sync. labs MCP Server — Use sync. labs from Claude, ChatGPT & AI Assistants via MCP

1. Go to claude.ai → Settings → Integrations
2. Click Add custom connector
3. Enter Name: Sync Labs and URL: https://mcp.sync.so/mcp
4. Click Add, then Connect
5. Log in with your Sync Labs account when prompted

Sync Labs tools will appear in Claude’s tool picker. Try asking: “Create a lipsync video with this video and audio URL.”

1. Go to chatgpt.com → Settings → Apps → New App
2. Enter Name: Sync Labs, Description: Lipsync videos from any video + audio
3. Set MCP Server URL: https://mcp.sync.so/mcp
4. Set Authentication: OAuth
5. Click Create, then Connect when prompted in chat
6. Log in with your Sync Labs account when prompted

Add the following to your claude_desktop_config.json:

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{
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  "mcpServers": {
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    "sync": {
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      "command": "npx",
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      "args": ["-y", "@sync.so/mcp-server"],
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      "env": {
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        "SYNC_API_KEY": "your-api-key"
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      }
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    }
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  }
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}

Where to find this file:

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

Restart Claude Desktop after saving.

Add the following to your ChatGPT Desktop MCP config:

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{
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  "mcpServers": {
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    "sync": {
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      "command": "npx",
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      "args": ["-y", "@sync.so/mcp-server"],
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      "env": {
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        "SYNC_API_KEY": "your-api-key"
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      }
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    }
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  }
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}

Where to find this file:

• macOS: ~/Library/Application Support/com.openai.chat/mcp.json
• Windows: %APPDATA%\com.openai.chat\mcp.json

Restart ChatGPT Desktop after saving.

Run this one-liner to add Sync Labs to Claude Code:

$
claude mcp add sync -- npx -y @sync.so/mcp-server --api-key YOUR_API_KEY

Or add to .mcp.json in your project root:

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{
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  "mcpServers": {
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    "sync": {
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      "command": "npx",
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      "args": ["-y", "@sync.so/mcp-server"],
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      "env": {
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        "SYNC_API_KEY": "your-api-key"
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      }
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    }
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  }
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}

Add to .cursor/mcp.json in your project:

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{
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  "mcpServers": {
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    "sync": {
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      "command": "npx",
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      "args": ["-y", "@sync.so/mcp-server"],
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      "env": {
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        "SYNC_API_KEY": "your-api-key"
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      }
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    }
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  }
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}

Any MCP-compatible client can use the Sync Labs MCP server. The configuration is the same — point it at npx -y @sync.so/mcp-server with your API key set as SYNC_API_KEY in the environment.

See the MCP protocol docs for client-specific setup instructions.

• Make sure you have Node.js 18+ installed
• Verify your API key is valid at sync.so/settings/api-keys
• Restart your AI client after updating the configuration
• Check the terminal/logs for error messages

• Double-check your API key is correct and has not been revoked
• For web clients, try disconnecting and reconnecting the integration to re-authenticate via OAuth
• Ensure your Sync Labs account is active with a valid payment method

If you see sh: mcp-server: command not found or similar errors when using the npx configuration, this is typically caused by Node version managers (nvm, fnm, volta) not resolving npx bin paths correctly.

Fix: Install the package globally and reference it directly:

$
npm install -g @sync.so/mcp-server

Then update your MCP config to use sync-mcp instead of npx:

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{
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  "mcpServers": {
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    "sync": {
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      "command": "sync-mcp",
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      "args": [],
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      "env": {
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        "SYNC_API_KEY": "your-api-key"
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      }
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    }
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  }
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}

If that still doesn’t work, use the full path to node:

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{
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  "mcpServers": {
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    "sync": {
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      "command": "node",
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      "args": ["node_modules/@sync.so/mcp-server/dist/cli.js"],
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      "env": {
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        "SYNC_API_KEY": "your-api-key"
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      }
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    }
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  }
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}

No. The Sync Labs MCP server runs via npx, which downloads the package automatically. Node.js 18+ is the only prerequisite. You can also install it globally with npm install -g @sync.so/mcp-server if you prefer.

Yes. The Sync Labs MCP server fetches the latest OpenAPI spec from the Sync Labs API on every startup. When new endpoints are added to the Sync Labs API, they become available as MCP tools automatically — just restart the server.

Yes — if you’re using a web client (Claude Web or ChatGPT Web), authentication is handled via OAuth and no API key is needed. For local clients (desktop apps, CLI tools, and code editors), a Sync Labs API key is required.

The Sync Labs MCP server supports 9 AI clients: Claude Web, ChatGPT Web, Claude Desktop, ChatGPT Desktop, Claude Code, Cursor, Windsurf, Codex CLI, and any MCP-compatible client. See the supported clients table for details.

Asset uploads are not yet available through the Sync Labs API, so they are not available through the Sync Labs MCP server either. Use publicly accessible URLs for your video and audio inputs. Once uploads are added to the Sync Labs API, they will automatically become available through the Sync Labs MCP server.