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

# Overview

> The ACI.dev API powers the ACI.dev platform and SDK.

<Note>
  Most of the time, you won’t need to interact with the API directly. Instead, you should use our offerrings through either [platform](platform.aci.dev) or [SDK](https://github.com/aipotheosis-labs/aci-python-sdk).
</Note>

<Note>
  Our [SDK](https://github.com/aipotheosis-labs/aci-python-sdk) interacts with these APIs under the hood, but provide additional agent-centric features specifically designed for LLM-based agents.
</Note>

## Authentication

For programmatic access, the API supports API key-based authentication. You can generate an API key by creating an agent on [ACI.dev platform](platform.aci.dev).
You can then provide this API key to SDK environment variable or set it in `X-API-KEY` header if you are calling API directly.

<Card title="Sign up to ACI.dev" icon="lock-open" href="https://platform.aci.dev/" />