MCP Server

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Setup Instructions

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General (Transports)

• Streamable HTTP (recommended): https://mcp.onkernel.com/mcp
• stdio via mcp-remote (for clients without remote MCP support): npx -y mcp-remote https://mcp.onkernel.com/mcp

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Connect in your client

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Claude

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Pro, Max, Team & Enterprise (Claude.ai and Claude Desktop)

1. Go to Settings → Connectors → Add custom connector.
2. Enter: Integration name: Kernel, Integration URL: https://mcp.onkernel.com/mcp, then click Add.
3. In Settings → Connectors, click Connect next to Kernel to launch OAuth and approve.
4. In chat, click Search and tools and enable the Kernel tools if needed.

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Claude Code CLI

claude mcp add --transport http kernel https://mcp.onkernel.com/mcp
# Then in the REPL run once to authenticate:
/mcp

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Cursor

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Manual setup

1. Press ⌘/Ctrl Shift J.
2. Go to MCP & Integrations → New MCP server.
3. Add this configuration:

{
  "mcpServers": {
    "kernel": {
      "url": "https://mcp.onkernel.com/mcp"
    }
  }
}

4. Save. The server will appear in Tools.

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Goose

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Goose Desktop

1. Click Extensions in the sidebar of the Goose Desktop.
2. Click Add custom extension.
3. On the Add custom extension modal, enter:
   • Extension Name: Kernel
   • Type: STDIO
   • Description: Access Kernel's cloud-based browsers via MCP
   • Command: npx -y mcp-remote https://mcp.onkernel.com/mcp
   • Timeout: 300
4. Click Save Changes button.

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Goose CLI

1. Run the following command:
   Copy

   Ask AI

   goose configure
   

2. Select Add Extension from the menu.
3. Choose Command-line Extension.
4. Follow the prompts:
   • Extension name: Kernel
   • Command: npx -y mcp-remote https://mcp.onkernel.com/mcp
   • Timeout: 300
   • Description: Access Kernel's cloud-based browsers via MCP

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Visual Studio Code

{
  "mcpServers": {
    "kernel": {
      "url": "https://mcp.onkernel.com/mcp",
      "type": "http"
    }
  }
}

1. Press ⌘/Ctrl Shift P → search MCP: Add Server.
2. Select HTTP (HTTP or Server-Sent Events).
3. Enter: https://mcp.onkernel.com/mcp
4. Name the server Kernel → Enter.

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Windsurf

1. Press ⌘/Ctrl , to open settings.
2. Navigate Cascade → MCP servers → View raw config.
3. Paste:

{
  "mcpServers": {
    "kernel": {
      "command": "npx",
      "args": ["-y", "mcp-remote", "https://mcp.onkernel.com/mcp"]
    }
  }
}

4. On Manage MCPs, click Refresh to load Kernel MCP.

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Zed

1. Press ⌘/Ctrl , to open settings.
2. Paste:

{
  "context_servers": {
    "kernel": {
      "source": "custom",
      "command": "npx",
      "args": ["-y", "mcp-remote", "https://mcp.onkernel.com/mcp"]
    }
  }
}

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Smithery

• Use Smithery URL in any MCP client:
  1. Open Smithery: Kernel.
  2. Copy the URL from “Get connection URL”.
  3. Paste it into your MCP client’s “Add server” flow.
• Use Kernel in Smithery’s Playground MCP client:
  1. Open Smithery Playground.
  2. Click “Add servers”, search for “Kernel”, and add it.
  3. Sign in and authorize Kernel when prompted.

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Others

• Command: npx
• Arguments: -y mcp-remote https://mcp.onkernel.com/mcp

{
  "kernel": {
    "command": "npx",
    "args": ["-y", "mcp-remote", "https://mcp.onkernel.com/mcp"]
  }
}

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Tools

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Browser Automation

• create_browser - Launch a new browser session
• get_browser - Get browser session information
• list_browsers - List active browser sessions
• delete_browser - Terminate a browser session

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App Management

• list_apps - List apps in your Kernel organization
• invoke_action - Execute actions in Kernel apps
• get_deployment - Get deployment status and logs
• list_deployments - List all deployments
• get_invocation - Get action invocation details

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Documentation & Search

• search_docs - Search Kernel platform documentation and guides

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Troubleshooting

• Cursor clean reset: ⌘/Ctrl Shift P → run Cursor: Clear All MCP Tokens (resets all MCP servers and auth; re-enable Kernel and re-authenticate).
• Clear saved auth and retry: rm -rf ~/.mcp-auth
• Ensure a recent Node.js version when using npx mcp-remote
• If behind strict networks, try stdio via mcp-remote, or explicitly set the transport your client supports

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Examples

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Invoke apps from anywhere

Human: Run my web-scraper app to get data from reddit.com
Assistant: I'll execute your web-scraper action with reddit.com as the target.
[Uses invoke_action tool to run your deployed app in the cloud]

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Create persistent browser sessions

Human: Create a stealth browser session that I can reuse for testing login flows
Assistant: I'll create a persistent, stealth-enabled browser that maintains state between uses.
[Uses create_browser tool with persistence and stealth options]