multimodal-mcp

Multi-provider media generation MCP server. Generate images, videos, audio, and transcriptions from text prompts using OpenAI, xAI, Gemini, ElevenLabs, and BFL (FLUX) through a single unified interface.

Features

• 🎨 Image Generation — Generate images via OpenAI (gpt-image-1), xAI (grok-imagine-image), Gemini (imagen-4), or BFL (FLUX Pro 1.1)
• ✏️ Image Editing — Edit images via OpenAI, xAI, Gemini, or BFL (FLUX Kontext)
• 🎬 Video Generation — Generate videos via OpenAI (sora-2), xAI (grok-imagine-video), or Gemini (veo-3.1)
• 🔊 Audio Generation — Text-to-speech via OpenAI (tts-1), Gemini, or ElevenLabs (Flash v2.5). Sound effects via ElevenLabs
• 🎙️ Audio Transcription — Speech-to-text via OpenAI (Whisper) or ElevenLabs (Scribe)
• 🔄 Auto-Discovery — Automatically detects configured providers from environment variables
• 🎯 Provider Selection — Auto-selects or explicitly choose a provider per request
• 📁 File Output — Saves all generated media to disk with descriptive filenames

Quick Start

Set the API key for at least one provider. Most users only need one — add more to access additional providers.

# Using OpenAI
claude mcp add multimodal-mcp -e OPENAI_API_KEY=sk-... -- npx -y @r16t/multimodal-mcp@latest

# Or using xAI
# claude mcp add multimodal-mcp -e XAI_API_KEY=xai-... -- npx -y @r16t/multimodal-mcp@latest

# Or using Gemini
# claude mcp add multimodal-mcp -e GEMINI_API_KEY=AIza... -- npx -y @r16t/multimodal-mcp@latest

# Or using ElevenLabs (audio + transcription)
# claude mcp add multimodal-mcp -e ELEVENLABS_API_KEY=xi-... -- npx -y @r16t/multimodal-mcp@latest

# Or using BFL/FLUX (images)
# claude mcp add multimodal-mcp -e BFL_API_KEY=... -- npx -y @r16t/multimodal-mcp@latest

Using a different editor? See setup instructions for Claude Desktop, Cursor, VS Code, Windsurf, and Cline.

Environment Variables

Variable	Required	Description
OPENAI_API_KEY	At least one provider key	OpenAI API key — enables image, video, audio generation, and transcription via gpt-image-1, sora-2, tts-1, and whisper-1
XAI_API_KEY	At least one provider key	xAI API key — enables image and video generation via grok-imagine-image and grok-imagine-video
GEMINI_API_KEY	At least one provider key	Gemini API key — enables image, video, and audio generation via imagen-4, veo-3.1, and gemini-2.5-flash-preview-tts
GOOGLE_API_KEY	—	Alias for GEMINI_API_KEY; either name is accepted
ELEVENLABS_API_KEY	At least one provider key	ElevenLabs API key — enables audio generation (TTS, sound effects) and transcription via Flash v2.5 and Scribe v1
BFL_API_KEY	At least one provider key	BFL API key — enables image generation and editing via FLUX Pro 1.1 and FLUX Kontext
MEDIA_OUTPUT_DIR	No	Directory for saved media files. Defaults to the current working directory

Available Tools

generate_image

Generate an image from a text prompt.

Parameter	Type	Required	Description
prompt	string	Yes	Text description of the image to generate
provider	string	No	Provider to use: openai, xai, google, bfl. Auto-selects if omitted
aspectRatio	string	No	Aspect ratio: 1:1, 16:9, 9:16, 4:3, 3:4
quality	string	No	Quality level: low, standard, high
outputDirectory	string	No	Directory to save the generated file. Absolute or relative path. Defaults to MEDIA_OUTPUT_DIR or cwd
providerOptions	object	No	Provider-specific parameters passed through directly

generate_video

Generate a video from a text prompt. Video generation is asynchronous and may take several minutes.

Parameter	Type	Required	Description
prompt	string	Yes	Text description of the video to generate
provider	string	No	Provider to use: openai, xai, google. Auto-selects if omitted
duration	number	No	Video duration in seconds (provider limits apply)
aspectRatio	string	No	Aspect ratio: 16:9, 9:16, 1:1
resolution	string	No	Resolution: 480p, 720p, 1080p
outputDirectory	string	No	Directory to save the generated file. Absolute or relative path. Defaults to MEDIA_OUTPUT_DIR or cwd
providerOptions	object	No	Provider-specific parameters passed through directly

generate_audio

Generate audio from text. Supports text-to-speech and sound effects. Audio generation is synchronous.

Parameter	Type	Required	Description
text	string	Yes	Text to convert to speech, or a description of the sound effect to generate
provider	string	No	Provider to use: openai, google, elevenlabs. Auto-selects if omitted
voice	string	No	Voice name (provider-specific). OpenAI: alloy, ash, coral, echo, fable, nova, onyx, sage, shimmer. Google: Kore, Charon, Fenrir, Aoede, Puck, etc. ElevenLabs: voice ID
speed	number	No	Speech speed multiplier (OpenAI only): 0.25 to 4.0
format	string	No	Output format (OpenAI only): mp3, opus, aac, flac, wav, pcm
outputDirectory	string	No	Directory to save the generated file. Absolute or relative path. Defaults to MEDIA_OUTPUT_DIR or cwd
providerOptions	object	No	Provider-specific parameters passed through directly. ElevenLabs: set mode: "sound-effect" for sound effects, model for TTS model selection

transcribe_audio

Transcribe audio to text (speech-to-text).

