Blog

n8n: AI Agent and Guardrails – Security Basics When Working with AI

Learn how to secure user data in n8n AI agents using the Guardrails node to filter unwanted content and protect sensitive information in your automations.

Next.js, Ahrefs, and KIMI: How I Hit a Perfect 100 Health Score

The story of achieving a perfect Ahrefs Health Score on my Next.js site - with a little help from KIMI's AI-powered analysis

Testing Kimi Code: First Impressions from Web and CLI

Why I started testing Kimi Code, how it compares to Claude Code, and why the $1.49 first-month deal made it a no-brainer

Why You Shouldn't Cram Multiple Webhooks Into One n8n Workflow

Discover why cramming multiple webhooks into one n8n workflow backfires, and how splitting them into separate workflows saves you real debugging headaches.

DRY, WET, AHA: Finding the Right Balance in Code Reuse

Explore the DRY, WET, and AHA principles for code reuse and learn when duplication actually helps rather than hurts the maintainability of your codebase.

API vs Webhook: Understanding the Difference

Understand the key difference between APIs and webhooks, when to pull data with a request, and when to let webhooks push real-time updates to your app.

RTCROS Framework: Structure Your Prompts for Better AI Results

Learn the six-part RTCROS prompting framework to structure your AI prompts and get consistent, high-quality responses from ChatGPT, Claude, and other LLMs.

Understanding the Simple Memory Node in n8n AI Agents

Understand how the Simple Memory node works in n8n AI agents, how window size controls context, and why your chatbot suddenly forgets what you told it.

How I improved my Next.js website SEO

How I raised my Next.js website's Ahrefs Health Score from 28 to 99 in six weeks using Cursor, Vercel, and Google Search Console to fix SEO issues.

Workflow Automation Platforms Comparison 2025

A complete comparison of 7 leading workflow automation platforms, including n8n, Make, Zapier, and Power Automate, covering pricing, AI, and integrations.

llms.txt and llms-full.txt: Making Your Website AI-Readable

Use llms.txt & llms-full.txt files to help AI systems understand your website and potentially boost visibility in AI-generated answers.

Trivy: Security Scanner for Containers & Kubernetes

Learn how to use Trivy for container security scanning. Detect vulnerabilities in Docker images and secure your deployments effectively.

TOON vs TRON vs JSON vs YAML vs CSV for LLM Apps

Analysis of 14 real-world scenarios: TOON cuts LLM token costs 75% and TRON 40% vs JSON, while staying compatible

Flowlint CLI: Make Your n8n Workflows Robust

A quick guide to setting up and using Flowlint CLI to improve the reliability and maintainability of your n8n workflows.

Flowlint: Stop Using Generic Node Names in n8n

Learn why generic node names hurt n8n workflow maintenance and how Flowlint's R10 rule keeps your automations self-documenting and easy to debug later.

Flowlint: Missing Retry & Backoff Config - Real Case

Make n8n workflows resilient by configuring retry & backoff for HTTP Request nodes. Practical guide with Flowlint examples.

TOON vs JSON vs YAML vs CSV for LLM Applications

Analysis of 14 scenarios: TOON cuts LLM token costs 75% vs JSON while maintaining full feature parity. Comprehensive comparison.

n8n Linter - Flowlint

Let the Flowlint check your n8n workflows for errors and security issues. Robust tool for maintaining high quality of your workflows.

n8n Guardrails - Passing an object

Learn to pass objects to n8n Guardrails by stringifying JSON, sanitizing PII, and parsing back. Full workflow & configuration steps.

n8n Guardrails Testing

Testing n8n Guardrails node announced Oct 30, 2025. Explores anonymization challenges & data restoration for AI automation builders.

n8n forum - Trust level promotion

A few weeks ago, I started contributing to the n8n forum by answering questions and sharing my knowledge.

