mcp-fal

An MCP (Model Context Protocol) server that exposes Fal.ai generative media models as tools callable by Claude and other MCP-compatible clients.

Features

Related MCP server: @monsoft/mcp-fal-ai

Installation

# Clone the repository
git clone https://github.com/mohsenmousavieyeline/mcp-fal.git
cd mcp-fal

# Install dependencies
npm install

# Build (compiles TypeScript → dist/)
npm run build

API Key

Get your Fal.ai API key at https://fal.ai/dashboard/keys.

The server resolves the API key in this priority order:

1. CLI argument — --api-key <your-key>

2. Environment variable — FAL_KEY=<your-key>

Configuration

Claude Desktop

Add the server to your Claude Desktop config file:

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

Option A — API key as CLI argument (recommended):

{
  "mcpServers": {
    "fal-ai": {
      "command": "node",
      "args": [
        "/absolute/path/to/mcp-fal/dist/index.js",
        "--api-key",
        "fal_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
      ]
    }
  }
}

Option B — API key as environment variable:

{
  "mcpServers": {
    "fal-ai": {
      "command": "node",
      "args": ["/absolute/path/to/mcp-fal/dist/index.js"],
      "env": {
        "FAL_KEY": "fal_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
      }
    }
  }
}

Claude Code (CLI)

claude mcp add fal-ai -- node /absolute/path/to/mcp-fal/dist/index.js --api-key fal_xxxx

Or with an environment variable:

FAL_KEY=fal_xxxx claude mcp add fal-ai -- node /absolute/path/to/mcp-fal/dist/index.js

npx (no installation)

If published to npm:

{
  "mcpServers": {
    "fal-ai": {
      "command": "npx",
      "args": ["mcp-fal", "--api-key", "fal_xxxx"]
    }
  }
}

Tool Reference

generate_image

Generate one or more images from a text prompt.

Example prompt to Claude:

"Generate an image of a misty mountain landscape at dawn using FLUX schnell"

generate_video

Generate a video from text or an input image.

Default models:

• With image_url: fal-ai/minimax-video/image-to-video

• Without image_url: fal-ai/minimax-video/text-to-video

⚠️ Video generation typically takes 1–5 minutes.

Example prompt to Claude:

"Generate a 5-second video of ocean waves crashing on a rocky shore"

run_model

Run any Fal.ai model with custom parameters.

Browse available models at https://fal.ai/models.

Example prompt to Claude:

"Use the run_model tool with fal-ai/imageutils/rembg to remove the background from this image: https://example.com/photo.jpg"

Development

# Run in development mode (no build step required)
FAL_KEY=your_key npm run dev

# Build for production
npm run build

# Run the built server
FAL_KEY=your_key npm start

Popular Fal.ai Models

License

MIT