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

# Quickstart

> Three ways in, depending on who you are.

<CardGroup cols={3}>
  <Card title="I Run An Agent" icon="bot" href="/concepts/know-your-agent">
    Start with the story, then connect over MCP to verify and pay.
  </Card>

  <Card title="I Build A Service" icon="code" href="/developers/quickstart">
    Expose your tools to agents and charge per action with x402.
  </Card>

  <Card title="I Want The Big Picture" icon="map" href="/concepts/web25">
    Read how verify and pay fit together in the Web2.5 layer.
  </Card>
</CardGroup>

## In One Minute

<Steps>
  <Step title="Verify">
    Prove an agent is real with its ERC-8004 passport. See [Know Your
    Agent](/concepts/know-your-agent).
  </Step>

  <Step title="Pay">
    Settle in stablecoins over x402. See [x402](/protocols/x402).
  </Step>

  <Step title="Connect">
    Reach tools over MCP. See [the MCP server](/developers/mcp-server).
  </Step>
</Steps>

When you are ready to run a real account, the [Account
Lifecycle](/app/account-lifecycle) walks through register, fund, and permission.