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RoboMonkey

Automation

Build Chrome extensions for any website with AI chat—customize pages, automate tasks, and share extensions on a marketplace.

Chrome extensionsbrowser automationno-codeweb customizationAI agents

Overview

RoboMonkey is an AI-powered Chrome extension builder that turns natural-language prompts into working browser extensions without traditional coding. You describe changes for sites like YouTube, LinkedIn, or WhatsApp, and it inspects the page, writes the extension code, and stores it locally in your browser. It is especially useful for UI tweaks, on-page automations, LLM-powered buttons, and data extraction workflows, but community extensions and LLM features deserve a security review before you install or publish them.

Platforms

  • Web

Video review

Prefer YouTube? Open this review on YouTube.

Video transcript

You can now use AI to customize any website and even add new features to it. For example, instead of searching jobs on LinkedIn manually and wasting your time, why not build a little scraper that extracts all the jobs into an Excel sheet automatically? Or if you are always distracted on YouTube, why not remove the sidebar or hide spoilers for your favorite show? You could also add a button that summarizes all the comments under a video and gives you ideas for your own videos to create. The possibilities are really endless and you don't even need technical skills. You just tell the AI what you want and a few minutes later you have your extension. And what's more, you can even share your creations on a marketplace and make money from them. In this video, we will try out this tool together. We will start by building a simple extension and then go to more advanced use cases where we inject new elements into the page and even call an LLM. Then I'll show you how to share and monetize your extensions and you will be amazed by how easy it actually is. My name is Florian Walther and this is the AI tool corner where I review the latest AI software to find out which ones can actually improve our lives and businesses. Let's start with a simple example. Let's say I want to enjoy some Andrew Tate motivational speech on YouTube like I always do, but I don't want to get distracted by all this garbage here on the right side. So why not just remove it? With this tool, I can just open this sidebar and tell the AI what I want to change on YouTube. For example, remove the sidebar on the video watch page with all the recommended videos. And I use Wispr Flow for voice dictation. I have a video on Wispr Flow on my channel as well. I send this message and then the AI immediately gets to work. And I will show you where to find this tool in just a minute. And 2 minutes later, the extension is ready. We have to refresh the page so the changes come into effect. And there we go. The sidebar is removed. Now there is some empty space left. Let's tell the AI to remove it. The sidebar is gone, but there is some empty space left on the right side. Can you remove it? Let's send this follow-up message. And again, the AI will make the necessary changes. And voila, the AI found the problem, fixed it, and now we can enjoy our entertainment motivation without distractions. And whenever I open any YouTube video, this will automatically be applied until we remove this extension. We can even view the code of this extension to see exactly what it's doing under the hood. There it is. It's not very big. And this is stored locally in your browser. Another extension I've built is this the boys spoiler blocker. So, right now, the final season of my favorite show, The Boys, is running. And I've been getting spoiler on YouTube before watching the episode every week. So, I told the AI to remove any video that's related to The Boys. And this is the result. It hides the thumbnail, the title, and only when I hover over it, it actually shows the preview. Down. Here's another one with Homelander, and the AI oneshotted this. I didn't have to fix any issues. It just worked right out of the box. Again, we can look into the source code and see how the code handles this. It created this array of spoiler keywords that contains the names of different the boys characters and related terms. And if they appear in the title, it simply obfuscates the video. But let's try to build something more advanced. So here in the description of a YouTube video, I can find a transcript. I want the AI to extract this transcript, send it to an LLM, and summarize it for me to give me a video summary. But I don't want this to happen every time I open a random video. Instead, I want to add a button that I first have to click to trigger this. So, let's try to create this. This time, I was a bit more detailed in my prompt. Add a button to the video watch page that extracts the video transcript and then sends it to an LLM for summarization and displays the summary somewhere on the page. You can find the transcript in the video's description, which