MCP Servers Explained in 2 Minutes
MCP gives Claude Code superpowers by connecting it to external tools. Here's the no-jargon explanation.
MCP stands for Model Context Protocol. If that means nothing to you, don't worry. Here's the plain English version.
The Simple Explanation
Claude Code can read files and run terminal commands. That's great, but limited. What if it could also:
- Query your database directly?
- Read your Slack messages for context?
- Check your GitHub issues?
- Search the web for documentation?
That's what MCP servers do. They're plugins that give Claude Code access to external tools and data sources.
How It Works
An MCP server is a small program that runs locally and exposes a specific capability. Claude Code connects to it and can use it like any other tool.
- You install an MCP server (one command)
- You configure it in
.mcp.json - Claude Code automatically discovers and uses it
That's it. No complex setup. No API keys to manage (usually). No infrastructure.
Top 5 MCP Servers to Start With
- GitHub — read issues, PRs, and code search
- Postgres/SQLite — query your database
- Slack — read channel context
- Browser — fetch web pages and documentation
- Filesystem — extended file operations
The Mental Model
Think of Claude Code as a developer and MCP servers as the apps on their computer. The more apps available, the more the developer can do without leaving their desk.
Start with one. Add more as you need them. The full MCP guide has the complete list and setup instructions.
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