Ollama - how to use it with cURL

List Ollama models & send chat/generate requests via cURL. Practical Llama 3 examples with streaming & non-streaming responses.

n8n Workflow: Export WordPress Posts for SEO

An n8n workflow that exports WordPress posts with categories and tags into Google Sheets, helping content managers and SEO teams audit their site taxonomy.

n8n Workflow: Automating LinkedIn Profile Search for HR

An n8n workflow that helps HR recruiters automate LinkedIn profile collection from Google Search into a Google Sheet using simple keywords like job and city.

n8n Workflow: Auto-Assign Categories & Tags with AI

Build an n8n workflow that uses OpenAI to auto-suggest categories and tags for Markdown blog posts in GitHub and log the results in Google Sheets.

Overwritting print function in Python

Did you knew that you can easily overwrite print function using `FunctType`? This is a simple example of how to do it.

Master SASS Installation with This Quick Guide

Ever dreamed of variables or functions in CSS? The easiest way to get them is by using a preprocessor like SASS.

Unleash the Power of Autoexecuted Objects in JavaScript

Sometimes you will need to create autoexecuted object (for example in case of load/document ready events)

Pure CSS Collapsible Elements: Create Accordion

Learn how to create collapsible elements and accordion components using pure CSS-no JavaScript needed

Pure JavaScript: Private and Public Methods Guide

Learn how to create private and public methods in pure JavaScript using closures and prototypes, a practical guide to object-oriented patterns without ES6.

Front-End Developer Interview Questions Part 1

Essential CSS and HTML interview questions for front-end developers. Quick skill assessment guide for headhunters and candidates.

DevMeeting Angular 2: Exploring the Future

My recap of the DevMeeting Angular 2.0 workshop in Krakow, a one-day event where developers learn the basics of a new framework together in a group.

Raspberry Pi node.js and how to start with programming GPIO

Start programming Raspberry Pi GPIO with Node.js. Introduction to the PixPress project on GitHub. Hardware meets JavaScript.

Fix Angular 2 Pipes: Resolve TypeError

How I fixed the TypeError Cannot read property length of undefined error in an Angular 2 pipe by handling data that is undefined when filtering a list.

Angular 2 - How to pass more parameters to Pipe

Pipes are very important element of Angular 2 framework. Create your own pipe to transform and filter your data.

Professional CSS by Piotr Sikora

A chapter-by-chapter overview of Professional CSS, my book published by Packt covering Sass, Gulp, the box model, responsive design, Flexbox and more.

Resolve Uncaught RangeError Maximum Call Stack Size Exceeded

I was using a lot of plugins which can make my life easier when Im dealing with inputs especially checkboxes and radio buttons.

Test Your Mastery: Challenge Your Knowledge of CSS Selectors

Do you want to check your fundamental knowledge of FEDev? Check it out! Run it and test your knowledge about selectors.

ScreenshotMaker with Vue.js: First Look & HTTP

A first look at Vue.js building a ScreenshotMaker app: using the CLI, vue-resource for HTTP GET requests, a simple component and basic client-side routing.

Vue.js ScreenshotMaker Part 2: Using Jade & Variables

Part 2 of the Vue.js ScreenshotMaker: refactoring how we call data variables and swapping raw HTML for Jade templating inside single-file components.

LazySass: Emmet-Based Mixins in Sass

Discover LazySass, a set of Emmet-inspired atomic mixins for Sass that shorten common CSS rules and convert pixels to rem units automatically.

Image to HTML table. Transform image to HTML table.

A small Node.js script that turns any source image into a colorful HTML table, a neat trick for showing logos in emails when image loading is blocked.

Angular Side Effects with @Effect & NgRx CRUD

Essential CRUD Snippets. Angular is giving great tools to build application and NgRx gives you opportunity to manage you app with state.

MeetJS Kielce: Inauguration 2019.02.07 – Join Us!

MeetJS arrives in Kielce! Join our JavaScript community. Upcoming talk on side projects & skill development. Join us if you're nearby!

MeetJS Kielce #001: After the Meetup Highlights

A recap of the very first MeetJS Kielce meetup for JavaScript, UI and front-end developers, with thanks to everyone who made this debut event happen.

