CloakBrowser MCP

Install With npm

npx -y cloakbrowser-mcp@latest

Requires Node.js 22.13+ in the 22.x line, or Node.js 24+. Run diagnostics before wiring a client:

npx -y cloakbrowser-mcp@latest doctor

For Streamable HTTP instead of stdio:

npx -y cloakbrowser-mcp@latest --transport streamable-http --http-port 3000

See the generated CLI Reference for all flags.

Install With Docker

docker run --rm --init -i \
  -v "$PWD/artifacts:/data" \
  swimmwatch/cloakbrowser-mcp:latest

For Streamable HTTP:

docker run --rm --init -p 127.0.0.1:3000:3000 \
  -v "$PWD/artifacts:/data" \
  swimmwatch/cloakbrowser-mcp:latest \
  --transport streamable-http --http-host 0.0.0.0 --http-port 3000

The Docker image writes artifacts to /data and is published for linux/amd64 and linux/arm64. It defaults to CLOAK_PLAYWRIGHT_MCP_NO_SANDBOX=true for compatibility with containerized runtimes where Chromium sandboxing is often unavailable. If your host and container runtime support Chromium sandboxing, set CLOAK_PLAYWRIGHT_MCP_NO_SANDBOX=false; for untrusted pages, keep container network access and mounted host directories tightly scoped. The same tags are also available from ghcr.io/swimmwatch/cloakbrowser-mcp. See Docker for persistent profiles, extension mounts, HTTPS, and smoke-test examples, or use the reverse proxy recipe for a focused Streamable HTTP deployment.

Docker-backed stdio

{
  "mcpServers": {
    "cloakbrowser": {
      "command": "docker",
      "args": [
        "run",
        "--rm",
        "--init",
        "-i",
        "-v",
        "/tmp/cloakbrowser-artifacts:/data",
        "swimmwatch/cloakbrowser-mcp:latest"
      ]
    }
  }
}

30-second demo

Run npx -y cloakbrowser-mcp@latest, connect Claude Desktop or Codex CLI, ask for web research, daily automation, or testing in plain English, and inspect the real browser result.

Documentation: swimmwatch.github.io/cloakbrowser-mcp · Comparison · Recipes

Use it when you need:

• Playwright MCP browser automation backed by CloakBrowser;
• unchanged upstream browser tools plus two local introspection tools;
• npm or Docker installation over stdio or Streamable HTTP;
• persistent browser profiles, validated context options, and Chrome extension loading;
• GeoIP-aware proxy matching for regional QA;
• humanized mouse, keyboard, and scroll behavior for interaction-sensitive flows.

Cross-platform checks cover npm on Linux x64/arm64, macOS arm64/x64, and Windows x64 across Node.js 22 and 24-26. Docker images are built and smoke-tested for linux/amd64 and linux/arm64.

See @playwright/mcp vs cloakbrowser-mcp when deciding whether plain upstream Playwright MCP or CloakBrowser MCP fits a deployment better. The Recipes pages show task-focused setup paths for persistent login profiles, Chrome extensions, reverse proxies, regional QA, client connections, and CI smoke tests.

Configuration

Use upstream PLAYWRIGHT_MCP_* variables for browser, artifacts, timeouts, network, and tool capability settings. Cloak-specific bridge toggles use CLOAK_PLAYWRIGHT_MCP_*. Select a Pro Preview browser build before startup with --release-channel preview or CLOAK_PLAYWRIGHT_MCP_RELEASE_CHANNEL=preview; the default is stable.

The common variable table now lives in Configuration. That page also covers persistent profiles, validated context options, Chrome extensions, Streamable HTTP metadata, and HTTPS/auth options. See GeoIP Proxy Matching for regional proxy behavior, Humanized Input Behavior for interaction realism, and Recipes for task-focused configurations.

GitHub Copilot In VS Code

{
  "servers": {
    "cloakbrowser": {
      "type": "stdio",
      "command": "npx",
      "args": ["-y", "cloakbrowser-mcp@latest"]
    }
  }
}