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Show HN: Browser MCP – Automate your browser using Cursor, Claude, VS Code

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191–200 of 229 posts

Re: Show HN: Browser MCP – Automate your browser using Cursor, Claude, VS Code

#191

Crazy, in looking up some info on the web and creating a Spreadsheet on Google Sheets to insert the results, it worked almost perfectly the first time and completely failed subsequently on 8-10 different tries. Is there an issue with the lag between what is happening in the browser and the MCP app (in my case Claude Desktop)? I have a feeling the first time I tried it, I was fast enough clicking the "Allow for this c…

For me it can't click anywhere on google sheets. I get the following error

--Error: Cannot access a chrome-extension:// URL of different extension

Re: Show HN: Browser MCP – Automate your browser using Cursor, Claude, VS Code

#192

So is MCP the new RPA (Robotics Process Automation)? Like generic yahoo pipes?

I would probably call it shipping containers for LLM tool integrations. Containers are not a big deal when viewed in isolation. But when its common size/standard for all kinds of ships, cranes and trucks, it is a big deal then. In that sense its more about gathering community around one way to do things. In theory there are REST APIs and OpenAPI standard, but those were not made for LLMs but code. So you usually need…

I'm a bit stuck on this, maybe you can explain why an LLM would have any difficulty writing REST API calls? Seems like it should be no problem.

Re: Show HN: Browser MCP – Automate your browser using Cursor, Claude, VS Code

#193
post #173

[!warning!] 1) this projects' chrome extension sends detailed telemetry to posthog and amplitude: - https://storage.googleapis.com/cobrowser-images/telemetry.pn... - https://storage.googleapis.com/cobrowser-images/pings.png 2) this project includes source for the local mcp server, but not for its chrome extension, which is likely bundling https://github.com/ruifigueira/playwright-crx without attribution super suss

The only chrome extensions you should install are ones you can build yourself from source.

... And have reviewed and understand completely

Re: Show HN: Browser MCP – Automate your browser using Cursor, Claude, VS Code

#194

Earlier quoted context omitted.

Actually, the CAPTCHAs are in place mostly because of assholes like you abusing other assholes like you [0]. Most of the automated misbehavior is businesses doing it to other businesses - in many cases, it's direct competition, or a third party the competition outsources it to. Hell, your business is probably doing it to them too (ask the marketing agency you're outsourcing to). > If you truly need access to somethin…

It seems that we have very different types of businesses in mind. I really didn't consider tracking users and displaying ads, but I also don't think this is where these types of tools would be used. Well, they might, but that's as part of some content farm, undesirable bots and downright scams, so nothing of value is really lost if this didn't exist. If you have a sales funnel, as in you take orders and ship somethin…

> It seems that we have very different types of businesses in mind. I really didn't consider tracking users and displaying ads, but I also don't think this is where these types of tools would be used.

I wasn't thinking primarily about tracking and ads here either, when it comes to B2B automation. What I meant was e.g. shops automatically scrapping competing stores on a continued basis, to adjust their own prices - a modern version of the old "send your employees incognito to the nearby stores and have them secretly note down prices". Then you also have comparison-shopping (pricing aggregators) sites that are after the same data, too.

And then of course there's automated reviews (reading and writing), trying to improve your standing and/or sabotage competition. There's all kinds of more or less legit business intelligence happening, etc. Then there's wholesale copying of sites (or just their data) for SEO content farms, and... I could go on.

Point being, it's not the people who want to streamline their own work, make access more convenient for themselves, etc. that are the badly-behaving actors and reasons for anti-bot defenses.

> If you have a sales funnel, as in you take orders and ship something to a customer, consumer or business, I almost guarantee you that you can request an API, if the company you want to purchase from is large enough. They'll probably give you the API access for free, or as part of a signup fee and give you access to discounts. Sometimes that API might be an email, or a monthly Excel dump, but it's an API.

The problem from a POV of a regular users like me is, I'm not in this for business directly; the services I use are either too small to bother providing me special APIs, or I am too small for them to care. All I need is to streamline my access patterns to services I already use, perhaps consolidate it with other services (that's what MCP is doing, with LLM being the glue), but otherwise not doing anything disruptive to their operations. And I'm denied that, because... Bots Bad, AI Bad, Also Pay Us For Privilege?

