MCP Server

Model Context Protocol Server by Markus Michalski - Extend Claude with direct access to external systems like osTicket, Shopware and Wiki.js

MCP Server

Deutsche Version

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What is MCP?

MCP (Model Context Protocol) is an open protocol that gives AI assistants like Claude direct access to external systems — without manual copy-paste or browser switching.

Think of MCP like a USB port for Claude: You plug in an MCP server, and Claude can immediately work with the external system — manage tickets, create products, write wiki pages.

Without MCP

Open browser, log in, manually copy data
Switch back and forth between Claude and the external system
Type or paste information by hand
No automated workflows possible

With MCP

Claude accesses the system directly
Full context available while working
Automated workflows (e.g., create ticket from code issue)
Natural language instead of API calls: "Show me all open tickets"

How Does It Work?

graph LR
    A["You"] --> B["Claude Code"]
    B -->|"stdio"| C["MCP Server"]
    C -->|"REST API"| D["External System"]
    D -->|"JSON"| C
    C -->|"Result"| B
    B -->|"Answer"| A

You tell Claude what you want (natural language)
Claude selects the appropriate MCP tool
The MCP server translates it into an API call
The external system responds
Claude formats the response for you

Available MCP Servers

Server	System	Tools	Description
osTicket MCP	osTicket	12	Ticket management, search, subtickets, smart ID resolution
Shopware Admin MCP	Shopware 6	42	Products, content, SEO, media, mail templates, flows, orders (read-only), cross-selling
Sylius Admin MCP	Sylius 2	55	Products, variants, categories, SEO, countries, zones and shipping methods; separate servers for stage and prod
Wiki.js MCP	Wiki.js	7	Create, update, search, and manage pages

MCP vs. Claude Code Plugins

	MCP Server	Claude Code Plugin
Purpose	Single API integration	Complete workflow
Scope	Several dozen tools for one system	Dozens of skills + MCP server
Example	Manage osTicket tickets	Complete video production
State	Stateless (each call independent)	Stateful (project progress)
Analogy	Like a screwdriver	Like a workshop

MCP servers and plugins complement each other: A plugin can use MCP servers internally. VidCraft, for example, has its own MCP server for state management.

Installation (General)

Step 1: Install server

Git Clone

git clone https://github.com/markus-michalski/{repo-name}.git ~/.claude/mcp-servers/{name}
cd ~/.claude/mcp-servers/{name}
npm install && npm run build

Claude CLI

claude mcp add -s user {name} node ~/.claude/mcp-servers/{name}/dist/index.js

Step 2: Configuration

Each server has a .env file with API URL and credentials.

Step 3: Restart Claude

After installation, restart Claude Code. Verify with /mcp.

Developed by Markus Michalski