About Fourth Playwright MCP
Fourth Playwright MCP is an MCP server in the Browser category: fourth Playwright MCP server - FastMCP v3 orchestration with @playwright/mcp subprocess for Claude.ai Custom Connector.
Install
git clone https://github.com/Rev4nchist/fourth-playwright-mcpThis server has no ConduID identity, so agent calls to it are not receipted. Pin the version you install and review the source before granting it credentials.
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README
Playwright Web MCP
General-purpose web automation MCP server built on FastMCP v3 and @playwright/mcp.
Gives Claude browser automation capabilities over HTTP — navigate websites, fill forms, extract data, and interact with any web application.
Architecture
Claude.ai / Cowork Plugin
│ Streamable HTTP
▼
FastMCP v3 (Python)
│
├── 70+ playwright_* tools (proxied via subprocess)
├── 19 web_* orchestration tools
├── 1 browser_wait_for wrapper
└── Skills (MCP resources)
Tools
Web Automation (custom orchestration)
| Tool | Purpose |
|---|---|
web_login |
Navigate to login page, discover form fields (auto_fill option) |
web_check_auth_state |
Check if user is authenticated |
web_navigate_and_wait |
Navigate + SPA-aware content waiting |
web_wait_for_ready |
Wait for page content after any action |
web_discover_navigation |
Identify menus, tabs, pagination |
web_extract_table |
Extract table data (rows/csv/markdown, DOM mode) |
web_extract_page_data |
Extract targeted page content |
web_extract_links |
Extract links via DOM (structured data) |
web_discover_form |
Identify form fields, types, refs |
web_fill_form |
Batch-fill form fields |
web_search |
Search Google/DuckDuckGo with filters |
web_search_and_extract |
Search + multi-page content extraction |
web_extract_article |
Clean article text via DOM parsing |
web_extract_metadata |
Page metadata (OG, JSON-LD, meta tags) |
web_save_pdf |
Save page as PDF |
web_save_session |
Save browser session state |
web_load_session |
Restore saved session |
web_execute_js |
Run JavaScript with error handling |
web_extract_structured_data |
CSS selector-based data extraction |
Playwright Primitives (proxied)
All 70+ @playwright/mcp tools are available with a playwright_ prefix:
playwright_browser_navigate, playwright_browser_snapshot, playwright_browser_click, playwright_browser_type, playwright_browser_take_screenshot, and more.
Utility
| Tool | Purpose |
|---|---|
browser_wait_for |
Type-safe wrapper for playwright_browser_wait_for |
Deployment
Railway (production)
The server deploys to Railway via Dockerfile. Set these environment variables:
| Variable | Required | Default | Description |
|---|---|---|---|
PORT |
No | Set by Railway | HTTP port |
HOST |
No | 0.0.0.0 |
Bind address |
OAUTH_CLIENT_ID |
No | — | OAuth client ID (omit to disable auth) |
OAUTH_CLIENT_SECRET |
No | — | OAuth client secret |
OAUTH_AUTHORIZATION_ENDPOINT |
No | Google OIDC | Authorization endpoint |
OAUTH_TOKEN_ENDPOINT |
No | Google OIDC | Token endpoint |
BASE_URL |
No | http://127.0.0.1:8000 |
Server public URL (for OAuth redirects) |
Local development
# Install dependencies
uv sync
# Start server
uv run python src/server.py
# → http://localhost:8000/health
Docker
docker build -t playwright-web-mcp .
docker run -p 8000:8000 playwright-web-mcp
Usage
Claude.ai Custom Connector
Add as a Custom Connector in Claude.ai Project settings:
- URL:
https://<your-app>.railway.app/mcp - Auth: OAuth 2.1 (if configured)
Cowork Plugin
Reference the MCP endpoint in your plugin's .mcp.json:
{
"mcpServers": {
"web": {
"url": "https://<your-app>.railway.app/mcp"
}
}
}
Development
# Run tests
uv run pytest
# Lint
uv run ruff check src/
# Type check
uv run ruff format --check src/
License
Internal use — Fourth Enterprises.
README copy captured when this server was indexed; it may lag the repository. The original is authoritative.