For the last few days, I’ve been building something I originally treated like a fun side project:
A personal J.A.R.V.I.S.-style desktop assistant for macOS.
But somewhere in the middle of building it, it stopped feeling like a toy.
It started to feel like a real interface for thinking.
...Accessibility Services were designed for assistive use cases.
But today, they represent a sensitive trust boundary in Android systems.
Once enabled by the user, an accessibility service can:
Thi...
Who this is for: Senior QA / Automation Engineers transitioning into AI and LLM testing. This blog is structured in two parts: first we go deep on how LLMs actually work (grounded in Andrej Karpathy's "Deep Dive into LLMs"), then we use that foundation to reason clearly about how to test them.
Understanding the internals is not optional. I...
A few months ago I kept losing track of how much I was actually spending on AI.
Not the estimate in my head. The real number.
That was the problem.
I’d finish a day of shipping with Claude, OpenAI, and a bunch of little prompts, then get hit with a bill that felt larger than it should have been. The cost was invisible while I was working, which made it easy to ignore.
JavaScript is one of the most popular programming languages used to build interactive websites. One important concept you will often hear is that JavaScript is single-threaded.
What Does Single-Threaded Mean?
A single-threaded language can execute only one task at a time.
JavaScript has:
One main thread
One call stack
Every AI coding agent reads an instruction file. CLAUDE.md, AGENTS.md, .cursorrules, whatever your agent uses. You write rules in it. The agent says "Done." And you have no idea whether it followed any of them.
We wanted to know what's actually inside these files. Not what people think they contain, but what a machine can extract and verify through static analysis. So we scraped instruc...