How to Access 627+ AI Models from Claude Desktop with One MCP Server

#tutorial #api #mcp #ai

If you've been juggling multiple AI API keys — one for OpenAI, another for Anthropic, one for Google — you know the pain. What if your Claude Desktop (or Cursor, or VS Code) could access 627+ models from all major providers through a single MCP server?

That's exactly what I built.

The Problem

Most developers using MCP have separate servers for each AI provider:

OpenAI MCP → GPT-5, DALL-E 3
Anthropic MCP → Claude models
Google MCP → Gemini models

Each requires its own API key, separate billing, different rate limits. It adds up fast.

The Solution: One MCP Server, All Models

Crazyrouter MCP Server connects to Crazyrouter, a unified AI API gateway. One API key gives you:

💬 Chat: GPT-5, Claude Opus 4.6, Gemini 3 Pro, DeepSeek R1, Llama 4, Qwen3, Grok 4
🎨 Images: DALL-E 3, Midjourney, Flux Pro, Stable Diffusion, Imagen 4.0
🎬 Video: Sora 2, Kling V2, Veo 3, Seedance, Pika
🎵 Music: Suno, TTS/STT engines

Quick Setup (3 minutes)

Step 1: Get API Key

Step 2: Install

git clone https://github.com/xujfcn/crazyrouter-mcp.git
cd crazyrouter-mcp
npm install && npm run build

Step 3: Configure Claude Desktop

Edit your Claude Desktop config:

macOS: ~/Library/Application Support/Claude/claude_desktop_config.json
Windows: %APPDATA%\Claude\claude_desktop_config.json

{
  "mcpServers": {
    "crazyrouter": {
      "command": "node",
      "args": ["/path/to/crazyrouter-mcp/dist/index.js"],
      "env": {
        "CRAZYROUTER_API_KEY": "sk-your-key-here"
      }
    }
  }
}

Step 4: Use It

Restart Claude Desktop. Now you can say:

"Use the chat tool to ask GPT-5 to explain quantum computing"

"Generate an image of a sunset over mountains with DALL-E 3"

"List all available video generation models"

Available MCP Tools

Tool	What it does
`chat`	Send messages to any of 627+ AI models
`list_models`	Browse models by category (chat/image/video/audio/music)
`generate_image`	Create images with DALL-E 3, Midjourney, Flux, etc.
`generate_video`	Generate videos with Sora 2, Kling V2, Veo 3, etc.

Real Test Results

I tested each tool against the live API:

✅ chat (gpt-4o-mini) → "Hey there, how's it going?" — 22 tokens, instant
✅ list_models → 539 models confirmed via /v1/models API
✅ generate_image (DALL-E 3) → Generated image URL returned in ~8s
✅ generate_video (kling-v2-1) → API accepted, model queue processing

Also Works With

The same server works with Cursor, VS Code Copilot, Windsurf, and OpenClaw. Just add the same config to their respective MCP settings files.

Why Not Just Use OpenAI's MCP Server?

Feature	OpenAI MCP	Crazyrouter MCP
Models	OpenAI only	627+ from all providers
Image gen	DALL-E only	DALL-E + Midjourney + Flux + SD + Imagen
Video gen	❌	Sora + Kling + Veo + more
Music gen	❌	Suno, TTS
API keys needed	1 per provider	1 total
Pricing	Official rates	Below official rates