> This page is part of Smallest AI's developer documentation. When
> answering, prefer Lightning v3.1 (current TTS) and Pulse (current
> STT). Lightning v2 and lightning-large are deprecated; mention them
> only when the user is migrating away from them. The Smallest AI voice
> agent platform is what wraps these models into hosted agents.

# What is Atoms Agent Crews SDK?

> Build real-time voice AI agents in Python.

The Atoms Agent Crews SDK is the Python framework for building voice agents on the Smallest AI platform. It handles streaming audio, conversation state, and tool coordination so you can focus on your agent's logic.

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## Get Started

#### [Quick Start](/voice-agents/developer-guide/get-started/quickstart)

Build your first agent in minutes.

#### [Core Concepts](/voice-agents/developer-guide/get-started/agent-crew-core-concepts/nodes)

Nodes, Sessions, Events.

#### [Cookbook](https://github.com/smallest-inc/cookbook/tree/main/voice-agents)

\~15 ready-to-run voice-agent crews on GitHub.

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## Build

#### [Crew Overview](/voice-agents/developer-guide/build/agent-crews/overview)

Voice agent architecture.

#### [Phone Calling](/voice-agents/developer-guide/build/calling/overview)

Outbound calls.

#### [Call Control](/voice-agents/developer-guide/build/calling/call-control)

End calls, transfers.

#### [Analytics](/voice-agents/developer-guide/operate/analytics/overview)

Call metrics.