Hands On Tech - Internet of Things (IOT)

My recap of the Hands On Tech Internet of Things meetup in Kielce, with talks on IoT design mistakes, affordable smart homes and first steps with an IoT server.

Why I Started Working with Stylus CSS Preprocessor

Discover why Stylus became my CSS preprocessor of choice. Explore its features, benefits, and how it improves development workflow.

MeetJS Kielce #002: After the Meetup Highlights

A recap of the second MeetJS Kielce meetup, with talks on Axios vs Fetch, reactive application state and doing in CSS what you often write in JavaScript.

Axios Empty Data: CORB & CORS Issues Explained

I had a situation last week with requests to server from Vue using Axios where data field has been empty.

Vue, Vue Router, Vuex with TypeScript - Part 1

A beginner-friendly guide to starting a Vue.js project with Vue Router and Vuex using TypeScript, from Vue CLI setup to building a simple CRUD app.

State Machine Game: Build Your Own Redux-Like Engine

Learn how to build your own Redux-like state machine engine in JavaScript from scratch, implementing getState, dispatch, and subscribe methods step by step.

Pug Video Course: Master Template Engine

Announcing my free video course on the Pug template engine, from the basics of tags and attributes to advanced concepts like conditionals and mixins.

State Management: Prepare Environment Properly

To start project we will need to create node project. I assume that you have installed Node.js on your machine.

Removing Unwanted Files from Your WordPress Server

How I cleaned a hacked WordPress site full of thousands of spam HTML files injected under wp-content/uploads/et_temp, plus tips to check your own instance.

HTTP Security Headers: Change Headers in WordPress

Learn how to set HTTP security headers in WordPress, including X-Frame-Options, HSTS, Referrer-Policy, and more, to harden your site against common attacks.

Cadillacs and Dinosaurs, Michael Jackson's Moonwalker.

Nostalgic look at classic arcade games: Cadillacs and Dinosaurs & Michael Jackson's Moonwalker. Childhood gaming memories revisited.

WordPress: Disable XML-RPC What It Is and Why It's Important

Learn what WordPress XML-RPC is, why xmlrpc.php is a security risk, and how to disable it using .htaccess.

XOR Cipher Implementation: Encryption in Python

Explore XOR cipher implementation in Python. Learn how this encryption algorithm works with practical code examples and analysis.

Master JavaScript Destructuring for Cleaner Code

Master JavaScript destructuring to write cleaner, faster code, extracting values from nested objects and arrays with less boilerplate and more clarity.

Conditional (Ternary) Operator in JavaScript Guide

Learn how the conditional (ternary) operator works in JavaScript, with clear examples showing how to replace if...else statements with inline logic.

Cursor IDE ELI5 : Explain Like I'm 5 - Cursor's AI Feature

Do you ever wonder what a piece of code really does, especially when revisiting old code or maintaining someone else’s legacy project?

State of AI in IT Q4 2024

Since the emergence of LLMs on the market, I've been quite skeptical of them. Now I can say that they are a great tool for IT professionals.

Angular / Vue / React or Front End Developer?

Does it matter which JavaScript framework you use? A short reflection on labelling yourself an Angular, React or Vue developer and switching between them.

AI Leaks in copanies by Securitum

Short training by Tomek Turba gave me a great overview of issues related to AI Security in companies

AI Leaks in copanies by Securitum

Short training by Tomek Turba gave me a great overview of issues related to AI Security in companies

after-hours(1)AI(7)ai-en(1)angular(4)automatic-tests(1)Automation(2)cryptography(1)css(8)CyberSecurity(2)Development(7)DevOps(1)events(3)javascript(11)n8n(11)ollama(1)security(2)seo(1)

n8n

n8n: AI Agent and Guardrails – Security Basics When Working with AI

Development

Next.js, Ahrefs, and KIMI: How I Hit a Perfect 100 Health Score

Development

Testing Kimi Code: First Impressions from Web and CLI

Automation

Why You Shouldn't Cram Multiple Webhooks Into One n8n Workflow

Development

DRY, WET, AHA: Finding the Right Balance in Code Reuse

n8n: AI Agent and Guardrails – Security Basics When Working with AI

Learn how to secure user data in n8n AI agents using the Guardrails node to filter unwanted content and protect sensitive information in your automations.

