🎨 pruna-mcp-server

MCP server for Pruna AI — ultra-fast image generation, editing, upscaling, and video generation directly from your AI assistant.

Pruna AI is an inference API specialized in image and video generation. It offers sub-2-second image generation starting at $0.005/image, with models for text-to-image, image editing, upscaling, and video generation. This MCP server wraps their API so any MCP-compatible client (Claude Desktop, Kiro, Cursor) can generate visual content natively.

Conforms to MCP Specification 2025-11-25.

Features

• 6 MCP Tools: generate_image, edit_image, upscale_image, generate_video, list_models, upload_file
• 7 MCP Prompts: Product photos, virtual staging, social media visuals, game concept art, ad creatives, video ads, image enhancement
• 2 MCP Resources: pruna://models catalog for model discovery without tool calls
• 18 models: 10 text-to-image, 3 editing, 1 upscale, 4 video
• Smart sync/async: Sync for fast image models, async with polling for video
• Transparent file handling: Pass local paths or URLs — auto-upload handled
• Native MCP image return: ImageContent blocks for clients that support inline display
• Full MCP compliance: Tool annotations, structured content, progress notifications

Quick Start

# With uvx (zero install)
uvx pruna-mcp-server

# Or with pip
pip install pruna-mcp-server
pruna-mcp

Set your API key — get one at pruna.ai (go to the developer portal or contact Pruna to request access):

# macOS Keychain (recommended)
security add-generic-password -a $USER -s PRUNA_API_KEY -w "your-api-key"

# Or environment variable
export PRUNA_API_KEY="your-api-key"

MCP Client Configuration

Kiro CLI

Add to your agent config (e.g. ~/.kiro/agents/default.json):

In mcpServers:

"pruna": {
  "command": "sh",
  "args": ["-c", "PRUNA_API_KEY=$(security find-generic-password -a $USER -s PRUNA_API_KEY -w) uv run --directory /path/to/pruna-mcp-server pruna-mcp"],
  "autoApprove": ["generate_image", "edit_image", "upscale_image", "generate_video", "list_models", "upload_file"]
}

In tools, add: "@pruna/*"

In allowedTools, add: "generate_image", "edit_image", "upscale_image", "generate_video", "list_models", "upload_file"

Note: Kiro agents use a tools whitelist with @server-name/* syntax and an allowedTools list. Both must include the Pruna tools for them to be available.

Claude Desktop

Add to ~/Library/Application Support/Claude/claude_desktop_config.json (macOS):

{
  "mcpServers": {
    "pruna": {
      "command": "sh",
      "args": ["-c", "PRUNA_API_KEY=$(security find-generic-password -a $USER -s PRUNA_API_KEY -w) /path/to/uv run --directory /path/to/pruna-mcp-server pruna-mcp"]
    }
  }
}

Important: Use the full path to uv (e.g. /Users/you/.local/bin/uv) — Claude Desktop launches processes with a minimal PATH that doesn't include ~/.local/bin.

Note: Claude Desktop does not render ImageContent inline in the chat. The image is generated and saved locally — Claude will reference the file path in its response.

Cursor

Add to .cursor/mcp.json:

{
  "mcpServers": {
    "pruna": {
      "command": "uvx",
      "args": ["pruna-mcp-server"],
      "env": { "PRUNA_API_KEY": "your-api-key" }
    }
  }
}

Tools

| Tool | Description | Pricing | |------|-------------|---------| | generate_image | Text-to-image with 10 models | From $0.0001/image | | edit_image | Edit 1-5 images with text instructions | From $0.010/image | | upscale_image | AI upscaling to 1-8 megapixels | From $0.005/image | | generate_video | Text/image/audio to video | From $0.005/s | | list_models | Browse all available models with pricing | Free | | upload_file | Upload files for editing/video workflows | Free |

Image tools return both a JSON metadata block and a native MCP ImageContent block (base64, for images < 5MB).

Prompts

Built-in workflow templates for common use cases:

| Prompt | Use Case | Example | |--------|----------|---------| | product-photo | E-commerce product shots | "white leather sneakers on clean background" | | virtual-staging | Real estate room staging | Stage empty rooms with furniture | | social-media-visual | Platform-optimized visuals | Auto aspect ratio per platform | | game-concept-art | Game assets & environments | Characters, weapons, landscapes | | ad-creative | Digital ads with text overlay | Headlines rendered in the image | | video-ad | Short video ads | Talking heads, product demos | | image-enhance | Upscale + enhance workflow | AI-generated image refinement |

Configuration

| Environment Variable | Required | Default | Description | |---------------------|----------|---------|-------------| | PRUNA_API_KEY | ✅ | — | Your Pruna AI API key | | PRUNA_OUTPUT_DIR | — | ./pruna-output | Directory for downloaded files | | PRUNA_POLL_INTERVAL | — | 2 | Seconds between async polls | | PRUNA_TIMEOUT | — | 120 | HTTP timeout in seconds | | PRUNA_MAX_RETRIES | — | 3 | Max retries on transient errors |

Client Compatibility

| Client | Transport | Status | Notes | |--------|-----------|--------|-------| | Kiro CLI | STDIO | ✅ Tested | Requires tools + allowedTools config | | Claude Desktop | STDIO | ✅ Tested | Use full path to uv; no inline image display | | Cursor | STDIO | 🔲 Planned | — | | Claude Code | STDIO | 🔲 Planned | — |

Development

git clone https://github.com/charlesrapp/pruna-mcp-server.git
cd pruna-mcp-server
uv sync --extra dev

# Run tests (100 tests, 94% coverage)
uv run pytest --cov

# Lint & type check
uv run ruff check src/ tests/
uv run mypy src/

See CONTRIBUTING.md for guidelines.

License

MIT — see LICENSE.