Parameter	Type	Required	Description
audioPath	string	Yes	Absolute path to the audio file to transcribe
provider	string	No	Provider to use: openai, elevenlabs. Auto-selects if omitted
language	string	No	Language code (e.g., en, fr, es) to hint the transcription language
providerOptions	object	No	Provider-specific parameters passed through directly

list_providers

List all configured media generation providers and their capabilities. Takes no parameters.

Provider Capabilities

Provider	Image	Image Editing	Video	Audio	Transcription	Key Models
OpenAI	✅	✅	✅	✅	✅	gpt-image-1, sora-2, tts-1, whisper-1
xAI	✅	✅	✅	—	—	grok-imagine-image, grok-imagine-video
Gemini	✅	✅	✅	✅	—	imagen-4, veo-3.1, gemini-2.5-flash-preview-tts
ElevenLabs	—	—	—	✅	✅	eleven_flash_v2_5, scribe_v1
BFL	✅	✅	—	—	—	flux-pro-1.1, flux-kontext-pro

Image Aspect Ratios

Provider	1:1	16:9	9:16	4:3	3:4
OpenAI	✅	✅	✅	✅	✅
xAI	✅	✅	✅	✅	✅
Gemini	✅	✅	✅	✅	✅
BFL	✅	✅	✅	✅	✅

Video Aspect Ratios & Resolutions

Provider	16:9	9:16	1:1	480p	720p	1080p
OpenAI	✅	✅	✅	✅	✅	✅
xAI	✅	✅	✅	—	✅	✅
Gemini	✅	✅	—	—	✅	✅

Audio Formats

Provider	mp3	opus	aac	flac	wav	pcm
OpenAI	✅	✅	✅	✅	✅	✅
Gemini	—	—	—	—	✅	—
ElevenLabs	✅	✅	—	—	—	✅

Troubleshooting

No providers configured

[config] No provider API keys detected

Set at least one of OPENAI_API_KEY, XAI_API_KEY, GEMINI_API_KEY, ELEVENLABS_API_KEY, or BFL_API_KEY in the MCP server's env block.

Provider not available for requested media type

Each provider supports different media types (see Provider Capabilities). If you specify a provider that isn't configured (no API key) or doesn't support the requested media type, you'll receive an error. Omit the provider parameter to auto-select from configured providers.

Video generation timeout

Video generation polls for up to 10 minutes. If your video hasn't completed in that window, the request will fail with a timeout error. Try a shorter duration or a simpler prompt.

xAI image generation returned no data

This indicates the xAI API returned an empty response. Check that your XAI_API_KEY is valid and that your prompt does not violate xAI content policies.

Gemini image/video generation failed: 403

Verify your GEMINI_API_KEY has the Generative Language API enabled in Google Cloud Console.

Development

npm run build      # Compile TypeScript to build/
npm test           # Run tests with Vitest
npm run lint       # Lint and auto-fix with ESLint
npm run typecheck  # Type-check without emitting
npm run dev        # Watch mode for TypeScript compilation

Editor Setup

Replace OPENAI_API_KEY with your provider of choice (XAI_API_KEY, GEMINI_API_KEY, ELEVENLABS_API_KEY, BFL_API_KEY). You can set multiple keys to enable multiple providers.

Claude Desktop

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

{
  "mcpServers": {
    "multimodal-mcp": {
      "command": "npx",
      "args": ["@r16t/multimodal-mcp@latest"],
      "env": {
        "OPENAI_API_KEY": "sk-..."
      }
    }
  }
}

Cursor

Add to .cursor/mcp.json in your project root (or ~/.cursor/mcp.json globally):

{
  "mcpServers": {
    "multimodal-mcp": {
      "command": "npx",
      "args": ["@r16t/multimodal-mcp@latest"],
      "env": {
        "OPENAI_API_KEY": "sk-..."
      }
    }
  }
}

VS Code (GitHub Copilot)

Add to .vscode/mcp.json in your project root:

{
  "servers": {
    "multimodal-mcp": {
      "command": "npx",
      "args": ["@r16t/multimodal-mcp@latest"],
      "env": {
        "OPENAI_API_KEY": "sk-..."
      }
    }
  }
}

Windsurf

Add to ~/.codeium/windsurf/mcp_config.json:

{
  "mcpServers": {
    "multimodal-mcp": {
      "command": "npx",
      "args": ["@r16t/multimodal-mcp@latest"],
      "env": {
        "OPENAI_API_KEY": "sk-..."
      }
    }
  }
}

Cline

Add to ~/Library/Application Support/Code/User/globalStorage/saoudrizwan.claude-dev/settings/cline_mcp_settings.json:

{
  "mcpServers": {
    "multimodal-mcp": {
      "command": "npx",
      "args": ["@r16t/multimodal-mcp@latest"],
      "env": {
        "OPENAI_API_KEY": "sk-..."
      }
    }
  }
}

License

MIT