Category
Tech
93 posts
Yellorn: The Browser Tab I Wanted for Dirty Data and Webhook Debugging
A human tour of Yellorn: repair broken JSON, XML, YAML, and CSV, publish mock webhook APIs, send HTTP requests, and keep integration debugging in one focused browser workspace.
Production Google OAuth In One Prompt: I Let Cursor Drive Chrome DevTools MCP
I asked an AI agent to wire production-grade Google OAuth into yellorn.com. One prompt later, it had clicked through Google Cloud Console, configured the consent screen, registered the OAuth client, stored the secrets in Cloudflare, and shipped to prod. I just sipped coffee.
MoneyPrinterV2: What 18,000 Stars Worth of Automated Content Actually Looks Like
An assembly line for AI content — local LLMs write the script, KittenTTS reads it, Gemini paints the pictures. The video uploads itself.
Project N.O.M.A.D.: The Knowledge Bunker You Build for a Rainless Day
When the cloud evaporates, what stays on your disk matters.
ruanyf/weekly: The Digital Lighthouse in a Sea of Algorithmic Slop
At the end of the infinite scroll, one man is still standing.
Superpowers: The Workflow That Teaches AI Agents Discipline
Superpowers makes coding agents slow down, ask questions, write plans, and test first. The result is less flashy AI code, but much more trustworthy code.
The Agency: Transform Your Workflow with a Team of AI Specialists
Discover how The Agency replaces generic prompts with a meticulously crafted roster of specialized AI agents for engineering, design, and more.
BitNet: The Era of 1-bit LLMs is Finally Here
Explore bitnet.cpp, Microsoft's official framework for 1-bit LLMs that replaces multiplications with additions for massive speedups.
Lightpanda: The Zero-Bloat Headless Browser Built in Zig
Discover Lightpanda, a headless browser built from scratch in Zig for ultra-fast AI agents and automation without the overhead of Chromium.
MiroFish: Rehearsing the Future in an AI Social Sandbox
Discover MiroFish, a universal swarm intelligence engine that uses multi-agent simulations to predict future trajectories in a digital mirror world.
How to Find the Best AI Model to Optimize Your PC Hardware
A deep dive into choosing the right LLM model for your local hardware using LM Studio. Learn to read model specs, understand quantization, and maximize GPU performance.
Is OpenClaw Overhyped? A Developer's Perspective in 2026
A grounded look at OpenClaw's real-world value, separating the viral hype from actual capabilities, and why your IDE agent isn't going anywhere.
Defuddle: The Next Generation of Web Content Extraction
Defuddle is an emerging TypeScript alternative to Mozilla Readability. Written for the Obsidian Web Clipper, it extracts clean HTML for markdown conversion, with custom site extractors and math/code block standardization.
Khoj: The Open-Source AI Second Brain You Can Self-Host
Khoj is an open-source personal AI app that acts as your AI second brain — chat with any LLM, search your documents with semantic AI, build custom agents, and self-host it completely on your own machine.
OpenSandbox: The Universal Sandbox Platform Every AI Agent Needs
Alibaba open-sourced a general-purpose sandbox platform for AI applications — supporting Coding Agents, GUI Agents, RL Training and more, with multi-language SDKs and Docker/Kubernetes runtimes.
Stop Context Rot: How Get Shit Done Powers the Ultimate 10x Agentic Engine
A deep dive into GSD (Get Shit Done), a powerful meta-prompting and context-engineering system that averts AI context rot for Claude, Gemini, and general AI agents.
Context Engineering: The Discipline That Separates Good AI Agents from Great Ones
A deep dive into Agent Skills for Context Engineering — the open-source toolkit cited in academic research that teaches you how to curate context windows like a professional AI engineer.
Awesome OpenClaw: From Generic AI to a Team of Autonomous Employees
Discover real-world use cases for OpenClaw that turn a simple chat interface into a proactive, self-healing, and goal-driven autonomous workforce.
Unleashing the Super Agent Harness: A Deep Dive into Bytedance's DeerFlow
Discover how DeerFlow 2.0 transforms from a deep research tool into a full-fledged agent harness with sandboxing, sub-agents, and persistent memory.
GitNexus: The Knowledge Graph That Makes AI Agents Actually Understand Your Codebase
GitNexus indexes any codebase into a knowledge graph — every dependency, call chain, cluster, and execution flow — then exposes it through MCP tools so AI agents never miss code.
Inside the Black Box: What Leaked AI System Prompts Reveal About How Your Favorite Tools Actually Think
A deep-dive into the most comprehensive collection of leaked system prompts from Cursor, Manus, Windsurf, Devin, v0, and 30+ other AI tools — revealing their core architectures, tool designs, and agent philosophies.