> When we're talking site that purely survive on tracking users and reselling their data, then yes, they aren't going to give you API access. Some sites, like Reddit does offer it I think, but the price is going to be insane, reflecting their unwillingness to interact with users in this way.

Reddit is an interesting case because the changes to their API and 3rd-party client policies happened recently, and clearly in response to the rise of LLMs. A lot of companies suddenly realized the vast troves of user-generated content they host are valuable beyond just building marketing profiles, and now they try to lock it all up in order to extort rent for it.

Re: Show HN: Browser MCP – Automate your browser using Cursor, Claude, VS Code

#195

Earlier quoted context omitted.

The only chrome extensions you should install are ones you can build yourself from source.

... And have reviewed and understand completely

So ... pretty much none

Keep in mind, extensions can update themselves at any time, including when they're bought out by someone else. In fact, I bet that's a huge draw... imagine buying an extension that "can read and modify data on all your websites" and then pushing an update that, oh I dunno, exfiltrates everyone's passwords from their gmail. How would most people even catch that?

DO NOT have any extensions running by default except "on click".

There should be at least some kind of static checker of extensions for their calls to fetch or other network APIs. The Web is just too permissive with updating code, you've got eval and much more. It would be great if browsers had only a narrow bottleneck through which code could be updated, and would ask the user first.

(That wouldn't really solve everything since there can be sleeper code that is "switched on" with certain data coming over the wire, but better than what we have now.)

Re: Show HN: Browser MCP – Automate your browser using Cursor, Claude, VS Code

#197
post #195

Earlier quoted context omitted.

... And have reviewed and understand completely

So ... pretty much none Keep in mind, extensions can update themselves at any time, including when they're bought out by someone else. In fact, I bet that's a huge draw... imagine buying an extension that "can read and modify data on all your websites" and then pushing an update that, oh I dunno, exfiltrates everyone's passwords from their gmail. How would most people even catch that? DO NOT have any extensions runni…

It would be interesting if you could easily install browser extensions via a source repository URL (e.g. GitHub, or any git URL), then at least there would be more transparency about who/what you are trusting by installing it. Blindly trusting a mostly anonymous chrome store "install" button seems insane, since they don't do any significant policing. Wasn't the promise of safety one of the primary reasons Google started the chrome store?

Re: Show HN: Browser MCP – Automate your browser using Cursor, Claude, VS Code

#198

i want to add this for my project (which use wasm) but rustlang/socket2 WASI support is not merged yet. after that rust CDP will work.

[dead]

> The moment tools like socket2 or HTTP clients land with Preview2

i'm waiting for that as well. my other options are

- either bind a host function to manage wss connection to wasm. fork a CDP lib to use that.

- create a proxy between http/wss maybe. And then fork a CDP lib to use http proxy i think.

Re: Show HN: Browser MCP – Automate your browser using Cursor, Claude, VS Code

#199
post #195

Earlier quoted context omitted.

... And have reviewed and understand completely

So ... pretty much none Keep in mind, extensions can update themselves at any time, including when they're bought out by someone else. In fact, I bet that's a huge draw... imagine buying an extension that "can read and modify data on all your websites" and then pushing an update that, oh I dunno, exfiltrates everyone's passwords from their gmail. How would most people even catch that? DO NOT have any extensions runni…

> So ... pretty much none

You’d be surprised. It describes all the extensions I use.

Re: Show HN: Browser MCP – Automate your browser using Cursor, Claude, VS Code

#200
post #173

[!warning!] 1) this projects' chrome extension sends detailed telemetry to posthog and amplitude: - https://storage.googleapis.com/cobrowser-images/telemetry.pn... - https://storage.googleapis.com/cobrowser-images/pings.png 2) this project includes source for the local mcp server, but not for its chrome extension, which is likely bundling https://github.com/ruifigueira/playwright-crx without attribution super suss

"detailed" is an anonymized deviceId and a counter of tool calls? Heaven forbid an app want to get some basic insights into how people use it.
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