A codegen session brackets whatever you did in between and produces a Playwright test file from it, so a bug reproduced by hand leaves a regression test rather than a paragraph in a ticket. The HTTP verbs sitting beside the browser calls mean state can be set up through the API and then checked in the UI.
Playwright behind an agent interface: navigation and interaction by CSS selector including inside iframes, page content as text or cleaned HTML, direct HTTP verbs alongside the browser, response assertions, and a codegen session that writes the test file for whatever happened between start and end.
- A browser opened at a URL with the browser type, headless mode, viewport and wait condition set on the call — chromium by default
- Interaction by selector: click, fill, select, hover, drag, key press and file upload, with click and fill available for elements inside an iframe
- A click that follows into the tab it opens, so a target=_blank flow does not end the session
- Page content as visible text, or as HTML cleaned to taste — scripts, styles, comments and meta stripped, minified, or narrowed to one selector
- Screenshots, the page saved as a PDF, a custom user agent, and resizing either by explicit viewport or by device preset such as iPhone 13, Pixel 7 or Desktop Chrome, which sets user agent, scale factor and touch together
- GET, POST, PUT, PATCH and DELETE with headers and a bearer token, in the same session as the browser
- A wait for a named HTTP response registered first, then asserted once it arrives
- Console logs filtered by type and search term, and JavaScript evaluated in the page
- Codegen sessions as real objects — started, inspected, cleared and ended — with the end writing the Playwright test file
Node, run over stdio from npm as @executeautomation/playwright-mcp-server through npx, or built from a clone and linked locally. The Playwright browser binaries have to be present on the machine — every browser tool fails on launch until they are installed, while the HTTP verbs work without them. Calls take CSS selectors, so you need the page's markup; playwright_get_visible_html will fetch it if you do not have it. The API side does not yet cover OAuth, multipart forms or binary bodies.
One command — npm install -g @executeautomation/playwright-mcp-server