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

# Introduction

# Welcome to the Atom API Docs

The Atom platform provides a suite of APIs that let you programmatically search, discover, register, appraise, and manage domain names. Whether you're building a domain marketplace, embedding domain search into your product, or automating portfolio management, these APIs give you the building blocks to do it.

<CardGroup cols={2}>
  <Card title="Partnership APIs" icon="handshake" href="/api-reference/parnership_apis/semantic_search">
    Search and acquire premium domains from the Atom marketplace. Use AI-powered semantic search, browse curated inventory, hold domains, and complete purchases.
  </Card>

  <Card title="Registrar APIs" icon="server" href="/api-reference/registrar_apis/check_domain">
    Register new domains, manage DNS records, configure nameservers, set up URL forwarding, and handle DNSSEC — all through a single API.
  </Card>

  <Card title="Seller APIs" icon="store" href="/api-reference/seller_apis/domains">
    List and manage your domain portfolio on Atom. Update pricing, add descriptions, assign categories, track analytics, and manage sales.
  </Card>

  <Card title="Intelligence APIs" icon="wand-magic-sparkles" href="/api-reference/appraisal_apis/domain_appraisal">
    AI-powered domain appraisal and USPTO trademark search.
  </Card>
</CardGroup>

## Getting Started

To use the APIs, you will need:

* **API Key** — a unique token for authenticating your requests
* **User ID** — your Atom account identifier

You can generate API keys and manage access from the [Atom Developer Console](https://www.atom.com/dashboard/seller/api-access).

If you don't have an account yet, visit [atom.com](https://www.atom.com) to get started, or reach out to our support team for assistance.

## Learn More

Visit the [Atom Developer Platform](https://www.atom.com/developer) for a complete overview of platform capabilities, integration guides, and use cases.