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

# Introduction

> Where to start with the IOTools.cloud docs

Documentation for [IOTools.cloud](https://iotools.cloud) — today that's the API and the MCP server behind **900+ of the site's tools**, callable from your own code or from an AI agent with one key and one credit balance.

<CardGroup cols={2}>
  <Card title="API" icon="rocket" href="/api/overview">
    Call a tool over REST — your first request in about two minutes
  </Card>

  <Card title="MCP" icon="bot" href="/mcp/overview">
    The same tools, callable by Claude, Cursor, Windsurf and other agents
  </Card>

  <Card title="Concepts" icon="book-open" href="/concepts/credits">
    Credits, rate limits and the error format — shared by both surfaces
  </Card>

  <Card title="Examples" icon="code" href="/examples/chaining">
    Worked, copyable code for chaining calls and common patterns
  </Card>
</CardGroup>