Top 10 Claude Code Skills, Plugins & CLIs (April 2026)

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Transcript

00:00:00If I was just starting Claude code in 2026,
00:00:02then these are the top 10 skills, plugins, and CLIs
00:00:05that I would install and start using right away.
00:00:08But even if you aren't brand new to Claude code,
00:00:11I still think you're gonna get introduced
00:00:12to a few you haven't seen before.
00:00:14And if that's the case, then I've done my job.
00:00:16So number one on the list is the Codex plugin for Claude code.
00:00:20Yes, that Codex from OpenAI.
00:00:22We have the ability to use Codex in conjunction with Claude.
00:00:27Now you might ask, why would I do that?
00:00:28Well, there's a very specific use case
00:00:30where you can get a ton of value
00:00:31out of combining these two tools.
00:00:33And that is Codex review and Codex adversarial review.
00:00:37Because when we create something in Claude code,
00:00:39especially if you don't come from a technical background,
00:00:41it can be difficult for us to actually assess
00:00:44if the code it created was the best path forward.
00:00:48Sure, I can look at the outputs, whatever Claude code gave me,
00:00:51but if I look at the actual code,
00:00:52do you know what's going on?
00:00:54Do I know what's going on?
00:00:55Not necessarily, if that isn't our domain.
00:00:58And while I can tell Claude code,
00:00:59take a look at your code and review it,
00:01:03the truth is most large language models,
00:01:06Opus 4.6 and Sonnet 4.6 included,
00:01:09look very nicely on their own code.
00:01:11They're not gonna come back and say, my code sucks.
00:01:14However, if we use an outside agent like Codex
00:01:16to do the code review for us,
00:01:18especially an adversarial review,
00:01:20where it's really getting into the nuts and bolts
00:01:22of how we put it together and telling us this is wrong,
00:01:25this isn't, well, we have a recipe for better outputs
00:01:29and better foundations inside of Claude code.
00:01:32Now installing this is very simple.
00:01:33If you search for a Codex plugin, Claude code,
00:01:35it's gonna take you to this GitHub and adding it
00:01:38and then installing it to the marketplace
00:01:39is as simple as copying these commands,
00:01:42going inside of Claude code and pasting them in there.
00:01:44Once you install it,
00:01:45you just have to run the reload plugins
00:01:47and then run Codex setup.
00:01:49To use this, you do need an open AI account.
00:01:52So if you have a chat GPT account,
00:01:53even if it's the go plan seven bucks a month,
00:01:55that's more than enough.
00:01:56From there, you just open Claude code
00:01:58in whatever project you're running
00:01:59and you run the command Codex colon adversarial review.
00:02:02And it will do all of this automatically.
00:02:04Now Codex has a few other commands,
00:02:05like a normal review that's not as hardcore.
00:02:09And you can also specify what exactly you want it to review.
00:02:12It also has options like Codex rescue.
00:02:14So if you want Claude code to just like give up
00:02:16and stop actually working for you,
00:02:18you want Codex to do the work,
00:02:19but you still wanna be inside the Claude code ecosystem.
00:02:21Maybe it's for a specific feature.
00:02:23We can use the Codex rescue command to do that.
00:02:26So all in all, this is a great plugin
00:02:28to add to any project you're running with Claude code,
00:02:30because it allows you to have a second set of eyes
00:02:32that are anthropics on your code
00:02:34to tell you if what you're doing makes sense.
00:02:36So before we move on a quick plug
00:02:38for my Claude code masterclass,
00:02:39it is the number one way to go from zero to AI dev,
00:02:42no matter your technical background or lack thereof.
00:02:46We focus on real use cases
00:02:47and it is updated every single week.
00:02:50So if you want to really master this tool, check it out.
00:02:54It's inside of Chase AI+.
00:02:55I'll put a link to that down in the comment.
00:02:57And also if you're just getting started,
00:02:59I also have the free Chase AI community.
00:03:01There's a link to that in the description.
00:03:03Now plugin number two is probably one
00:03:04you've heard a lot about lately.
00:03:06And that is Obsidian in conjunction with the Obsidian skills.