Next.js, Ahrefs, and KIMI: How I Hit a Perfect 100 Health Score

The story of achieving a perfect Ahrefs Health Score on my Next.js site - with a little help from KIMI's AI-powered analysis

Testing Kimi Code: First Impressions from Web and CLI

Why I started testing Kimi Code, how it compares to Claude Code, and why the $1.49 first-month deal made it a no-brainer

Why You Shouldn't Cram Multiple Webhooks Into One n8n Workflow

Discover why cramming multiple webhooks into one n8n workflow backfires, and how splitting them into separate workflows saves you real debugging headaches.

DRY, WET, AHA: Finding the Right Balance in Code Reuse

Explore the DRY, WET, and AHA principles for code reuse and learn when duplication actually helps rather than hurts the maintainability of your codebase.

API vs Webhook: Understanding the Difference

Understand the key difference between APIs and webhooks, when to pull data with a request, and when to let webhooks push real-time updates to your app.

RTCROS Framework: Structure Your Prompts for Better AI Results

Learn the six-part RTCROS prompting framework to structure your AI prompts and get consistent, high-quality responses from ChatGPT, Claude, and other LLMs.

Understanding the Simple Memory Node in n8n AI Agents

Understand how the Simple Memory node works in n8n AI agents, how window size controls context, and why your chatbot suddenly forgets what you told it.

How I improved my Next.js website SEO

How I raised my Next.js website's Ahrefs Health Score from 28 to 99 in six weeks using Cursor, Vercel, and Google Search Console to fix SEO issues.

Workflow Automation Platforms Comparison 2025

A complete comparison of 7 leading workflow automation platforms, including n8n, Make, Zapier, and Power Automate, covering pricing, AI, and integrations.

llms.txt and llms-full.txt: Making Your Website AI-Readable

Use llms.txt & llms-full.txt files to help AI systems understand your website and potentially boost visibility in AI-generated answers.

Trivy: Security Scanner for Containers & Kubernetes

Learn how to use Trivy for container security scanning. Detect vulnerabilities in Docker images and secure your deployments effectively.

TOON vs TRON vs JSON vs YAML vs CSV for LLM Apps

Analysis of 14 real-world scenarios: TOON cuts LLM token costs 75% and TRON 40% vs JSON, while staying compatible

Flowlint CLI: Make Your n8n Workflows Robust

A quick guide to setting up and using Flowlint CLI to improve the reliability and maintainability of your n8n workflows.

Flowlint: Stop Using Generic Node Names in n8n

Learn why generic node names hurt n8n workflow maintenance and how Flowlint's R10 rule keeps your automations self-documenting and easy to debug later.

Flowlint: Missing Retry & Backoff Config - Real Case

Make n8n workflows resilient by configuring retry & backoff for HTTP Request nodes. Practical guide with Flowlint examples.

TOON vs JSON vs YAML vs CSV for LLM Applications

Analysis of 14 scenarios: TOON cuts LLM token costs 75% vs JSON while maintaining full feature parity. Comprehensive comparison.

n8n Linter - Flowlint

Let the Flowlint check your n8n workflows for errors and security issues. Robust tool for maintaining high quality of your workflows.

n8n Guardrails - Passing an object

Learn to pass objects to n8n Guardrails by stringifying JSON, sanitizing PII, and parsing back. Full workflow & configuration steps.

n8n Guardrails Testing

Testing n8n Guardrails node announced Oct 30, 2025. Explores anonymization challenges & data restoration for AI automation builders.

n8n forum - Trust level promotion

A few weeks ago, I started contributing to the n8n forum by answering questions and sharing my knowledge.

