MeiGen AI Image Generation MCP

What Is This?

An open-source MCP Server (installed via plugin marketplace) that gives LLMs creative and aesthetic capabilities through 8 tools and carefully designed skills, enabling them to handle complex design tasks. It teaches LLMs how to use various image generation models effectively, delivering professional results through reference images and multi-direction parallel workflows.

• Works with local ComfyUI — no external API dependency; also easily integrates with any custom API

• Built-in 1,500+ curated prompt templates from nanobanana-trending-prompts and fine-tuned prompt engineering techniques that turn requirements into concrete image generation tasks

• Parallel batch generation and sub-agent execution to keep the main context window clean

See It in Action

Product Photo — 4 Directions in Parallel

"Create 4 product display images for this perfume, one of which should feature a model."

Process — AI uploads the reference image, crafts 4 distinct prompts, then generates all 4 in parallel:

Result — 4 creative directions delivered in under 2 minutes:

Generated images:

Quick Start

Claude Code Plugin (Recommended)

# Add the plugin marketplace
/plugin marketplace add jau123/MeiGen-AI-Design-MCP

# Install
/plugin install meigen@meigen-marketplace

Restart Claude Code after installation (close and reopen, or open a new terminal tab).

Alternative marketplace — also available via wshobson/agents (30k+ stars):

/plugin marketplace add wshobson/agents
/plugin install meigen-ai-design@claude-code-workflows

This marketplace doesn't bundle MCP server config. After installing, add to your project's .mcp.json:

{ "mcpServers": { "meigen": { "command": "npx", "args": ["-y", "meigen@1.2.5"] } } }

First-Time Setup

Free features work immediately after restart — try:

"Search for some creative inspiration"

To unlock image generation, run the setup wizard:

/meigen:setup

The wizard walks you through:

1. Choose a provider — local ComfyUI, MeiGen Cloud, or any OpenAI-compatible API (bring your own key & endpoint)

2. Enter credentials — ComfyUI URL, API token, or key

3. Done — restart Claude Code once more, then start generating

Cursor / VS Code / Windsurf / Roo Code

One command to set up MeiGen for any supported AI coding tool:

npx meigen init cursor      # Cursor
npx meigen init vscode      # VS Code / GitHub Copilot
npx meigen init windsurf    # Windsurf
npx meigen init roo         # Roo Code
npx meigen init claude      # Claude Code (project-level)

This writes the correct MCP config file with the right format and path for your tool. If a config file already exists, MeiGen is merged in without overwriting your other servers.

OpenClaw

Install from ClawHub, or use the CLI:

npx clawhub@latest install creative-toolkit

Our skills follow the Agent Skills open standard — copy them into your OpenClaw workspace and they work directly. For MCP tools, use OpenClaw's MCP adapter to connect the MeiGen server.

Other MCP-Compatible Hosts

Add to your MCP config (e.g. .mcp.json, claude_desktop_config.json):

{
  "mcpServers": {
    "meigen": {
      "command": "npx",
      "args": ["-y", "meigen@latest"],
      "env": {
        "MEIGEN_API_TOKEN": "meigen_sk_..."
      }
    }
  }
}

Free features (inspiration search, prompt enhancement, model listing) work without any API key.

MCP Tools

Slash Commands

Smart Agents

MeiGen uses specialized sub-agents for efficient parallel execution:

Output Styles

Switch creative modes with /output-style:

• Creative Director — Art direction mode with visual storytelling, mood boards, and design thinking

• Minimal — Just images and file paths, no commentary. Ideal for batch workflows

Automation Hooks

• Config Check — Validates provider configuration on session start, guides setup if missing

• Auto-Open — Generated images automatically open in Preview (macOS)

MeiGen MCP supports three image generation backends. Configure one or multiple — the system auto-selects the best available.

ComfyUI — Local & Free

Run generation on your own GPU with full control over models, samplers, and workflow parameters. Import any ComfyUI API-format workflow — MeiGen auto-detects KSampler, CLIPTextEncode, EmptyLatentImage, and LoadImage nodes.

{
  "comfyuiUrl": "http://localhost:8188",
  "comfyuiDefaultWorkflow": "txt2img"
}

Perfect for Flux, SDXL, or any model you run locally. Your images never leave your machine.

MeiGen Cloud

Cloud API with multiple models: Nanobanana 2, Seedream 5.0, GPT image 1.5, and more. No GPU required.

Get your API token:

1. Sign in at meigen.ai

2. Click your avatar → Settings → API Keys

3. Create a new key (starts with meigen_sk_)

{ "meigenApiToken": "meigen_sk_..." }

Bring Your Own API (OpenAI-Compatible)

Connect any image generation API that follows the OpenAI format — Together AI, Fireworks AI, DeepInfra, SiliconFlow, or your own endpoint. Just provide your key, base URL, and model name:

{
  "openaiApiKey": "sk-...",
  "openaiBaseUrl": "https://api.together.xyz/v1",
  "openaiModel": "black-forest-labs/FLUX.1-schnell"
}

All three providers support reference images. MeiGen and OpenAI-compatible APIs accept URLs directly; ComfyUI accepts both URLs and local file paths, injecting them into LoadImage nodes in your workflow.

Configuration

Interactive Setup (Recommended)

/meigen:setup

The wizard walks you through provider selection, API key entry, and ComfyUI workflow import. You can also paste a curl command from your API provider's docs — it auto-extracts the key, URL, and model.

Config File

Configuration is stored at ~/.config/meigen/config.json. ComfyUI workflows are stored at ~/.config/meigen/workflows/.

Environment Variables

Environment variables take priority over the config file.

Privacy

MeiGen MCP respects your privacy. Here's what happens with your data:

• ComfyUI (local) — All processing stays on your machine. No data is sent externally.

• MeiGen Cloud — Prompts and reference images are sent to api.meigen.ai for generation. Generated images are stored temporarily on Cloudflare R2. See meigen.ai/privacy.

• OpenAI-compatible — Prompts and reference images are sent to the configured API endpoint. See your provider's privacy policy.

• Reference image upload — Images are compressed locally (max 2MB) and uploaded to Cloudflare R2 via gen.meigen.ai. Uploaded images expire automatically after 24 hours. No authentication required. ComfyUI users can skip uploading entirely by passing local file paths directly.

• Gallery search & prompt enhancement — Run locally against bundled data. No external API calls.

No telemetry, analytics, or tracking of any kind.

Custom Storage Backend

If you prefer to use your own S3/R2 bucket for reference image uploads, set the UPLOAD_GATEWAY_URL environment variable or uploadGatewayUrl in ~/.config/meigen/config.json to point to your own presign endpoint. The endpoint must implement:

POST /upload/presign
Content-Type: application/json

Request:  { "filename": "photo.jpg", "contentType": "image/jpeg", "size": 123456 }
Response: { "success": true, "presignedUrl": "https://...", "publicUrl": "https://..." }

The presignedUrl is used for a PUT upload, and publicUrl is the publicly accessible URL returned to the user.

License

MIT — free for personal and commercial use.