00:03:11So Obsidian is just a way for us to organize markdown files.
00:03:14So organize text files.
00:03:16It's completely free and it's super easy
00:03:18to set up with Claude code.
00:03:20If you go to obsidian.md, you can download it for free,
00:03:23install it and all you do is you set one file
00:03:26on your computer as the vault.
00:03:27I call mine the vault, you can call it whatever you want.
00:03:29From there, you just open up Claude code inside the vault,
00:03:32like I did here and you're pretty much ready to go.
00:03:34From that point forward,
00:03:35everything Claude code creates inside of that vault.
00:03:38And if it's a markdown file will become part of Obsidian.
00:03:40It creates these cool knowledge graphs like this,
00:03:42but what's actually cool about it is it makes it really easy
00:03:46for you to organize stuff.
00:03:47Obsidian sort of becomes a miniature rag system
00:03:50without all the overhead.
00:03:52This is something we walked through in a recent video
00:03:53and I'll link it above where I showed you
00:03:55how to create a vault system with Obsidian and Claude code
00:03:59that mimics what Carpathi was talking about
00:04:01in a recent viral tweet.
00:04:02This sort of very simple to set up folder system
00:04:05allows us to have a clear pathway
00:04:06where we have Claude code research things for us
00:04:08and then take that research
00:04:10and turn them into different Wiki articles
00:04:12that are simply organized by sub folders.
00:04:15That means we can have a system with hundreds,
00:04:16if not thousands of documents
00:04:18that are easy for both Claude code and us to navigate.
00:04:21And the easiest way to make sure Claude code
00:04:22is using Obsidian to its full potential
00:04:25is to install the Obsidian skills.
00:04:27This is from the creator, from the CEO of Obsidian himself.
00:04:31And it's just a simple GitHub repo
00:04:33that includes a set of skills that teach Claude code
00:04:36how to best use it.
00:04:36This sort of setup is perfect if you're using Claude code
00:04:39in any sort of personal assistant type project
00:04:41or any project that has a large and growing corpus
00:04:44of markdown files.
00:04:46And speaking of Carpathi,
00:04:47the third tool you wanna add to your Claude code toolbox
00:04:50is auto research.
00:04:52So auto research is essentially a machine learning algorithm
00:04:55in a box that we can use with Claude code
00:04:57to improve anything we want.
00:04:59We simply install auto research onto our computer
00:05:02using a few lines of code seen here.
00:05:04And then we simply open up Claude code and say,
00:05:07hey, I have some sort of program I'm trying to optimize.
00:05:10I have some sort of skill I'm trying to make better.
00:05:13Let's use auto research to do this.
00:05:15And it's going to run essentially
00:05:17a bunch of machine learning experiments on that program
00:05:21that you're trying to improve all automatically.
00:05:23It will discard any changes that don't improve the program.
00:05:26It will commit any changes that do.
00:05:27And over time, like you see here, you get a better product.
00:05:31And again, this runs all automatically.
00:05:32You don't really have to do anything.
00:05:34So auto research is perfect
00:05:35if you're doing anything in Claude code
00:05:37where you're trying to optimize something.
00:05:39Now, the fourth thing I wanna talk about
00:05:40is this brand new repo and set of skills.
00:05:42It's called awesomedesign.md.
00:05:45And it is all about front end design
00:05:47because Claude code sucks at it.
00:05:48Even with some of the baked in skills like front end design,
00:05:51it's just not very good.
00:05:52This is a huge step forward.
00:05:54So design MD takes a lot of its inspiration
00:05:56from Google stitch, which is what you see here.
00:05:58Google stitch is an AI tool.
00:06:00That's all about front end design.
00:06:01And one of the things Google stitch does
00:06:03is it creates design.md files for any website it's creating.
00:06:08Net design MD file, which you see over here on the right,
00:06:10looks something like this.
00:06:12I have it here inside of the notepad.
00:06:14So hopefully it's a little easier to see.
00:06:15It's just a very detailed,
00:06:18very well thought out prompt structure
00:06:20for creating front end designs, for creating web pages.
00:06:22This isn't something as simple as,