Ollama - how to use it with cURL

List Ollama models & send chat/generate requests via cURL. Practical Llama 3 examples with streaming & non-streaming responses.

n8n Workflow: Export WordPress Posts for SEO

An n8n workflow that exports WordPress posts with categories and tags into Google Sheets, helping content managers and SEO teams audit their site taxonomy.

n8n Workflow: Automating LinkedIn Profile Search for HR

An n8n workflow that helps HR recruiters automate LinkedIn profile collection from Google Search into a Google Sheet using simple keywords like job and city.

n8n Workflow: Auto-Assign Categories & Tags with AI

Build an n8n workflow that uses OpenAI to auto-suggest categories and tags for Markdown blog posts in GitHub and log the results in Google Sheets.

Overwritting print function in Python

Did you knew that you can easily overwrite print function using `FunctType`? This is a simple example of how to do it.

Master SASS Installation with This Quick Guide

Ever dreamed of variables or functions in CSS? The easiest way to get them is by using a preprocessor like SASS.

Unleash the Power of Autoexecuted Objects in JavaScript

Sometimes you will need to create autoexecuted object (for example in case of load/document ready events)

Pure CSS Collapsible Elements: Create Accordion

Learn how to create collapsible elements and accordion components using pure CSS-no JavaScript needed

Pure JavaScript: Private and Public Methods Guide

Learn how to create private and public methods in pure JavaScript using closures and prototypes, a practical guide to object-oriented patterns without ES6.

Front-End Developer Interview Questions Part 1

Essential CSS and HTML interview questions for front-end developers. Quick skill assessment guide for headhunters and candidates.

DevMeeting Angular 2: Exploring the Future

My recap of the DevMeeting Angular 2.0 workshop in Krakow, a one-day event where developers learn the basics of a new framework together in a group.

Raspberry Pi node.js and how to start with programming GPIO

Start programming Raspberry Pi GPIO with Node.js. Introduction to the PixPress project on GitHub. Hardware meets JavaScript.

Fix Angular 2 Pipes: Resolve TypeError

How I fixed the TypeError Cannot read property length of undefined error in an Angular 2 pipe by handling data that is undefined when filtering a list.

Angular 2 - How to pass more parameters to Pipe

Pipes are very important element of Angular 2 framework. Create your own pipe to transform and filter your data.

Professional CSS by Piotr Sikora

A chapter-by-chapter overview of Professional CSS, my book published by Packt covering Sass, Gulp, the box model, responsive design, Flexbox and more.

Resolve Uncaught RangeError Maximum Call Stack Size Exceeded

I was using a lot of plugins which can make my life easier when Im dealing with inputs especially checkboxes and radio buttons.

Test Your Mastery: Challenge Your Knowledge of CSS Selectors

Do you want to check your fundamental knowledge of FEDev? Check it out! Run it and test your knowledge about selectors.

ScreenshotMaker with Vue.js: First Look & HTTP

A first look at Vue.js building a ScreenshotMaker app: using the CLI, vue-resource for HTTP GET requests, a simple component and basic client-side routing.

Vue.js ScreenshotMaker Part 2: Using Jade & Variables

Part 2 of the Vue.js ScreenshotMaker: refactoring how we call data variables and swapping raw HTML for Jade templating inside single-file components.

LazySass: Emmet-Based Mixins in Sass

Discover LazySass, a set of Emmet-inspired atomic mixins for Sass that shorten common CSS rules and convert pixels to rem units automatically.

Image to HTML table. Transform image to HTML table.

A small Node.js script that turns any source image into a colorful HTML table, a neat trick for showing logos in emails when image loading is blocked.

Angular Side Effects with @Effect & NgRx CRUD

Essential CRUD Snippets. Angular is giving great tools to build application and NgRx gives you opportunity to manage you app with state.

MeetJS Kielce: Inauguration 2019.02.07 – Join Us!

MeetJS arrives in Kielce! Join our JavaScript community. Upcoming talk on side projects & skill development. Join us if you're nearby!

MeetJS Kielce #001: After the Meetup Highlights

A recap of the very first MeetJS Kielce meetup for JavaScript, UI and front-end developers, with thanks to everyone who made this debut event happen.