you first have to expand. I want to make sure that the AI doesn't struggle with finding the transcript on the page because I already know where it is. Instead of summarizing every video as soon as I open the page, add a button that I first have to click to trigger the summary. And the AI immediately gets to work. It inspects the page, finds the appropriate elements, and then writes our code. And would you look at that? Now we have the summarize button, which looks like the other buttons on the YouTube page, but this was created by our extension. I had to remove our sidebar remover because the transcript is displayed in the sidebar and otherwise this feature wouldn't work. So now when I click the summarize button, it automatically expands the video description. It opens the transcript. It sends it to an LLM and then when we scroll down, we can see the summary of the video down here. If you want to move any of these elements to a different place on the page, just tell the AI. But here is our video summary. A similar extension that I built earlier is this comments analyzer. When I click that, it automatically scrolls down in the comments to load them all. You can see in the background that it's scrolling down and loading all the comments. And when it's done, it sends these comments to an LLM, summarizes them, and then I get this analysis. Top three themes, viewer sentiment. Isn't this cool? I build this just with a prompt, and I don't have to pay for any third party tools that do the same task. Now, for these AI supported features, of course, the code has to make a request to an LLM, and you get a certain number of AI requests every day. I'm on a paid plan, so I have a lot of them, but even on the free tier, you get credits every day, so you can use this without paying anything. I will put a link to this tool into the video description below. Try it out. But don't close the video yet because I'm going to show you some more cool use cases and how you can monetize your extensions and make money from them. And we also have to talk a little bit about security. You can build extensions for any website. For example, on LinkedIn, I built this extract jobs button. And when I click it, it scrolls down in the list. It clicks each job one by one, extracts the information. When it reaches the end of page one, it automatically opens the next page and repeats the process for page two. I told it to stop after two pages, but you could scrape even more. And then when it's done, it extracts an Excel sheet with all the job data inside it. Isn't this cool? And I built this just with one or two prompts and no technical knowledge. The possibilities are really endless. And there is even a directory of extensions built by others that you can install. This also gives you an idea of the things you can build. For example, we have ad blockers for YouTube. We have autoresponders for X. They even build some kind of cheat software for chess.com. You can build trackers and deal finders for Amazon or even this one which protects you from impulse buys by injecting a short pause before you can buy anything. You can build a message scheduler for WhatsApp. And you can open all of these extensions and install them. Before you install them, you should check the source code to make sure there is no malicious stuff in here because these are built by other people. Now, you're probably not a developer, so you won't understand the code yourself, but you can simply copy all of this, paste it into ChatGPT and ask it to analyze this code and tell me if there's anything suspicious in here. And if ChatGPT says it's fine, then you can install it. You find it in the list together with all our other extensions. And indeed, on WhatsApp, I have this new button down here and a brand new feature. Of course, you can always remove the extension if you don't want to use it anymore. And it's gone. And making money from your extension is actually quite simple. Here in the chat, we have a publish button where we can publish this extension to the directory. The description is generated automatically. And now anyone can install our YouTube transcript summarizer. Then we simply copy the URL to this page and we sign up for the affiliate program right here. We share our extension and whenever someone buys a subscription to Robo Monkey via our affiliate link, we make some money. It's very simple and you can always find the link to your extension page here in the chat. Copy extension URL. Share it with someone, make money. Again, I will put a link to Robo Monkey into the video description below. Try it out yourself. You get free credits every day. And if you built a cool extension, share the link in the video description below. I want to check out what you have built. And let's vote the best ideas to the top so everyone can see them. If you want to see more cool automation videos, check out this playlist here. Subscribe to the channel if you haven't yet and then I hope I see you in the next video. Take care.

