f you’re new to AI coding tools, you might have heard about Claude Code and MCP. Don’t worry — it sounds complicated, but it’s actually pretty simple. Let’s break it down step by step.
What is Claude Code?
Claude Code is an AI code editor. Think of it like a smart assistant that can:
- Help you write code faster
- Fix bugs in your project
- Suggest improvements
- Run commands safely in your project
Claude Code Premier is a premium version that comes with extra features like connecting to external tools and working on multiple projects.
What is MCP?
MCP stands for Model Context Protocol. In simple terms, it is a static configuration file that contains rules for your AI code editor.
- It can be a JSON file (
mcp.json) or a YAML file (mcp.yml) - It contains text instructions, tools, and permissions that the AI must follow
- The AI editor strictly follows this file to generate code, run scripts, or interact with tools
- Important: MCP is not a package, library, or extension — it’s just a file your AI reads
Think of it like composer.json, but instead of managing PHP packages, it defines rules and tools for your AI.
Example MCP File
Here’s a simple example in JSON:
{
"name": "leafphp-webapp",
"tools": [
{
"name": "read_files",
"description": "Read project source files",
"permissions": ["read"]
},
{
"name": "run_tests",
"description": "Run PHPUnit tests",
"permissions": ["execute"]
}
],
"rules": {
"deny": ["delete_files", "drop_database"]
}
}
What it does:
- Tells the AI which tools it can use
- Defines safe permissions (read, execute)
- Denies dangerous actions (delete files, drop database)
This file lives in your project folder or can be on a remote server for shared tools. The AI editor reads it and follows the rules automatically.
Local vs Remote MCP
- Local MCP: Stored in your project folder. AI reads it when you open the project.
- Remote MCP: Hosted on a server. AI connects over the network to access shared tools or databases.
Remote MCP lets the AI safely interact with databases, APIs, scripts, or other services, without giving it your full project code.
Tools and Data in MCP
In MCP, “tools” and “data” are things the AI can interact with safely:
- Tools: Scripts or programs that do something useful
- Example: A script on a remote server that generates fake user data using Faker
- Your local AI editor just calls this tool, and it returns the fake data to your local copy
- The AI doesn’t need Faker installed locally — it just uses the remote tool
- Data: Databases, logs, templates, or APIs that AI can safely access
In short: Tools are like tiny scripts or programs hosted somewhere. The AI calls them, follows the rules in MCP, and gets the result.
Built-in Tools in Claude Code Premier
Claude Code Premier comes with many built-in tools/scripts that help developers right away. Examples:
- File operations — read, write, and edit project files
- Run tests — execute PHPUnit, Python, or other test scripts
- Run shell commands — safely run commands in a sandbox
- Fake data generation — like a Faker-based script for generating dummy users
- Code formatting / linting — automatically fix code style issues
- Web search integration — fetch information from the web
These tools let AI automate tasks safely without giving it full access to your project.
In Simple Words
- Claude Code = your smart coding assistant
- MCP = a static JSON/YAML file that tells AI what it can do
- Local MCP = rules stored in your project
- Remote MCP = rules stored on a server to safely share tools/data
- Tools/data = scripts, APIs, databases, or other actions AI can use safely
- Important: MCP is not a package or extension, just a file the AI reads and strictly follows
Example: You can call a remote Faker script to generate fake users without installing Faker locally. The AI editor follows the MCP rules and safely brings the data into your local project.
✅ Using Claude Code with MCP is like giving your AI a safe workspace: it helps you code faster, automate repetitive tasks, and interact with remote tools, all while keeping your project safe.