v0.1.20

## What's New

### 🎉 New Commands

- **`webmcp-list` / `webmcp-call`** — List and call the tools a page registers through the [WebMCP](https://webmachinelearning.github.io/webmcp/) API, letting the page do the work instead of driving its UI. When a page has WebMCP tools, the page status reports how many are available ([#42613](https://github.com/microsoft/playwright/pull/42613)). WebMCP is experimental, see [WebMCP in Chrome](https://developer.chrome.com/docs/ai/webmcp) for how to enable it.

### Other Changes

- Headless sessions now shut down after one hour without commands, so a session an agent never closed no longer holds a browser; run `open` again to start a new one. Use `open --idle-timeout <ms>` (config `timeouts.idle`, env `PLAYWRIGHT_MCP_IDLE_TIMEOUT`) to change the timeout, `0` disables it. Headed browsers stay open, and attached browsers are only detached when `attach --idle-timeout <ms>` is set ([#42676](https://github.com/microsoft/playwright/pull/42676))
- The skill includes a guide for attaching screenshots and videos to pull requests with `gh --attach` ([#42645](https://github.com/microsoft/playwright/pull/42645))

## Bug Fixes

- Session daemons exit when their control socket is deleted or replaced, instead of staying alive with the browser ([#42454](https://github.com/microsoft/playwright/pull/42454))
- Explicitly named output files in a nested directory (e.g. `screenshot --filename=sub/shot.png`) no longer fail with `ENOENT` ([#42540](https://github.com/microsoft/playwright/pull/42540))
- Video chapters and screencast overlays are no longer hidden behind open dialogs and popovers ([#42642](https://github.com/microsoft/playwright/pull/42642))
- `npx playwright test --debug=cli` works for tests that create more than one browser context and for every test in a worker, not just the first ([#42503](https://github.com/microsoft/playwright/pull/42503))
- With `PLAYWRIGHT_MCP_EXTENSION_TOKEN` set, `attach --extension` fails after 30 seconds with a hint when the extension never connects (e.g. the token belongs to another Chrome profile) instead of hanging forever ([#42525](https://github.com/microsoft/playwright/pull/42525))
- Disable the Chromium sandbox by default on Linux for the bundled Chromium build, which lacks the setuid sandbox helper ([#42490](https://github.com/microsoft/playwright/pull/42490))

## Upgrading

```bash
npm install -g @playwright/cli@0.1.20
```