Hugging Face Skills: The 'Plug-and-Play' Mental Model for AI Agents
What are Hugging Face Skills? A mastery guide to empowering Claude Code, Cursor, and Gemini CLI with open-source ML capabilities.
OpenBB Explained: The Open Data Platform for Investment Research
A deep dive into OpenBB, the open-source platform that unifies financial data APIs into a single interface for Python developers, analysts, and AI agents.
OpenClaw: Your Personal AI Assistant Across Every Channel
A deep dive into OpenClaw, a self-hosted personal AI assistant that unifies WhatsApp, Telegram, Slack, Discord, Signal, iMessage, and more under a single local-first gateway.
PentAGI Explained: Auto-Hacking with Multi-Agent AI
A deep dive into PentAGI, an autonomous AI-driven penetration testing system combining 20+ security tools with a smart multi-agent architecture.
Pi Mono Explained: The Anti-Framework for AI Coding Agents
A deep dive into Pi Mono, the radically extensible monorepo for building AI agents that refuses to dictate your workflow—and lets you build the agent you actually want.
Shannon Explained: The Autonomous AI Pentester That Breaks Your App Before Hackers Do
A deep dive into Shannon, the fully autonomous AI penetration tester by Keygraph that executes real exploits—not just alerts—using a sophisticated multi-agent architecture.
1 Byte = 8 Bits, So How Many Bytes Is Your Name?
If you have no idea how many bytes a song lyric or even a single letter takes, this post will unlock a core computing skill you're missing.
I Almost Ran Malware from a Fake LinkedIn Recruiter
Fake recruiter, fake repo, real malware. A step-by-step teardown of a LinkedIn scam
Fulfill your dirty fantasies with Comfy UI
Ever tried prompting naughty thoughts in ChatGPT or MidJourney—only to get slapped with a warning? Same. The real fun? Just you, your PC, and your filthy imagination.
GitHub Copilot With VS Code Tricks 101
A comprehensive guide to the most important tricks for maximizing your productivity with GitHub Copilot in VS Code.
How I Built My Dream PC from Shopee
Ever wondered if you can build a great PC from Shopee? Here’s my story—what worked, what didn’t, and how you can build your dream machine on a budget.
AI Agents & Multi-Agent Systems: The 'Company of Robots' Mental Model
What's the difference between ChatGPT and an AI Agent? A mastery guide to tool calling, LangGraph orchestration, and why multi-agent is the architecture of 2026.
Caching & Redis: The 'Sticky Note' Mental Model
Why does Redis make everything faster? A mastery guide to cache invalidation (the hardest problem in CS), eviction strategies, and Redis data types.
CDN: The 'Local Convenience Store' Mental Model
Why does your image load instantly for users in the US but crawls in Vietnam? A mastery guide to CDN Edge Nodes, Cache-Control headers, and cache busting.
CI/CD Pipeline: The 'Factory Assembly Line' Mental Model
Why does 'works on my machine' still happen with Docker? A mastery guide to CI/CD pipelines, GitHub Actions, and zero-downtime Blue/Green deployments.
Database Indexing: The 'Library Card Catalog' Mental Model
Why does adding an index make a query 100x faster? A mastery guide to B-Trees, compound indexes, covering indexes, and the queries that kill your database.
Fine-tuning vs RAG: The 'Teaching vs. Memorizing' Mental Model
When should you fine-tune a model vs. use RAG? A mastery guide to LoRA, PEFT, and the decision framework that saves you from wasting $10,000 GPU hours.
LLM & RAG: The 'Smart Librarian' Mental Model
Why do LLMs hallucinate? A mastery guide to Retrieval Augmented Generation (RAG) — the architecture powering every serious AI product in 2026.
MCP (Model Context Protocol): The 'USB Port for AI' Mental Model
What is MCP and why is every AI tool adopting it in 2026? A mastery guide to Anthropic's open standard for connecting AI models to the real world.
Task Queues & Message Brokers: Celery, RabbitMQ, and Kafka Untangled
Why does sending an email block your API? A mastery guide to async task queues (Celery/Django-Q), message brokers (RabbitMQ), and event streaming (Kafka).
Observability: Logs vs. Metrics vs. Tracing — The 'Doctor's Kit' Mental Model
Your app is slow. Is it the DB? The queue? The network? A mastery guide to the three pillars of observability and how they work together.
Prompt Engineering: The 'Director & Actor' Mental Model
Why does 'be concise' produce worse results than 'answer in 3 bullet points'? A mastery guide to system prompts, few-shot learning, chain-of-thought, and structured output.
