> ## Documentation Index
> Fetch the complete documentation index at: https://cortex-ad5578da.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Introduction

> The retrieval layer with built-in memory. See how Cortex personalises your LLM apps, delivers exceptional results, and delights your users with a great experience.

## Meet Cortex

Building an AI app shouldn’t mean reinventing memory, search, and personalization from scratch.

We were tired of hacking together brittle pipelines—embedding tools, vector databases, ranking tweaks, caching layers—just to make AI apps *barely* feel intelligent. Why wasn’t there a Stripe-like SDK for memory and retrieval? So we built it.

**Cortex** is your plug-and-play memory infrastructure. It powers intelligent, context-aware retrieval for any AI app or agent. Whether you're building a customer support bot, research copilot, or internal knowledge assistant.

### Key Features

* **Dynamic retrieval and querying** that always retrieve the most relevant context
* **Built-in long-term memory** that evolves with every user interaction
* **Personalization hooks** for user preferences, intent, and history
* **Developer-first SDK** with the most flexible APIs and fine-grained controls

## Not Just Memory. Human Intelligence.

Cortex doesn’t just fetch documents. It **learns**, adapts, and gets smarter with time. Imagine giving your AI apps the ability to:

* Recall what users searched before
* Re-rank answers based on user behavior
* Offer personalized responses from evolving context
* Grow more useful with every conversation

It’s like giving your AI a second brain with human level search and long term memory.

## Getting Started

To begin using the Cortex:

1. **Obtain Your API Key:** You’ll need a API Key to interact with the API. Please [**contact us**](mailto:founders@usecortex.ai?subject=Interested%20in%20Cortex\&body=Hey%20Cortex%20team%2C%0A%0AI%20had%20a%20question%20about%20the%20SDK.%20Would%20love%20to%20chat.) to request an API key.
2. **Set Up Your Environment:** Follow our **Quickstart Guide** to configure your first request.
3. **Explore the API:** Dive into detailed documentation in our **API Reference**.

Feel free to [**reach out**](mailto:founders@usecortex.ai) if you have any questions or need assistance getting started.