MCP Gateway - Documentation

Available Services

Client Configuration

Project Config (.mcp.json)

Create in your project root:

{
  "mcpServers": {
    "chrome": { "type": "sse", "url": "https://mcp.server.oanor.com/chrome/sse" },
    "firefox": { "type": "sse", "url": "https://mcp.server.oanor.com/firefox/sse" },
    "playwright": { "type": "sse", "url": "https://mcp.server.oanor.com/playwright/sse" },
    "selenium": { "type": "sse", "url": "https://mcp.server.oanor.com/selenium/sse" },
    "http": { "type": "sse", "url": "https://mcp.server.oanor.com/http/sse" },
    "state": { "type": "sse", "url": "https://mcp.server.oanor.com/state/sse" },
    "proxy": { "type": "sse", "url": "https://mcp.server.oanor.com/proxy/sse" },
    "captcha": { "type": "sse", "url": "https://mcp.server.oanor.com/captcha/sse" },
    "screenshot": { "type": "sse", "url": "https://mcp.server.oanor.com/screenshot/sse" },
    "crawl": { "type": "sse", "url": "https://mcp.server.oanor.com/crawl/sse" },
    "search": { "type": "sse", "url": "https://mcp.server.oanor.com/search/sse" },
    "thinking": { "type": "sse", "url": "https://mcp.server.oanor.com/thinking/sse" },
    "firecrawl": { "type": "sse", "url": "https://mcp.server.oanor.com/firecrawl/sse" },
    "dbhub": { "type": "sse", "url": "https://mcp.server.oanor.com/dbhub/sse" },
    "git": { "type": "sse", "url": "https://mcp.server.oanor.com/git/sse" },
    "docker": { "type": "sse", "url": "https://mcp.server.oanor.com/docker/sse" },
    "filesystem": { "type": "sse", "url": "https://mcp.server.oanor.com/filesystem/sse" }
  }
}

File: .mcp.json in project root

Cursor Config (.cursor/mcp.json)

Create in your project root:

{
  "mcpServers": {
    "chrome": { "type": "sse", "url": "https://mcp.server.oanor.com/chrome/sse" },
    "firefox": { "type": "sse", "url": "https://mcp.server.oanor.com/firefox/sse" },
    "playwright": { "type": "sse", "url": "https://mcp.server.oanor.com/playwright/sse" },
    "selenium": { "type": "sse", "url": "https://mcp.server.oanor.com/selenium/sse" },
    "http": { "type": "sse", "url": "https://mcp.server.oanor.com/http/sse" },
    "state": { "type": "sse", "url": "https://mcp.server.oanor.com/state/sse" },
    "proxy": { "type": "sse", "url": "https://mcp.server.oanor.com/proxy/sse" },
    "captcha": { "type": "sse", "url": "https://mcp.server.oanor.com/captcha/sse" },
    "screenshot": { "type": "sse", "url": "https://mcp.server.oanor.com/screenshot/sse" },
    "crawl": { "type": "sse", "url": "https://mcp.server.oanor.com/crawl/sse" },
    "search": { "type": "sse", "url": "https://mcp.server.oanor.com/search/sse" },
    "thinking": { "type": "sse", "url": "https://mcp.server.oanor.com/thinking/sse" },
    "firecrawl": { "type": "sse", "url": "https://mcp.server.oanor.com/firecrawl/sse" },
    "dbhub": { "type": "sse", "url": "https://mcp.server.oanor.com/dbhub/sse" },
    "git": { "type": "sse", "url": "https://mcp.server.oanor.com/git/sse" },
    "docker": { "type": "sse", "url": "https://mcp.server.oanor.com/docker/sse" },
    "filesystem": { "type": "sse", "url": "https://mcp.server.oanor.com/filesystem/sse" }
  }
}

File: .cursor/mcp.json in project root

Antigravity Config (mcp_config.json)

Open: ... menu → MCP Servers → Manage MCP Servers → View raw config

Or edit directly:

nano ~/.gemini/antigravity/mcp_config.json

Content (uses mcp-remote for SSE transport):

{
  "mcpServers": {
    "mcp-chrome": {
      "command": "npx",
      "args": ["mcp-remote", "https://mcp.server.oanor.com/chrome/sse", "--transport", "sse-only"]
    },
    "mcp-playwright": {
      "command": "npx",
      "args": ["mcp-remote", "https://mcp.server.oanor.com/playwright/sse", "--transport", "sse-only"]
    },
    "mcp-http": {
      "command": "npx",
      "args": ["mcp-remote", "https://mcp.server.oanor.com/http/sse", "--transport", "sse-only"]
    },
    "mcp-screenshot": {
      "command": "npx",
      "args": ["mcp-remote", "https://mcp.server.oanor.com/screenshot/sse", "--transport", "sse-only"]
    },
    "mcp-crawl": {
      "command": "npx",
      "args": ["mcp-remote", "https://mcp.server.oanor.com/crawl/sse", "--transport", "sse-only"]
    },
    "mcp-search": {
      "command": "npx",
      "args": ["mcp-remote", "https://mcp.server.oanor.com/search/sse", "--transport", "sse-only"]
    },
    "mcp-thinking": {
      "command": "npx",
      "args": ["mcp-remote", "https://mcp.server.oanor.com/thinking/sse", "--transport", "sse-only"]
    },
    "mcp-firecrawl": {
      "command": "npx",
      "args": ["mcp-remote", "https://mcp.server.oanor.com/firecrawl/sse", "--transport", "sse-only"]
    },
    "mcp-dbhub": {
      "command": "npx",
      "args": ["mcp-remote", "https://mcp.server.oanor.com/dbhub/sse", "--transport", "sse-only"]
    },
    "mcp-git": {
      "command": "npx",
      "args": ["mcp-remote", "https://mcp.server.oanor.com/git/sse", "--transport", "sse-only"]
    },
    "mcp-docker": {
      "command": "npx",
      "args": ["mcp-remote", "https://mcp.server.oanor.com/docker/sse", "--transport", "sse-only"]
    },
    "mcp-filesystem": {
      "command": "npx",
      "args": ["mcp-remote", "https://mcp.server.oanor.com/filesystem/sse", "--transport", "sse-only"]
    }
  }
}