Standout features

Chat-to-extension builder
Open the sidebar on a supported site, describe what you want changed or added, and RoboMonkey generates extension code that runs on matching pages after a refresh.
Iterative follow-up edits
Send follow-up messages to refine layout fixes, move UI elements, or adjust behavior without manually editing the generated source.
Inspectable generated code
View the extension source RoboMonkey created so you can understand what it does and verify behavior before relying on it daily.
LLM-powered on-page actions
Build buttons that extract page content such as transcripts or comments, send them to an LLM, and display summaries or analyses on the page.
Automation and data extraction
Create workflows that scroll lists, click through items, paginate, and export structured data such as job listings into spreadsheets.
Extensions directory and publishing
Browse community-built extensions, install them for supported sites, and publish your own extensions with generated descriptions and shareable URLs.
Affiliate monetization for creators
Publish an extension to the directory, copy its page URL, and earn through RoboMonkey's affiliate program when referrals subscribe.

What it's great for

  • Hide distracting UI on sites like YouTube, including sidebars or spoiler-heavy recommendations
  • Add custom buttons that summarize transcripts, analyze comments, or run other LLM workflows on demand
  • Scrape or extract structured data from web apps such as LinkedIn job lists into Excel
  • Prototype browser utilities like ad blockers, autoresponders, deal finders, or impulse-buy delays
  • Install or share useful extensions through the community directory when you trust the source code
  • Monetize useful extensions by publishing them and sharing affiliate links

Pros & cons

Pros
What works especially well
  • Makes useful Chrome extensions approachable without writing code from scratch
  • Can implement surprisingly advanced flows such as pagination, scrolling, and LLM calls from prompts
  • Follow-up chat edits help fix layout issues and refine behavior quickly
  • Generated code is viewable locally, which supports basic trust and learning
  • Free daily credits make LLM-backed features testable before upgrading
  • Directory and publishing make it easy to discover ideas and share creations
Cons
Trade-offs to know upfront
  • Extensions that call LLMs consume daily credits, and heavy use may require a paid plan
  • Community extensions can be risky, so you should review code or have a trusted reviewer check it
  • Conflicting extensions on the same site may need to be disabled manually
  • Complex prompts and site changes can still require iteration or more detailed instructions
  • Currently centered on Chrome-style extension workflows rather than every browser
  • Automations that scrape or interact with third-party sites may conflict with those sites' terms

Best for

  • Non-developers who want custom browser tweaks and lightweight automations without coding
  • Creators and operators who want on-page AI buttons for summaries, research, or comment analysis
  • Recruiters, founders, and researchers who need quick extraction workflows from web apps
  • Extension builders who want to publish utilities and monetize through affiliate sharing
  • Power users who are comfortable reviewing generated JavaScript before trusting sensitive sites

Verdict

RoboMonkey is a strong pick when you want practical Chrome extensions built from conversation instead of a full development setup. It shines for page customization, prompt-built automations, and shareable utilities, as long as you treat LLM credits, site permissions, and third-party extensions with appropriate caution.

FAQ

What is RoboMonkey used for?

RoboMonkey is used to build Chrome extensions with AI by describing what you want changed or automated on a website. Common examples include hiding UI, adding custom buttons, summarizing page content with an LLM, and extracting structured data.

Do I need coding skills to use RoboMonkey?

No. You primarily describe the behavior you want in chat, and RoboMonkey generates the extension code for you. Reviewing the generated source is still recommended, especially for sensitive sites or community extensions.

How do LLM features and credits work?

Extensions that send page content to an LLM use RoboMonkey's AI request credits. Free accounts receive daily credits, and paid plans increase how many AI-backed requests you can run.

Can I share or monetize extensions built with RoboMonkey?

Yes. You can publish extensions to RoboMonkey's directory with an auto-generated description, share the extension page URL, and participate in its affiliate program when referrals subscribe.

Are community extensions in the directory safe to install?

They can be useful, but they are built by other users, so you should inspect the source code or have a trusted reviewer analyze it before installing extensions that can read or change page data.

Which browser does RoboMonkey support?

RoboMonkey is built around Chrome extension workflows and is intended for desktop browser use through its Chrome extension install path.

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