Instructions:
1. `git clone https://github.com/mxschmitt/playwright-mcp && git
checkout extension-drafft`
2. `npm ci && npm run build`
3. `chrome://extensions` in your normal Chrome, "load unpacked" and
select the extension folder.
4. `node cli.js --port=4242 --extension` - The URL it prints at the end
you can put into the extension popup.
5.
Put either this into Claude Desktop (it does not support SSE yet hence
wrapping it or just put the URL into Cursor/VSCode)
```json
{
"mcpServers": {
"playwright": {
"command": "bash",
"args": [
"-c",
"source $HOME/.nvm/nvm.sh && nvm use --silent 22 && npx supergateway --streamableHttp http://127.0.0.1:4242/mcp"
]
}
}
}
```
Things like `Take a snapshot of my browser.` should now work in your
Prompt Chat.
----
- SSE only for now, since we already have a http server with a port
there
- Upstream "page tests" can be executed over this CDP relay via
https://github.com/microsoft/playwright/pull/36286
- Limitations for now are everything what happens outside of the tab its
session is shared with -> `window.open` / `target=_blank`.
---------
Co-authored-by: Yury Semikhatsky <yurys@chromium.org>
Adds support for the new StreamableHttp transport. I'm not aware of any
clients that implement it, but somebody's gotta make the start! Once
some clients support it, we can also advertise it in the README.
- Adds integrity hashes that were missing for 5 npm packages in
`package-lock.json`
<hr />
Is there a reason hashes for some of these dependencies are missing from
`package-lock.json`?
Right now these omissions prevent me from packaging a nix derivation for
this mcp server directly off this repo
(https://github.com/cameronfyfe/nix-mcp-servers/blob/main/pkgs/servers/mcp-server-playwright/default.nix#L17)
and I was wondering if they might just be missing due to a bad merge or
something odd like that at some point. `npm install` under normal use
doesn't seem to care if the hashes are missing and installs the packages
anyway, but it's a blocker for hermetic build systems like nix.
If this is intentional for some reason I'm not familiar with feel free
to ignore and close.
