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

# Introduction

> MCPCore is the fastest way to build, deploy, and manage MCP servers — no infrastructure required.

## What is MCPCore?

**MCPCore** is a managed platform for the [Model Context Protocol (MCP)](https://modelcontextprotocol.io). It lets you write tool logic in JavaScript and get a live, MCP-compliant endpoint in under 30 seconds — no Docker, no servers, no `node_modules`.

You write the code that matters. MCPCore handles everything else:

* **MCP server hosting** — your tools run in an isolated, always-on sandbox
* **AI Tool Builder** — describe what you want in plain language and let AI generate the tool code, parameters, and naming for you
* **Professional code editor** — VS Code-style editor with syntax highlighting, AI-powered completions, and integrated terminal
* **Authentication** — choose from 4 security modes (Public, Unlisted, API Key, OAuth 2.0)
* **Custom domains** — use your own domain with automatic SSL provisioning
* **Encrypted secrets** — store API keys and credentials securely; reference them as `env.MY_KEY`
* **Observability** — real-time traffic logs, error traces with AI-assisted debugging, and analytics dashboards with interactive charts

## How it fits together

The AI model never touches your database or external APIs directly. It calls your MCPCore tool, which runs your sandboxed code and returns a structured result. This separation keeps your infrastructure secure and your integrations composable.

```
AI Client (Claude, Cursor, VS Code, etc.)
      │  MCP protocol
      ▼
MCPCore (hosted MCP server)
      │  your sandboxed code
      ▼
External APIs, Databases, Services
```

## Core concepts

<CardGroup cols={2}>
  <Card title="MCP Servers" icon="server" href="/servers/create">
    A server groups related tools under a single endpoint URL. Create as many servers as you need — one per project, one per team, or one per environment.
  </Card>

  <Card title="Tools" icon="wrench" href="/tools/create">
    A tool is a callable JavaScript function. The AI decides when to call it and what parameters to pass. You decide what it does.
  </Card>

  <Card title="Code Editor" icon="code" href="/tools/editor">
    A professional VS Code-style IDE with AI-powered completions, integrated terminal, and dark theme — right in your browser.
  </Card>

  <Card title="Security Modes" icon="shield" href="/servers/security-overview">
    Every server has an independent security mode — Public, Unlisted, API Key, or OAuth 2.0. Switching modes never requires changing your tool code.
  </Card>

  <Card title="Observability" icon="chart-line" href="/observability/traffic-logs">
    Every request is logged. Inspect call history, error traces, latency trends, and geographic distribution from the dashboard.
  </Card>

  <Card title="Code Examples" icon="book" href="/tools/examples">
    Ready-to-use examples for HTTP requests, database queries, data transformation, and more.
  </Card>
</CardGroup>

## Ready to build?

<CardGroup cols={2}>
  <Card title="Quickstart — 5 minutes" icon="rocket" href="/quickstart">
    Create a server, write a tool, and test it live.
  </Card>

  <Card title="Connect an AI client" icon="plug" href="/connect/overview">
    Add your endpoint to Claude Desktop, Cursor, or VS Code.
  </Card>
</CardGroup>