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Building an XPath Query Tool in PHP — Slice XML Like a Pro A zero-dependency PHP CLI that queries XML files with XPath and outputs matchin
Imagine you’re signing a contract for a new house. Once the ink is dry and the document is notarized, you wouldn't want someone to come along and snea
I Wrote a .env Linter from Scratch — Here Are the 9 Rules That Actually Matter A stdlib-only Python CLI that catches the .env mistakes you
You've seen it in JWT tokens, Basic Auth headers, email attachments, and data URLs. It looks like random gibberish — SGVsbG8gV29ybGQ= — but it's not r
A TCP echo server sounds trivial. Accept a connection, read data, send it back. You could write one in 15 lines of Python. But the moment you start ad
Implementing semver 2.0.0 from scratch in TypeScript — no semver package allowed semver-cli — a TypeScript CLI that parses, compares, bump
Your Pipeline Is 18.3h Behind: Catching Sustainability Sentiment Leads with Pulsebit We just spotted something intriguing: a 24h momentum s
I didn't plan to use four AI coding tools. It started with Claude Code. Then Codex CLI dropped, and it was good enough that I had to try it. Then Gem
No Gumroad. No Shopify. No Paddle. Just Stripe + Netlify Functions + Resend — and a customer gets their download link 4 seconds after they pay. Here'
High-Performance Video Streaming API in Go for Global Markets TrendVidStream serves 8 regions across wildly different markets — UAE, Finlan
Your Pipeline Is 18.5h Behind: Catching Blockchain Sentiment Leads with Pulsebit We recently observed a striking anomaly: a 24h momentum sp
The Problem: 100-250ms Middleware Tax Our Node.js Express backend had a dirty secret: before any route handler ran, the middleware stack co
The $300B Loyalty Problem Traditional loyalty points have a 54% abandonment rate. Customers earn points, forget about them, and churn. Wha
When managing documents for long-term preservation, the standard PDF format has inherent limitations. Fonts may not be embedded, dynamic elements like
Building a strict INI parser from scratch in Python — no configparser allowed ini-parser config.ini — a Python CLI that parses INI files i
Most MCP trust scoring today is static: did the repo publish a schema, is there a README, does the org look reputable. That catches zero runtime failu
I've been working on complete trading bot suite (all bots + agent + dashboard) for a while and wanted to share what I learned. The problem
Originally published at v100.ai At V100, we build AI video infrastructure entirely in Rust. 20 microservices. 0.01ms server processing. 220,000+
Every few months I end up staring at a crontab line wondering "is this actually going to fire when I think it will?" The usual answer is to open a b
Writing a compliant RFC 6902 JSON Patch CLI in one evening, zero runtime deps json-patch apply config.json changes.patch.json — a TypeScri