00:06:24hey, don't make it look like AI slop
00:06:27and change how the bento boxes look.
00:06:29This is much more detailed.
00:06:30And that is what awesomedesign.md is based on.
00:06:34What this repo does is it's taken a bunch of popular websites
00:06:38like Claude, like 11 Labs, like Cohere, on and on and on.
00:06:42And it's turned their websites
00:06:44into a design.markdown file like this.
00:06:47What does that mean for you?
00:06:48Well, that means when you're designing a website
00:06:50and you have some sort of inspiration,
00:06:52say from a website like Figma or Notion or Pinterest,
00:06:55and you want to use that as a foundation
00:06:57for what you're about to build,
00:06:58well, you just come in here,
00:07:00you click on one of these markdown files,
00:07:03and it essentially gives you a template in that style
00:07:06that you can use for your webpage.
00:07:08Everything from buttons to colors, to fonts, all that.
00:07:11This is a great jumping off point
00:07:13instead of just praying via prompt
00:07:15that Claude gives you something you like.
00:07:17And to use it is very easy.
00:07:18I would just copy this command, bring it inside a Claude code.
00:07:21It's gonna have all of this ready to go.
00:07:24This repo just came out last week.
00:07:25It's already at 38,000 stars.
00:07:26So if you're doing anything that requires a webpage
00:07:29that you don't want to look like crap,
00:07:31definitely check this out.
00:07:32Now for number five, let's talk about some CLI tools
00:07:35and specifically Fireacrawl CLI and the Fireacrawl skill.
00:07:39For the most part, every time we talk about a CLI tool,
00:07:41a command line interface,
00:07:42you're going to want a skill as well
00:07:44because the skill teaches called code how to use the CLI.
00:07:48So there are almost always a package deal.
00:07:51Now Fireacrawl is perfect
00:07:52if you're doing any sort of web scraping,
00:07:55especially if you're doing web scraping
00:07:57that has a lot of anti-bot protections built in.
00:08:00Because if you just rely on Claude code, standard web search,
00:08:03you're gonna run into issues
00:08:05on some of these more protected websites.
00:08:07Fireacrawl can get through all of that.
00:08:09Now, the big thing with Fireacrawl
00:08:10isn't that it just can go past these bot protections,
00:08:13but that when it goes and grabs data from the web,
00:08:15it brings it back in a structured format
00:08:17that's easier for large language models to read.
00:08:19Now, like all these CLI tools,
00:08:20installing this is literally one line of code.
00:08:22And while the main Fireacrawl product
00:08:24does require you to pay for an API,
00:08:26Fireacrawl also is open source.
00:08:28You won't have the proprietary Fireacrawl engine,
00:08:32which is essentially how they get past
00:08:34the more powerful bots.
00:08:35But if you're just trying to do some basic web scraping,
00:08:37and you don't need insane bot detection busters,
00:08:42then you might wanna just use
00:08:43the open source version as well.
00:08:45So you have some options here.
00:08:46Then moving on to another CLI
00:08:48that's also in the browser automation space,
00:08:51and that is the Playwright CLI.
00:08:52Nice thing about this one, totally free.
00:08:55Will you still pay for tokens?
00:08:56But it's not like the Fireacrawl web app version
00:08:58that requires us to pay for an API.
00:09:00So the Playwright CLI is the latest
00:09:03and greatest version of Playwright.
00:09:05It is better than the Playwright MCP.
00:09:07So if anyone tells you use the MCP, don't listen to them.
00:09:10The CLI is more effective, and it is cheaper.
00:09:13And so the Playwright CLI, what it does,
00:09:15it allows us to have Cloud Code
00:09:17do browsers automation on our behalf.
00:09:19Now, what do I mean by that?
00:09:20I mean, Cloud Code using Playwright
00:09:22will actually create its own instances of Chrome,
00:09:25as if you opened up Chrome and then do things on them,
00:09:28like log into websites and test things.
00:09:30Now, there's actually a lot going on with Playwright.
00:09:32It has a million different commands,
00:09:34but because you're using inside of Cloud Code,
00:09:36you don't need to know everything that you see here.
00:09:38Cloud Code understands what the commands are supposed to do.
00:09:42So once you install the Playwright CLI,
