MeiGen AI Design MCP

Open-source MCP server for AI image & video generation — native to every major AI coding tool
_{9 leading models (GPT Image 2 · Nanobanana 2 · Seedream 5.0 · Midjourney V8.1 · Flux 2 Klein · Seedance 2.0 · Happyhorse 1.0 · Veo 3.1 · local ComfyUI) · 1,446 curated prompts · parallel sub-agent orchestration · standalone CLI mode. Works in Claude Code, Cursor, Codex, Windsurf, Roo Code, OpenClaw, Hermes Agent, and any MCP-compatible host.}

Quick Start • Demo • Features • Providers • Commands

English | 中文

What Is This?

An MCP server that turns any AI coding tool into a professional design assistant. 8 tools + a curated 1,446-prompt library let it design logos, render product shots, animate stills into video, and orchestrate parallel batch variations. Works in Claude Code, Cursor, Codex, Windsurf, Roo Code, OpenClaw, Hermes Agent, and any MCP-compatible host — with the MeiGen platform, any OpenAI-compatible API, or your local ComfyUI as the backend.

• Three backend modes: MeiGen cloud (9 image and video models), OpenAI-compatible (bring your own key and endpoint), or local ComfyUI (offline, your GPU)
• Built-in 1,446 curated prompt templates from nanobanana-trending-prompts plus style-aware prompt enhancement
• Parallel batch generation via sub-agents to keep the main context clean — plus a standalone CLI for shell scripts and CI

See It in Action

▶ Watch demo on YouTube

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@1.3.2"] } } }

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 the full plugin from ClawHub (includes commands, skills, and MCP server):

openclaw bundles install clawhub:meigen-ai-design

Or install only the skill (no commands/agents):

npx clawhub@latest install creative-toolkit

Use as CLI (no MCP host required)

For shell scripts, CI pipelines, or anyone who wants AI image generation without an MCP host, MeiGen ships a one-shot gen command in the same npm package.

# Set your token once (get it at https://www.meigen.ai → Settings → API Keys)
export MEIGEN_API_TOKEN=meigen_sk_...

# Generate
npx meigen gen --prompt "a calico cat in a sunlit kitchen"

# With a specific model + aspect ratio
npx meigen gen -p "tech logo" -m midjourney-v8.1 -r 1:1

# With a reference image (local file auto-uploaded)
npx meigen gen -p "product hero shot" --ref ~/Desktop/bottle.jpg

# Submit only — print generationId without polling (good for CI)
npx meigen gen -p "..." --no-wait

# Machine-readable output (good for jq pipes)
npx meigen gen -p "..." --json | jq -r '.imageUrls[0]'

The image is saved to ~/Pictures/meigen/ (override with MEIGEN_OUTPUT_DIR).

meigen gen --help lists all flags.

Other MCP-Compatible Hosts

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

{
  "mcpServers": {
    "meigen": {
      "command": "npx",
      "args": ["-y", "meigen@1.3.2"],
      "env": {
        "MEIGEN_API_TOKEN": "meigen_sk_..."
      }
    }
  }
}

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

Hermes Agent (NousResearch)

Hermes Agent is a first-class MCP client — add MeiGen to ~/.hermes/config.yaml:

mcp_servers:
  meigen:
    command: "npx"
    args: ["-y", "meigen@1.3.2"]
    env:
      MEIGEN_API_TOKEN: "meigen_sk_..."
    timeout: 600          # generate_video can take 5–10 min — default 120s is not enough
    connect_timeout: 120  # first npx download can take a minute

The timeout: 600 and connect_timeout: 120 overrides are important — Hermes defaults (120s / 60s) are tuned for short-running tools and will time out on video generation or first-run npx downloads.

Features

MCP Tools

Slash Commands

Standalone CLI Mode

For shell scripts, CI pipelines, and terminal users who don't run an MCP host:

export MEIGEN_API_TOKEN=meigen_sk_...
npx meigen gen --prompt "a calico cat in a sunlit kitchen"
npx meigen gen -p "logo design" -m midjourney-v8.1 -r 1:1 --json

See Use as CLI (no MCP host required) for the full flag list.

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)

Providers

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: GPT Image 2.0, Nanobanana 2, Seedream 5.0, 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_..." }

GPT Image 2.0 resolution & quality — the default model accepts two optional generate_image parameters:

• resolution: e.g. "1K" / "2K" / "4K" — upgrade for posters, prints, wallpapers
• quality: e.g. "low" / "medium" / "high" — use "low" for quick drafts and thumbnails

Each model exposes its own supported resolutions and quality tiers — run list_models to see what's available. For up-to-date pricing across all models, see meigen.ai/model-comparison.

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.