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Our Model Context Protocol (MCP) server lets any compatible AI model or agent launch Chromium browsers, execute Playwright code, capture video replays, and automate web interactions from Kernel’s cloud platform via a single secure endpoint.

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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
Use the streamable HTTP endpoint where supported for increased reliability. If your client does not support remote MCP, use mcp-remote over stdio. Kernel’s server is a centrally hosted, authenticated remote MCP using OAuth 2.1 with dynamic client registration.

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Connect in your client

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Claude

Our remote MCP server is not compatible with the method Free users of Claude use to add MCP servers.

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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.
On Claude for Work (Team/Enterprise), only Primary Owners or Owners can enable custom connectors for the org. After it’s configured, each user still needs to go to Settings → Connectors and click Connect to authorize it for their account.

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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

Click here to install Kernel on 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"
    }
  }
}
  1. Save. The server will appear in Tools.

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Goose

Click here to install Kernel on Goose in one click.

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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: 
    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"]
    }
  }
}
  1. 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

You can connect directly to https://mcp.onkernel.com/mcp, or use Smithery as a proxy using its provided URL.
  • 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

Many other MCP-capable tools accept:
  • Command: npx
  • Arguments: -y mcp-remote https://mcp.onkernel.com/mcp
{
  "kernel": {
    "command": "npx",
    "args": ["-y", "mcp-remote", "https://mcp.onkernel.com/mcp"]
  }
}
Configure these values wherever the tool expects MCP server settings.

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Tools

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Browser Automation

  • create_browser - Launch a new browser session with options (headless, stealth, persistence, timeout, profile)
  • get_browser - Get browser session information
  • list_browsers - List active browser sessions
  • delete_browser - Terminate a browser session
  • execute_playwright_code - Execute Playwright/TypeScript code in a fresh browser session with automatic video replay and cleanup

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Profile Management

  • setup_profile - Create or update browser profiles with guided setup process
  • list_profiles - List all available browser profiles
  • delete_profile - Delete browser profile permanently

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App Management

  • list_apps - List apps in your Kernel organization with optional filtering
  • invoke_action - Execute actions in Kernel apps
  • get_deployment - Get deployment status and logs
  • list_deployments - List all deployments with optional filtering
  • get_invocation - Get action invocation details
  • search_docs - Search Kernel platform documentation and guides

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Resources

  • profiles:// - Access browser profiles (list all or get specific profile)
  • browsers:// - Access browser sessions (list all or get specific session)
  • apps:// - Access deployed apps (list all or get specific app)

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Prompts

  • kernel-concepts - Get explanations of Kernel’s core concepts (browsers, apps, overview)

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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]

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Execute Playwright code dynamically

Human: Go to example.com and get me the page title
Assistant: I'll execute Playwright code to navigate to the site and retrieve the title.
[Uses execute_playwright_code tool with code: "await page.goto('https://example.com'); return await page.title();"]
Returns: { success: true, result: "Example Domain", replay_url: "https://..." }

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Set up browser profiles for authentication

Human: Set up a profile for my work accounts
Assistant: I'll create a profile and guide you through the setup process.
[Uses setup_profile tool]

Human: I'm done setting up my accounts
Assistant: Perfect! I'll close the browser session and save your profile.
[Uses delete_browser tool to save profile]