00:09:44you can just say something like,
00:09:45hey, Cloud Code, I want you to create new instances of Chrome
00:09:50and I want you to test the new website I just created,
00:09:52like test the form submission,
00:09:53and it will create as many Google Chrome tabs,
00:09:56essentially, as you want it to.
00:09:57And this is way better than the built-in Cloud with Chrome
00:10:01that you've seen running around.
00:10:02So there is a Cloud in Chrome Google extension
00:10:05where it will bring up a tab
00:10:07and Cloud will do things for you.
00:10:08That isn't great because the Cloud Code with Chrome
00:10:11is based off of screenshots,
00:10:13which are very slow and very expensive.
00:10:15That's not how Playwright looks.
00:10:17That's not how Playwright looks at the webpage
00:10:18and executes things.
00:10:20Playwright is actually looking at code under the hood.
00:10:23It's looking at what's called an accessibility tree,
00:10:24which makes it way more effective.
00:10:26So if you're doing anything where you need Cloud Code
00:10:28to actually manipulate web pages on the internet,
00:10:31this is what you wanna use.
00:10:32Now, tool number seven is one of my favorites
00:10:35and that is NotebookLM-PINE.
00:10:36If you've watched my channel at all,
00:10:37you've definitely seen me talk about this one.
00:10:40This CLI tool, alongside its skills,
00:10:43allows us to essentially hook up Cloud Code
00:10:46through the NotebookLM web app
00:10:48because the standard NotebookLM doesn't have an API.
00:10:50We can't naturally have Cloud Code talk to it.
00:10:52Yet, by using the CLI tool, we can do exactly that,
00:10:56which means anything you can do normally on NotebookLM,
00:11:00we can now do inside of Cloud Code and more
00:11:04because things like batch downloads, slide revision,
00:11:07full text access, and programmatic sharing,
00:11:10that's not available on the actual NotebookLM web app,
00:11:13but it's available through this system we use,
00:11:15through the CLI tool.
00:11:16And this also includes all the deliverables.
00:11:18So things like videos, slide decks, reports, everything,
00:11:22you can now do via Cloud Code.
00:11:23And the best part is it's essentially free.
00:11:26Everything that Cloud Code will be doing for analysis
00:11:29when you put in sources, whether it's YouTube videos
00:11:30or PDFs or whatever, well, that's actually offloaded
00:11:33to Google servers in this case.
00:11:35So if you're somebody who's struggling
00:11:36with Cloud Code usage, combining it with something
00:11:39like NotebookLM is a godsend
00:11:41because you're using way less tokens.
00:11:44Google's doing all the analysis,
00:11:45and then it just hands it to Cloud Code and you.
00:11:48Like all these tools, installation is very simple.
00:11:50It's a couple lines of code.
00:11:51And frankly, with all these tools,
00:11:52when it comes to installation,
00:11:54you can just tell Cloud Code what you're trying to do,
00:11:56and it will do it for you.
00:11:57You can just give it the URL for this GitHub.
00:11:59You can copy and paste the whole page.
00:12:01All of those things work.
00:12:02Cloud Code's smart enough to understand
00:12:04what commands it needs to run.
00:12:05Now, number eight is a skill,
00:12:07and arguably the most important skill you can learn,
00:12:10and that is the Skill Creator skill.
00:12:12Now, what makes this skill so much more powerful
00:12:14than the rest isn't that it just creates new skills.
00:12:17It's that it can measure skill performance.
00:12:20So if you're trying to create a custom skill,
00:12:22you need to know if this new skill
00:12:25actually improves whatever output you're trying to generate
00:12:28versus not having it at all.
00:12:30Before this Skill Creator skill, we really couldn't do that.
00:12:33Well, at least we couldn't do it easily.
00:12:34But now, by using the Skill Creator skill,
00:12:36it will actually run benchmarks and run A/B tests
00:12:39and give you quantifiable data
00:12:42from which you can start making decisions.
00:12:44And it isn't just with the skill or without the skill.
00:12:46By using the skill, we can test different improvements
00:12:49we're trying to make.
00:12:50So if I edit a skill because I think it's better,
00:12:52again, it can benchmark it in the same way.
00:12:54And this is huge because skills
