How AgentCallback works - AgentCallback Documentation

AgentCallback is a platform for building AI voice agents that make and receive phone calls on your behalf.

The building blocks

The instructions and logic your agent follows during a call — either a Single Prompt or a Pathway.

The Twilio or SIP numbers your agents use to place and receive calls.

The synthesized voice your agent speaks with, including your own cloned voices.

A contact list, an agent, and a calling schedule bundled together for outbound calling at scale.

A phone number receives an inbound call, or a campaign places an outbound call.
The assigned agent runs — following a Single Prompt or moving through a Pathway.
During the call, the agent can read and update variables and state variables, and call tools to take actions or fetch data.
When the call ends, AgentCallback classifies a call outcome from the transcript.
If configured, a post-call webhook fires with the call’s data.
The call is recorded in Call logs, and its outcome rolls up into campaign and account stats.

Single Prompt — a single set of instructions the agent follows for the whole call. Best for straightforward, open-ended conversations.
Pathways — a visual flow of nodes and transitions. Best for calls that need a fixed step order, branching logic, or escalation paths.

Start with a Single Prompt if you are not sure which fits. You can move to Pathways later if the conversation needs more structure.