Rate Limiting & Circuit Breaker: The 'Traffic Light & Fuse Box' Mental Model
How do you stop one bad client from taking down your entire API? A mastery guide to rate limiting strategies, circuit breakers, and resilience patterns.
Why Cheap Hardware Won't Make Redis Replace a Core Database
As hardware gets cheaper, why not use Redis as the main database? The short answer: because the limitation isn't speed. It's guarantees and data semantics.
REST vs. GraphQL vs. gRPC: The 'Restaurant Menu' Mental Model
Why does GraphQL exist if REST works fine? A mastery guide to API protocols, when to use each, and how gRPC changes the game for internal services.
Vector Databases & Embeddings: The 'Semantic Atlas' Mental Model
How does Spotify know you'll like this song? A mastery guide to embeddings, cosine similarity, and vector databases (Pinecone, Weaviate, pgvector).
When to Use Classes vs. Functions in Python: A Design Checklist
A repeatable mental checklist for Python developers to decide when to use classes, functions, instance state, and dependency injection.
When to Use Dataclasses, Generators, and Try/Except in Python
Phase 2 of the mental checklist for Python developers. Navigating dictionaries vs dataclasses, eager evaluation vs lazy execution, and error handling philosophies.
I Built a Tool to Migrate 500+ Images to WebP in One Hour
My Lighthouse score was crying because of heavy images. So I wrote a Python ETL to bulk-convert everything to WebP and update all the URLs automatically. Here's how.
Why Is Production Still Running My Old Code?
Deployed your latest changes but still seeing the ghost of the old version? Let's talk about the aggressive memory of browsers and how to fix it.
Stop Bloating Your Database: The S3 Pointer Pattern
Why 10MB JSON blobs kill your buffer pool, and how to keep MySQL lean with S3 + presigned URLs.
Verify vs Cert: The Python Requests Handbook
Understanding SSL/TLS in Python Requests: The 'verify' and 'cert' arguments explained with interactive animations.
API Certificates: The Mastery Guide to Debugging & The Chain of Trust
Stop guessing with SSLErrors. A mastery-level guide to the Chain of Trust, openssl debugging, and proving exactly whose fault it is.
Authentication vs. Authorization vs. OAuth: The 'ID Card' Mental Model
Stop mixing up 401 and 403. A mastery guide to AuthN (Who you are), AuthZ (What you can do), and the OAuth Valet Key.
Consistent Hashing: The 'Locker Room' Mental Model
How does Cassandra know which server stores your data? A mastery guide to consistent hashing, virtual nodes, and why your cache doesn't invalidate when a server is added.
Docker vs. Kubernetes: The 'Hotel Manager' Mental Model
Why do I need K8s if I have Docker? A mastery guide to understanding Containers (Robots) vs Orchestration (The Manager).
Latency vs. Throughput: The 'Water Pipe' Mental Model
Why is your API slow even though your internet is fast? A mastery guide to P99 latency, bandwidth, and finding the bottleneck.
Load Balancer, Reverse Proxy, API Gateway: The Grand Hotel Mental Model
Confused by the 'Traffic Trio'? A mastery-level guide to Load Balancers, Reverse Proxies, and API Gateways — from mental models to Nginx configs.
Monolith vs. Microservices: The 'Mansion vs. Village' Mental Model
Is Microservices mostly hype? A mastery guide to the 'Distributed Monolith', Latency taxes, and knowing when to split.
Partitioning, Bucketing, Sharding, Replication, Edge: The Clean Mental Model
A precise mental model for partitioning, bucketing, sharding, replication, and edge computing - when to use each and why they exist at different layers.
SP7 - Proxy - Learn Design Pattern From Simple Things
The boss wants the employees to focus on work and not get distracted by social media. So he decides to block some websites on the corporate network during working hours.
SQL vs. NoSQL: The 'Library vs. Warehouse' Mental Model
Why is MongoDB faster but Postgres safer? A mastery guide to Schema, ACID, and why JSONB might be the only NoSQL you need.
TCP vs. UDP: The 'Registered Mail' Mental Model
Why does video calling glitch but file downloads pause? A mastery guide to the 3-Way Handshake, Head-of-Line Blocking, and why UDP is winning (HTTP/3).
SP6 - Object Pool - Learn Design Pattern From Simple Things
Producing planes on a large scale is expensive, but fortunately the manufactured raw parts are always stored in the pool, thereby reducing duplication in the production process.
SP5 - Facade - Learn Design Pattern From Simple Things
There are many departments in the building and you feel confused! By opening the entrances from the facade according to purposes, you simply follow the pre-arranged flow.