00:12:56are arguably the most powerful native feature
00:12:58inside of Claude code.
00:12:59So if you ever are going to create your own skill
00:13:02or edit an existing skill, you need to use this.
00:13:05And it's very easy to install
00:13:06because it's an official Claude code plugin.
00:13:08So you're just gonna go slash plugin.
00:13:10You're going to be brought to the marketplace
00:13:13and then you just search for Skill Creator skill
00:13:15and install it.
00:13:16Now, number nine is a little niche,
00:13:17but it's one of my favorites and that is LightRag.
00:13:20This is an open source graph rag system.
00:13:23That is perfect.
00:13:24If you're trying to create something
00:13:25that's more robust than Obsidian.
00:13:27Now, Obsidian is obviously amazing,
00:13:28but there is a certain scale
00:13:29at which it begins to break down.
00:13:31And it is in fact cheaper and quicker
00:13:33to use a proper rag system.
00:13:35LightRag is perfect for this,
00:13:37primarily because it's lightweight and it's free.
00:13:39We don't have to go out there and pay
00:13:40for some wildly expensive graph rag system
00:13:43like graph rag itself from Microsoft.
00:13:46So if you're looking for something a little more robust,
00:13:48maybe you're doing a client project
00:13:49or you're dealing with something that is thousands
00:13:52and thousands of documents in size,
00:13:54LightRag is perfect for you.
00:13:55And last but not least is GWS.
00:13:57This is the CLI tool that will allow you
00:14:00to connect Claude code and your entire Google suite.
00:14:03This is super powerful,
00:14:05especially if you're trying to use Claude code.
00:14:06It's any sort of personal assistant.
00:14:08If you want Claude code to interact with your email,
00:14:10your docs, your calendar, you need this.
00:14:12Because there's been a lot of hacking things in the past
00:14:14that tried to do it,
00:14:15but this was created by Google developers.
00:14:18It is not an official Google product,
00:14:20but the Google team built this.
00:14:22So for all intents and purposes,
00:14:23it's one step below having the official Google stamp.
00:14:26Now, the one downside with GWS is the actual setup
00:14:29can be a little laborious and technical
00:14:31because you have to run through the Google cloud
00:14:33and enable a lot of things.
00:14:35I will put a link to a video above that can help with that.
00:14:38But the other thing you need to keep in mind
00:14:40is the amount of skills that are available to you.
00:14:43If you use GWS, you can see right here,
00:14:45all the different skills that are related to using GWS.
00:14:50And that's not necessarily a bad thing.
00:14:51A lot of these skills are essentially tailor-made workflows,
00:14:56things like rescheduling a meeting
00:14:57or organizing your drive folder
00:14:59or scheduling a recurring event.
00:15:01So instead of just hoping Claude code
00:15:03can gobble all the original skills together
00:15:06and figure out how to make the workflow work,
00:15:08well, Google was nice enough, or their team at least,
00:15:11was nice enough to give us all these recipes just for free.
00:15:15We don't have to think about it.
00:15:16But there's so many, you don't want all these loaded at once.
00:15:18So what I suggest you do is point Claude code at this repo
00:15:22and simply say, hey, which one of these
00:15:24are actually relevant for us
00:15:25and what we do in our day-to-day.
00:15:27So if you're someone who's trying to use Claude code
00:15:29as a personal assistant,
00:15:31as essentially what OpenClaw is presented as,
00:15:35then GWS is something you wanna use.
00:15:37So if you're new,
00:15:38I hope you were able to take a lot out of this video.
00:15:40If you're someone who's a bit more experienced,
00:15:42I hope at least two or three of those were brand new to you
00:15:44because there are so many tools, so many CLIs,
00:15:47so many plugins that are being added
00:15:49to the Claude code ecosystem every single day.
00:15:51It just gets very overwhelming.
00:15:53So I wanted to try to cut through all the noise
00:15:56and give you what I actually use on a very regular basis.
00:15:59So as always, let me know in the comments what you thought.
00:16:02Make sure to check out Chase AI+
00:16:04if you wanna get your hands on that Claude code masterclass,
00:16:06and I'll see you around.