Requires Node.js. Uses mcp-remote to bridge SSE servers.

Troubleshooting:

If you see "http-first" errors or connection issues, clear the npx cache:

rm -rf ~/.npm/_npx

Then restart Antigravity completely.

VS Code Settings (settings.json)

Open: Ctrl+Shift+P → Preferences: Open User Settings (JSON)

Add to settings.json:

{
  "mcp.servers": {
    "mcp-chrome": {
      "url": "https://mcp.server.oanor.com/chrome/sse",
      "transport": "sse"
    },
    "mcp-playwright": {
      "url": "https://mcp.server.oanor.com/playwright/sse",
      "transport": "sse"
    },
    "mcp-http": {
      "url": "https://mcp.server.oanor.com/http/sse",
      "transport": "sse"
    },
    "mcp-screenshot": {
      "url": "https://mcp.server.oanor.com/screenshot/sse",
      "transport": "sse"
    },
    "mcp-crawl": {
      "url": "https://mcp.server.oanor.com/crawl/sse",
      "transport": "sse"
    },
    "mcp-search": {
      "url": "https://mcp.server.oanor.com/search/sse",
      "transport": "sse"
    },
    "mcp-thinking": {
      "url": "https://mcp.server.oanor.com/thinking/sse",
      "transport": "sse"
    },
    "mcp-firecrawl": {
      "url": "https://mcp.server.oanor.com/firecrawl/sse",
      "transport": "sse"
    },
    "mcp-dbhub": {
      "url": "https://mcp.server.oanor.com/dbhub/sse",
      "transport": "sse"
    },
    "mcp-git": {
      "url": "https://mcp.server.oanor.com/git/sse",
      "transport": "sse"
    },
    "mcp-docker": {
      "url": "https://mcp.server.oanor.com/docker/sse",
      "transport": "sse"
    },
    "mcp-filesystem": {
      "url": "https://mcp.server.oanor.com/filesystem/sse",
      "transport": "sse"
    }
  }
}

Requires: Claude Code extension or MCP-compatible extension

Service Endpoints

All Services (SSE)

Chrome: https://mcp.server.oanor.com/chrome/sse

Firefox: https://mcp.server.oanor.com/firefox/sse

Playwright: https://mcp.server.oanor.com/playwright/sse

Selenium: https://mcp.server.oanor.com/selenium/sse

HTTP: https://mcp.server.oanor.com/http/sse

State: https://mcp.server.oanor.com/state/sse

Proxy: https://mcp.server.oanor.com/proxy/sse

Captcha: https://mcp.server.oanor.com/captcha/sse

Screenshot: https://mcp.server.oanor.com/screenshot/sse

Crawl: https://mcp.server.oanor.com/crawl/sse

Search: https://mcp.server.oanor.com/search/sse

Thinking: https://mcp.server.oanor.com/thinking/sse

Firecrawl: https://mcp.server.oanor.com/firecrawl/sse

DBHub: https://mcp.server.oanor.com/dbhub/sse

Git: https://mcp.server.oanor.com/git/sse

Docker: https://mcp.server.oanor.com/docker/sse

Filesystem: https://mcp.server.oanor.com/filesystem/sse

Browser Flow (Desktop)

For local development with a browser available:

1. Add config to .mcp.json

2. Start Claude Code - browser opens automatically

3. Log in with your email and password

4. Done! Your session persists indefinitely

Device Flow (SSH / Headless Server)

For remote servers without a browser:

1. Terminal shows: Go to https://mcp.server.oanor.com/device

2. Terminal shows: Enter code: XXXX-0000

3. Open the URL on any device (phone, laptop)

4. Enter the code and log in

5. Return to terminal - authenticated!

Try Device Authorization

mcp-auth CLI Tool

Command-line tool for SSH/headless authentication:

npm install -g mcp-gateway-auth

npm update -g mcp-gateway-auth

Commands:

mcp-auth loginClaude Code (.mcp.json)

mcp-auth login --cursorCursor (.cursor/mcp.json)

mcp-auth login --antigravityGoogle Antigravity

mcp-auth login --vscodeVS Code settings.json

mcp-auth syncSync services (add new, remove old)

mcp-auth reconnectRefresh token (no code needed)

mcp-auth statusShow authentication status

mcp-auth logoutRemove saved credentials

npm update -g mcp-gateway-authUpdate CLI to latest version

Automatically configures all 17 MCP services for your client.

After CLI update: Run mcp-auth sync to add new services and remove old ones.