> ## Documentation Index
> Fetch the complete documentation index at: https://docs.agentcallback.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Using Agent Builder

> Generate a starting agent configuration from a call goal or existing script.

AI Script Builder gives you a starting configuration based on a description of your call or an existing script, instead of starting from a blank agent.

## When to use AI Script Builder

<Tip>
  Use AI Script Builder when you have a call goal or existing script but want a fast starting point. Use a blank script when you already know the exact configuration you need.
</Tip>

## Describe your call

When you choose **AI Script Builder** while creating a new agent, describe what the call should accomplish, or paste an existing script or transcript you already use. AgentCallback uses this input to create a starting configuration for the agent.

## Review the generated configuration

Open the generated agent and review its instructions, script type, and any suggested settings before you rely on it. Treat the output as a first draft — run a test call and adjust anything that doesn't match how you want the conversation to go.

## Fine-tune manually

From here, refine the agent using the same tools available to any agent:

* Adjust the instructions on a [Single Prompt](/build-voice-agents/single-prompt) agent, or rebuild the flow visually with [Pathways](/build-voice-agents/pathways).
* Add [variables](/build-voice-agents/variables) for data the agent needs before the call starts.
* Add [tools](/build-voice-agents/tool-calls) for actions the agent should take during the call.

## Next step

[Single Prompt](/build-voice-agents/single-prompt) or [Pathways](/build-voice-agents/pathways) to configure your agent's conversation logic in detail.