LetzAI MCP

What it does

LetzAI MCP connects Claude to the LetzAI image generation platform, letting AI assistants create and upscale images on demand. You describe what you want, and Claude calls LetzAI's API to produce the result — opening the finished image in your browser automatically.

LetzAI supports user-trained models (referenced by @handle), so you can generate images in specific styles or likenesses that aren't possible with generic diffusion services.

Tools

• create_image — Generate an image from a text prompt, optionally referencing a LetzAI model (e.g. @mischstrotz). Returns the image URL and opens it in the browser.
• upscale_image — Upscale an existing LetzAI image by URL or image ID, with a configurable strength parameter (0–2).

Installation

Requires Node.js and a LetzAI API key from letz.ai/docs/api.

git clone https://github.com/Letz-AI/letzai-mcp
cd letzai-mcp
npm install
npx tsc

Claude Desktop (claude_desktop_config.json):

{
  "mcpServers": {
    "letzai": {
      "command": "node",
      "args": ["/ABSOLUTE/PATH/TO/letzai-mcp/build/index.js"],
      "env": {
        "LETZAI_API_KEY": "<your-api-key>"
      }
    }
  }
}

Restart Claude Desktop after editing the config.

Supported hosts

Confirmed: Claude Desktop.