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What is MCPCore?

MCPCore is a managed platform for the Model Context Protocol (MCP). 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

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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

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Core concepts

MCP Servers

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.

Tools

A tool is a callable JavaScript function. The AI decides when to call it and what parameters to pass. You decide what it does.

Code Editor

A professional VS Code-style IDE with AI-powered completions, integrated terminal, and dark theme — right in your browser.

Security Modes

Every server has an independent security mode — Public, Unlisted, API Key, or OAuth 2.0. Switching modes never requires changing your tool code.

Observability

Every request is logged. Inspect call history, error traces, latency trends, and geographic distribution from the dashboard.

Code Examples

Ready-to-use examples for HTTP requests, database queries, data transformation, and more.

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Ready to build?

Quickstart — 5 minutes

Create a server, write a tool, and test it live.

Connect an AI client

Add your endpoint to Claude Desktop, Cursor, or VS Code.