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

# Overview

> Connect AI agents and assistants to onchain data through the Zerion API.

Give your AI agents access to wallet portfolios, token data, transactions, and DeFi positions across all supported chains. Zerion provides multiple ways to integrate depending on your setup.

<CardGroup cols={3}>
  <Card title="Zerion CLI" icon="terminal" href="/build-with-ai/zerion-cli">
    Give AI agents access to onchain data via shell commands — no API integration needed.
  </Card>

  <Card title="x402" icon="coins" href="/build-with-ai/x402">
    Let AI agents pay for API access per-request using stablecoins — no API keys needed.
  </Card>

  <Card title="MCP Server" icon="plug" href="/build-with-ai/mcp">
    Connect AI tools like Claude Code, Cursor, and VS Code to the Zerion docs and OpenAPI spec via Model Context Protocol.
  </Card>
</CardGroup>