Hands On Tech - Internet of Things (IOT)

My recap of the Hands On Tech Internet of Things meetup in Kielce, with talks on IoT design mistakes, affordable smart homes and first steps with an IoT server.

Why I Started Working with Stylus CSS Preprocessor

Discover why Stylus became my CSS preprocessor of choice. Explore its features, benefits, and how it improves development workflow.

MeetJS Kielce #002: After the Meetup Highlights

A recap of the second MeetJS Kielce meetup, with talks on Axios vs Fetch, reactive application state and doing in CSS what you often write in JavaScript.

Axios Empty Data: CORB & CORS Issues Explained

I had a situation last week with requests to server from Vue using Axios where data field has been empty.

Vue, Vue Router, Vuex with TypeScript - Part 1

A beginner-friendly guide to starting a Vue.js project with Vue Router and Vuex using TypeScript, from Vue CLI setup to building a simple CRUD app.

State Machine Game: Build Your Own Redux-Like Engine

Learn how to build your own Redux-like state machine engine in JavaScript from scratch, implementing getState, dispatch, and subscribe methods step by step.

Pug Video Course: Master Template Engine

Announcing my free video course on the Pug template engine, from the basics of tags and attributes to advanced concepts like conditionals and mixins.

State Management: Prepare Environment Properly

To start project we will need to create node project. I assume that you have installed Node.js on your machine.

Removing Unwanted Files from Your WordPress Server

How I cleaned a hacked WordPress site full of thousands of spam HTML files injected under wp-content/uploads/et_temp, plus tips to check your own instance.

HTTP Security Headers: Change Headers in WordPress

Learn how to set HTTP security headers in WordPress, including X-Frame-Options, HSTS, Referrer-Policy, and more, to harden your site against common attacks.

Cadillacs and Dinosaurs, Michael Jackson's Moonwalker.

Nostalgic look at classic arcade games: Cadillacs and Dinosaurs & Michael Jackson's Moonwalker. Childhood gaming memories revisited.

WordPress: Disable XML-RPC What It Is and Why It's Important

Learn what WordPress XML-RPC is, why xmlrpc.php is a security risk, and how to disable it using .htaccess.

XOR Cipher Implementation: Encryption in Python

Explore XOR cipher implementation in Python. Learn how this encryption algorithm works with practical code examples and analysis.

Master JavaScript Destructuring for Cleaner Code

Master JavaScript destructuring to write cleaner, faster code, extracting values from nested objects and arrays with less boilerplate and more clarity.

Conditional (Ternary) Operator in JavaScript Guide

Learn how the conditional (ternary) operator works in JavaScript, with clear examples showing how to replace if...else statements with inline logic.

Cursor IDE ELI5 : Explain Like I'm 5 - Cursor's AI Feature

Do you ever wonder what a piece of code really does, especially when revisiting old code or maintaining someone else’s legacy project?

State of AI in IT Q4 2024

Since the emergence of LLMs on the market, I've been quite skeptical of them. Now I can say that they are a great tool for IT professionals.

Angular / Vue / React or Front End Developer?

Does it matter which JavaScript framework you use? A short reflection on labelling yourself an Angular, React or Vue developer and switching between them.

AI Leaks in copanies by Securitum

Short training by Tomek Turba gave me a great overview of issues related to AI Security in companies

AI Leaks in copanies by Securitum

Short training by Tomek Turba gave me a great overview of issues related to AI Security in companies

after-hours(1)AI(7)ai-en(1)angular(4)automatic-tests(1)Automation(2)cryptography(1)css(8)CyberSecurity(2)Development(7)DevOps(1)events(3)javascript(11)n8n(11)ollama(1)security(2)seo(1)

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guardrails

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n8n

youtube

n8n best practices

n8n chat node

n8n ai agent node

openai

seo

nextjs

ahrefs

ai

kimi

web-performance

ai

developer-tools

programming

cli

productivity

llm

n8n

webhook

automation

best-practices

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clean-code

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llm

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cursor

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activepieces

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geo

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chatgpt

perplexity