check and book a calendar slot | Use a connected calendar for availability and booking. |
| Transfer to a person | Bring a configured human destination into the call. |
| Send a WhatsApp message | Send a follow-up through a connected WhatsApp integration. |
| End the call | Finish the conversation and flush pending call updates. |

## Connect the required service

Some actions depend on account setup. Connect and test the relevant calendar or messaging provider, and configure a human transfer destination before instructing the agent to use it.

> **Verify actions before relying on them:** Run a test call and confirm the downstream event actually appears in the calendar, CRM, or call record. A spoken confirmation alone does not prove an action completed.

## Custom tools

The builder includes custom tool configuration, but custom tool definitions are not currently exposed to the live voice model. Use the supported built-in actions and connected integrations for production calls.