Key Takeaway

Optimizing Claude code in 2026 requires a modular stack of specialized CLIs and plugins, such as Codex for adversarial review and Playwright for code-based browser automation, to overcome the native model's limitations in self-correction and front-end design.

Highlights

The Codex plugin enables adversarial code reviews by utilizing OpenAI agents to find flaws that Anthropic models often overlook in their own outputs.

Obsidian skills transform Claude code into a miniature Retrieval-Augmented Generation (RAG) system using simple markdown file organization.

Awesomedesign.md provides detailed prompt templates based on established websites like 11 Labs and Notion to fix Claude's inherent front-end design weaknesses.

Playwright CLI executes browser automation by analyzing the accessibility tree and underlying code rather than relying on expensive, slow screenshots.

NotebookLM-PINE offloads heavy document and video analysis to Google servers, significantly reducing token consumption for Claude code users.

The Skill Creator plugin allows for quantifiable benchmarking and A/B testing to measure if custom skills actually improve specific code outputs.

GWS connects Claude code to the entire Google Suite, including Gmail and Calendar, using workflows developed by Google engineers.

Timeline

Adversarial Code Review with Codex

  • LLMs like Sonnet 4.6 rarely identify critical flaws in their own generated code.
  • The Codex plugin introduces adversarial review to provide an outside perspective on code foundations.
  • A standard OpenAI account, including the $7 monthly plan, supports all Codex setup requirements.

Combining two different model families creates a recipe for better output validation. Users run the Codex adversarial review command to get a second set of eyes that are not Anthropic-based. This setup includes a rescue command that allows Codex to take over specific tasks while remaining within the Claude ecosystem.

Knowledge Management through Obsidian and Auto Research

  • Obsidian functions as a free, low-overhead RAG system for organizing project markdown files.
  • The Obsidian skills repo provides Claude with native knowledge of folder-based vault systems.
  • Auto Research automates machine learning experiments to optimize existing program performance.

Setting a single computer folder as a vault allows Claude to turn research into structured Wiki articles. This system handles thousands of documents through a simple folder hierarchy that both the AI and user can navigate. Auto Research complements this by running background experiments and committing only the changes that measibly improve product performance.

Advanced Front-End Design and Web Scraping

  • Awesomedesign.md uses Google Stitch inspiration to provide high-fidelity templates for UI components.
  • Fireacrawl CLI bypasses advanced anti-bot protections that standard web searches cannot penetrate.
  • Structured data return from Fireacrawl makes web content more legible for large language models.

Claude often struggles with front-end aesthetics, but awesomedesign.md provides detailed prompt structures for buttons, colors, and fonts based on popular modern sites. Fireacrawl acts as a specialized scraper for protected sites, offering an open-source version for basic tasks or a proprietary engine for bypassing powerful bot detection. Both tools ensure Claude works with high-quality, structured visual and textual data.

Browser Automation and Resource Optimization

  • Playwright CLI is more effective and cheaper than MCP-based or screenshot-based automation tools.
  • NotebookLM-PINE enables programmatic access to Google’s notebook features without an official API.
  • Offloading analysis to Google servers preserves Claude tokens during heavy PDF or YouTube processing.

Playwright creates actual Chrome instances to test form submissions and site logic by looking at the accessibility tree. This is faster and more precise than tools that rely on visual screenshots. NotebookLM-PINE bridges the gap between Claude and Google's analysis tools, providing full text access and batch downloads for free by utilizing Google’s hardware.

Benchmarking Skills and Google Suite Integration

  • The Skill Creator skill uses A/B testing to provide quantifiable data on custom skill performance.
  • GWS connects Claude to Gmail, Drive, and Calendar through workflows built by Google developers.
  • Selective skill loading prevents system bloat when managing numerous GWS automation recipes.

Custom skills are the most powerful native feature, but they require benchmarking to ensure they don't degrade output quality. GWS offers specialized recipes for tasks like rescheduling meetings or organizing Drive folders, though it requires technical setup in Google Cloud. Pointing Claude at the GWS repo allows it to identify which specific workflows are relevant to the user's daily tasks without loading unnecessary code.

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