If you’ve ever integrated crypto payments into a real system, you probably remember the moment things “worked.” An invoice was created. It felt simple. Until it wasn’t. A webhook arrives twice. At that point, most teams don’t question their webhook design. They question crypto itself. That’s usually the wrong conclusion. The Problem Isn’t Webhooks, It’s How We Treat Them Webhooks are often treated
Everyone told me I needed Python for AI. I didn't listen. Here's what happened. Let me be real with you. Every time I say "I'm building an AI agent," people assume I'm wrist-deep in Python virtual environments, pip dependencies, and a LangChain tutorial from 2023. And when I say "in Java?" — I get the look. You know the one. So I built it anyway. A fully functional AI agent. With tool use. With R
"Build it and they will come" is a myth. Indie developers need to engineer growth into the product from day one. This guide covers growth loop design, referral mechanics with real Dart code, UTM attribution, and analytics setup — all things you can ship in a weekend. A funnel is linear and leaky: Ads → Landing page → Sign-up → Paid. When users drop off, growth stops. A growth loop is self-reinforc
How I added LLM fallback to my OpenAI app in 10 minutes You're running a production app on OpenAI. One Tuesday morning it goes down. Your app returns 500s. You spend an hour refreshing status.openai.com. There's a better setup. Here's how to add provider fallback to any OpenAI-SDK app without rewriting anything. When you call OpenAI directly, you have one point of failure: from openai import Ope
Uma skill ruim gera código ruim em escala. Uma skill boa gera código bom em escala. A diferença entre as duas não está na ferramenta, está em como a skill foi construída. Quando uma skill é criada sem contexto suficiente, a IA passa a alucinar sistematicamente: gera código tecnicamente válido, mas semanticamente errado. E faz isso toda vez que a skill é chamada, para todo mundo que a usa. Percebi
The Problem (3 paragraphs) MuJoCo is the fastest-growing robotics simulator Converting URDF to MJCF is painful (./compile is buggy, urdf2mjcf ignores off-diagonal inertia, mesh paths break) You just want to convert and start training your RL agent The Solution (show curl + Python code) @robot.urdf" import roboinfra Real Example (use your preview_test_arm.urdf) Show the input URDF (6 links, 5 j
The problem (3 sentences) ROS CI pipelines are slow because check_urdf needs full ROS install Most GitHub Actions runners don't have ROS You just want to catch broken joint refs before merging The solution (show the YAML) 6 lines of GitHub Action config No ROS install, no Docker, runs in 5 seconds Real example (screenshot) Show NASA Robonaut 2 URDF passing validation Show a broken URDF failing wit
Supabase Realtime streams PostgreSQL changes to clients over WebSocket. Combine it with Flutter and you can ship live notifications, "who's online" indicators, and collaborative editing in dozens of lines of code. This guide covers all three channel types — Postgres Changes, Presence, and Broadcast — with production-ready examples. Type Use Case Data Source Postgres Changes React to INSERT/