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

# Add bitcoin payments to your app with Bark

Bark provides everything you need to build fast, low-cost, self-custodial bitcoin payments into your app. Supports Ark, Lightning, and on-chain. Based on the Ark protocol.

## Get started

<CardGroup cols={1}>
  <Card title="Quickstart guide" icon="terminal" href="/getting-started/bark-cli">
    Make your first Ark payments on signet in minutes with the bark CLI.
  </Card>
</CardGroup>

<CardGroup cols={2}>
  <Card title="Build a wallet app" icon="mobile" href="/bark-sdk">
    For mobile and desktop apps where users hold their own keys.
  </Card>

  <Card title="Integrate with your server" icon="server" href="/barkd">
    For exchanges, e-commerce, and services where you manage bitcoin.
  </Card>
</CardGroup>

## Learn more

<CardGroup cols={2}>
  <Card title="How Ark works" icon="graduation-cap" href="/learn/intro">
    Deep dive into the mechanics of the Ark protocol.
  </Card>

  <Card title="Latest updates" icon="megaphone" href="/changelog/index">
    Keep up with the latest features in our changelog.
  </Card>

  <Card title="Run an Ark server" icon="server" href="/ark-server">
    Set up your own Ark server for testing and development.
  </Card>
</CardGroup>