> ## Documentation Index
> Fetch the complete documentation index at: https://docs.0mcp.io/llms.txt
> Use this file to discover all available pages before exploring further.

# 0mcp documentation

> Learn how to turn your API into a hosted MCP server.

**Turn your existing API into a hosted MCP server.**

Convert an OpenAPI document, REST API, or Postman collection into a production-ready MCP server. Choose which API operations AI clients can access, then connect it to your favorite MCP-compatible applications.

<CardGroup cols={2}>
  <Card title="Introduction" icon="sparkles" href="/get-started/introduction">
    Learn what [0mcp](https://0mcp.io) is, how it works, and when to use it.
  </Card>

  <Card title="Quick Start" icon="rocket" href="/get-started/quick-start">
    Create, publish, and connect your first MCP server in minutes.
  </Card>

  <Card title="What is MCP?" icon="book-open" href="/learn/fundamentals/what-is-mcp">
    Learn the fundamentals of the MCP, including clients, servers, tools.
  </Card>

  <Card title="How 0mcp works" icon="workflow" href="/concepts/how-0mcp-works">
    Understand how requests flow from an AI client to your API through 0mcp.
  </Card>
</CardGroup>

## From API to MCP

Turn your existing API into a hosted MCP server in four simple steps.

<Steps>
  <Step title="Import">
    Import an OpenAPI 3.x or Swagger 2.0 specification, configure REST endpoints, or import a Postman collection.
  </Step>

  <Step title="Choose">
    Select which API operations should be exposed as MCP tools.
  </Step>

  <Step title="Publish">
    Publish a version of your MCP server to a hosted endpoint.
  </Step>

  <Step title="Connect">
    Connect your MCP server to Claude Code, Cursor, Codex, VS Code, and other compatible clients.
  </Step>
</Steps>

## Popular guides

<CardGroup cols={2}>
  <Card title="Authentication" icon="key-round" href="/concepts/authentication-model">
    Learn how authentication is securely passed through to your API.
  </Card>

  <Card title="Client setup" icon="plug" href="/guides/setup">
    Connect your MCP server to supported AI clients.
  </Card>

  <Card title="MCP 2026-07-28 compatibility" icon="radio" href="/guides/mcp-2026-07-28">
    Understand modern Streamable HTTP behavior and client compatibility.
  </Card>

  <Card title="Versioning" icon="history" href="/guides/versioning">
    Publish updates, manage versions, and roll back when needed.
  </Card>

  <Card title="Logs and privacy" icon="scroll-text" href="/guides/logs">
    Learn what usage data 0mcp stores and what it never stores.
  </Card>
</CardGroup>

## Get help

* Read the [FAQ](/resources/faq).
* [Troubleshoot common MCP connection issues](/troubleshooting/mcp-connection-issues).
* Email **[hello@0mcp.io](mailto:hello@0mcp.io)** if you need assistance.