SP4 - Mixer - Learn Design Pattern From Simple Things
You are a dog farm owner who manages the properties of all dog breeds. The number of crossbred dogs is increasing every day because of the emergence of new breeds!
BP10 - Mediator - Learn Design Pattern From Simple Things
In the discussion room without a teacher, you can speak or listen, but when you speak you need to make sure that everyone can hear. Therefore, a loudspeaker is a useful tool.
BP9 - File History - Learn Design Pattern From Simple Things
Undo and redo are common features in editing software. They look simple on the surface, but how do they work internally? How do you design structure and behavior for them?
BP8 - Visitor - Learn Design Pattern From Simple Things
Have you had a chance to watch The Spy Gone North? The spy infiltrated North Korea's secret locations, and collected its secrets effectively by applying the Visitor Pattern!
BP7 - Template Method - Learn Design Pattern From Simple Things
Porsche and Lamborghini are the children of Volkswagen. Their manufacturing process uses the same structure because they both implement the Volkswagen Template Method.
BP6 - State - Learn Design Pattern From Simple Things
Have you ever thought about the ATM logic? How is ATM logic organized to cover all cases without any misses? Do you feel confused when handling many operations on many states?
BP5 - Observer - Learn Design Pattern From Simple Things
Some students in a class are attentive, but others are easily distracted. The teacher is indifferent to them; for her, they are all observers and she just performs her duty.
BP4 - Handling Chain - Learn Design Pattern From Simple Things
As a laid-off employee, you prepare for a series of top companies, and then attempt to apply one by one (only apply the next if the current is rejected) until one hires you.
BP3 - Command - Learn Design Pattern From Simple Things
As an army commander, you have to plan all the tasks for the soldiers, so that they can execute them. This process is called command.
SP3 - Tree - Learn Design Pattern From Simple Things
You need to store the leaves hierarchically, sometimes you will count the leaves. Tree will be a suitable structure to facilitate leaf counting.
CP5 - Singleton - Learn Design Pattern From Simple Things
Apply singleton to maintain a single phone line between the two sides indefinitely instead of repeatedly establishing and disconnecting multiple phone lines for efficiency.
CP4 - Prototype - Learn Design Pattern From Simple Things
Having been with you for a long time, your robot has memories that regular manufacturing can't produce, now you want to clone it. Prototype will be your remedy.
BP2 - Strategy - Learn Design Pattern From Simple Things
As the coach of a strong team, you plan to attack to find a goal and then prioritize possession to preserve the score. This combination is called strategy.
SP2 - Decorator & Function Decorator & Closure - Learn Design Pattern From Simple Things
Having ice creams (popsicle, cone) and curious about how good it will be with extra flavor. For the most authentic experience, you should dip your ice creams in each flavor.
CP3 - Builder - Design Pattern From Simple Things
Building a house involves bringing together many parts, each house has its own specific requirements, you need a builder who can easily implement what you want.
BP1 - Gun (Iterator) - Design Pattern From Simple Things
There are bullets that need to be fired one by one in a specific order. You need a tool to set it up neatly and easily upgrade later.
CP2 - Comparison between Factories: Simple Factory & Factory Method & Abstract Factory - Design Pattern From Simple Things
Simple Factory is da best, Factory Method and Abstract Factory are cumbersome, complicated and stupid?
CP1 - Vending Machine (Factory) - Design Pattern From Simple Things
Different beverages are scattered in different stores, it's too tiring to run through each store to find your beverage. You wish all beverages were sold in one place.
SP1 - Adapter - Learn Design Pattern From Simple Things
Having many devices that need to connect to your Macbook leads to too many cables. You need a tool to replace all those cables.
FBP1 - Google Foobar Plus - Dodge the Lasers!
Level 5: I tried retyping `request` and Google Foobar still revealed the challenge for me
FBP0 - Google Foobar Plus - Disorderly Escape
Level 5: After completing all the levels I tried typing `request` to see what happens, then this challenge is the result
FB5 - Google Foobar - Expanding Nebula | Cellular Automaton
Level 5: The Final Challenge
FB4 - Google Foobar - Free the Bunny Workers & Escape Pods
Level 4: The Real Coding Challenge
FB3 - Google Foobar - Doomsday Fuel & The Grandest Staircase Of Them All & Fuel Injection Perfection
Level 3: The Reading Comprehension Challenge.
FB2 - Google Foobar - Gearing Up for Destruction & Don't Get Volunteered
Level 2: The Math Challenge. Find the formula is the main part.
FB1 - Google Foobar - Minion Work Assignments
Level 1: The Very First Challenge. Learn how to do it and find loopholes for easier debugging.
FB0 - Google Foobar - A Godsend To Kill My Laziness
Google sent me an invitation to take up their challenge!