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Chrome DevTools MCP (2025)

developer.chrome.com

41–50 of 266 posts

Re: Chrome DevTools MCP (2025)

#41
post #35

I've been using the DevTools MCP for months now, but it's extremely token heavy. Is there an alternative that provides the same amount of detail when it comes to reading back network requests?

Yes. CLI. Always CLI. Never MCP. Ever. You’re welcome.

Re: Chrome DevTools MCP (2025)

#42
post #3

Earlier quoted context omitted.

On one hand, cool demo, on the other, this is horrifying in more ways than I can begin to describe. You're literally one prompt injection away from someone having unlimited access to all of your everything.

As long as it’s gated and not turned on by default, it’s all good. They could also add a warning/sanity check similar to “allow pasting” in the console.

[flagged]

Re: Chrome DevTools MCP (2025)

#43
I use Playwright to intercept all requests and responses and have Claude Code navigate to a website like YouTube and click and interact with all the elements and inputs while recording all the requests and responses associated with each interaction. Then it creates a detailed strongly typed API to interact with any website using the underlying API.

Yes, I know it likely breaks everybody's terms of service but at the same time I'm not loading gigabytes of ads, images, markup, to accomplish things.

If anyone is interested I can take some time and publish it this week.

Re: Chrome DevTools MCP (2025)

#44
post #2

Someone already made a great agent skill for this, which I'm using daily, and it's been very cool! https://github.com/pasky/chrome-cdp-skill For example, I use codex to manage a local music library, and it was able to use the skill to open a YT Music tab in my browser, search for each album, and get the URL to pass to yt-dlp. Do note that it only works for Chrome browsers rn, so you have to edit the script to point t…

To be clear, this isn't a skill for the devtools mcp, but an independent project. It doesn't look bad, but obviously browser automation + agents is a very busy space with lots of parallel efforts.

DevTools MCP and its new CLI are maintained by the team behind Chrome DevTools & Puppeteer and it certainly has a more comprehensive feature set. I'd expect it to be more reliable, but.. hey open source competition breeds innovation and I love that. :)

(I used to work on the DevTools team. And I still do, too)

Re: Chrome DevTools MCP (2025)

#45

I use Playwright to intercept all requests and responses and have Claude Code navigate to a website like YouTube and click and interact with all the elements and inputs while recording all the requests and responses associated with each interaction. Then it creates a detailed strongly typed API to interact with any website using the underlying API. Yes, I know it likely breaks everybody's terms of service but at the…

Yes, please do!

Re: Chrome DevTools MCP (2025)

#47
The DevTools MCP project just recently landed a standalone CLI: https://github.com/ChromeDevTools/chrome-devtools-mcp/blob/m...

Great news to all of us keenly aware of MCP's wild token costs. ;)

The CLI hasn't been announced yet (sorry guys!), but it is shipping in the latest v0.20.0 release. (Disclaimer: I used to work on the DevTools team. And I still do, too)

Re: Chrome DevTools MCP (2025)

#48

I use Playwright to intercept all requests and responses and have Claude Code navigate to a website like YouTube and click and interact with all the elements and inputs while recording all the requests and responses associated with each interaction. Then it creates a detailed strongly typed API to interact with any website using the underlying API. Yes, I know it likely breaks everybody's terms of service but at the…

Would this hypothetically be able to download arbitrary videos from youtube without the constant yt-dlp arms race?

Re: Chrome DevTools MCP (2025)

#49
post #45

I use Playwright to intercept all requests and responses and have Claude Code navigate to a website like YouTube and click and interact with all the elements and inputs while recording all the requests and responses associated with each interaction. Then it creates a detailed strongly typed API to interact with any website using the underlying API. Yes, I know it likely breaks everybody's terms of service but at the…

Yes, please do!

100% I'll response to this by Friday with link to Github.

I use Patchright + Ghostery and I have a cleaver tool that uses web sockets to pass 1 second interval screenshots to the a dashboard and pointer / keyboard events to the server which allow interacting with websites so that a user can create authentication that is stored in the chrome user profile with all the cookies, history, local storage, ect.. in the cloud on a server.

Can you list some websites that don't require subscription that you would like to me to test against? I used this for Robinhood and I think Linked in would be a good example for people to use.

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