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

> ## Agent Instructions
> Use the public API base URL: https://api.teamfollowup.ai/api.
> Authenticate public API requests with Authorization: Bearer YOUR_API_KEY.
> Use product-owned terms: agents, calls, campaigns, contacts, phone numbers, billing, and configuration.

# What an agent is

> An agent is the rep who actually makes the calls, every time, without the coffee breaks or the excuses.

An agent is the rep who actually makes the calls. Not the one who means to, or
gets to it tomorrow, or lets the list quietly rot in a spreadsheet. It dials, it
listens, it answers, it asks the next question, and it is just as sharp and just
as friendly on the hundredth call as it was on the first.

You give it three things:

1. **Who to call.** The campaign decides this (see [Campaigns](/campaigns/overview)).
2. **What to say.** Its opening line and its instructions (the [prompt](/agents/prompt)).
3. **What you want.** The goal, like "book a meeting" or "get them on the phone."

Then it picks up the phone and goes to work, one call at a time.

## You brief it, you don't script it

Here's the part that surprises people. You do **not** write out the whole
conversation. You can't, because you don't know what the other person will say.

Instead, you brief the agent like a new hire:

* Here's who you are and who you work for.
* Here's why you're calling.
* Here's what to do if they say yes, and what to do if they say no.
* Here are the lines you must never cross.

The agent fills in the actual back and forth by itself, in the moment. Your job
is to give it a clear goal and good rules, not a word for word script.

## What you decide about an agent

Every agent is made of a few simple choices. Each has its own guide:

<CardGroup cols={2}>
  <Card title="Its type and capabilities" icon="list-checks" href="/agents/agent-types">
    What starts the call, and what the agent can do on it: book a meeting,
    transfer to a human, tag a lead.
  </Card>

  <Card title="What it says" icon="message-square" href="/agents/prompt">
    Its first line, and the instructions that guide the whole call.
  </Card>

  <Card title="How it sounds" icon="audio-lines" href="/agents/voice">
    Its voice, speaking speed, language, and background feel.
  </Card>

  <Card title="What it records" icon="clipboard-list" href="/agents/outcomes">
    What it figures out on each call and writes down for you.
  </Card>
</CardGroup>

<Note>
  An agent doesn't call anyone until it's attached to a campaign and that campaign
  is switched on. Building the agent is safe. Nothing dials until you say so. See
  [Going live](/campaigns/going-live).
</Note>