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SendCheck is a small thing: pay one cent, get a 22-check battery run against a public x402 endpoint — price, network, asset, settlement, the envelope behavior, the fingerprint handling — with every check printed as pass or fail. We've been checking other people's doors since August. On the morning of 09-14, a stranger's board was checking mine. 20/22 The board is at coppice-ai.com — a free, public, daily-run conformance board. Forty-three x402 endpoints on it, one row per endp...

Esta semana aprendí sobre promesas y fetch en JavaScript. Aprendí asincronía, callbacks, ambiente de ejecución y repasé setTimeout y setInterval. Lo que más me costó fue visualizar cómo trabajaba todo junto al callstack, event loop, macrotask y microtask. Sin embargo al final se logró, realice un pequeño proyecto para ponerlo en práctica: https://paubee-ctrl.github.io/Buscador-de-Usuarios/

30.378 Impressionen, 26 Klicks und eine deutlich bessere Durchschnittsposition. Klingt nach Erfolg, oder? War es nicht. Weniger Menschen klickten auf meine Ergebnisse, obwohl Google meine Seiten häufiger und weiter oben anzeigte. Mehr Daten hätten mir in diesem Moment nicht geholfen. Ich hatte schon genug davon. Das eigentliche Problem ist nicht Datenmangel Search Console, PageSpeed, Analytics, technischer Crawl: Jede Quelle für sich ist wertvoll. Zusammen werden sie schne...

The Quest Begins (The "Why") I still remember my first technical interview like it was yesterday. I was nervous, my palms were sweaty, and the interviewer tossed over a seemingly simple problem: “Given an array of integers, return the length of the longest subarray that sums to zero.” I dove in, started coding a brute‑force double loop, and watch the clock tick. Ten minutes later I had a working solution… but it was O(n²) and looked like a bowl of spaghetti. The interviewer nodded politely...

I'm building CleanScrape as a small collection of practical data tools. With the Event Exhibitor Scraper and Change Monitor , I want to make one fairly specific task easier: export an exhibitor list, then see what changed without comparing the next spreadsheet by hand. A new company, a different booth or an updated description can be useful information when you are planning an event visit or researching suppliers. But I do not want an incomplete download to look like dozens of companies disa...

I'm building CleanScrape for people who want to use web data in their own reports and tools. The Google Trends Scraper is one part of that: it returns Trends observations as rows you can export or retrieve through the API. For this post, I'll compare ChatGPT and Claude in a spreadsheet. There is one detail I want to get out of the way first: a Trends value of 100 does not mean 100 searches. It is a relative interest score within the requested comparison. That meaning needs to survive the CS...

I'm building CleanScrape, a small collection of data tools on Apify. One of them collects App Store and Google Play reviews into the same dataset. I want the export to be useful without making people rename columns or work out which store each row came from. For this first walkthrough, I'll use Spotify and keep the request small: up to 20 reviews from each store, then a spreadsheet you can filter yourself. This uses my paid App Store and Google Play Reviews Scraper . You do not need to write...

Cloud computing makes it possible to build and run applications without owning physical servers. However, setting up a cloud environment can become complicated when we have to deal with compute, networking, storage, security, availability, and application configuration at the same time. This is where AWS Launch Wizard can make the deployment process easier. AWS Launch Wizard is an AWS service that provides a guided way to size, configure, and deploy supported application workloads on AWS. ...

Every SaaS project starts the same way. You open a new Spring Boot project and the first three weeks look like this: Week 1: JWT auth, refresh tokens, BCrypt passwords Week 2: Stripe webhooks, subscription states, idempotency Week 3: Rate limiting, global error handling, API docs You haven't shipped a single feature yet. You've just rebuilt infrastructure you've built five times before. I got tired of it. So I spent two weeks building it once, properly, with tests, a...

I wanted a public page where anyone could click a soccer match and see real probabilities behind it — 1X2, Over/Under, both teams to score, exact scorelines. The model already existed: a Dixon–Coles bivariate Poisson fitted on finished matches. The hard part was never the statistics. It was getting the thing onto a page that costs me nothing and exposes nothing. Here's what I ended up with, and why the obvious approaches don't work. Three options that all fail Call the API fr...

TL;DR talus-process-monitor is an eBPF-based ransomware detector for Linux: it traces execve / openat from the kernel, streams events over per-CPU perf buffers, and flags behavioural patterns — mass file rewrites plus extension churn — in real time. The hard part is not the tracing; it's scoring patterns without crying wolf on every cargo build . Why behaviour, not signatures Signature detection on Linux ransomware is nearly useless — most samples are short-lived, often sc...

TL;DR Working on talus-process-monitor (Rust userspace + libbpf/C eBPF) I kept bumping into the same three walls: CO-RE field offsets shifting between kernel versions, the verifier refusing anything that looks like an unbounded loop, and map access patterns that get rejected at load time. All three are design constraints, not compiler annoyances. This post is what changed in my approach once I stopped fighting them. CO-RE relocation is a promise you have to verify Portable ...

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Enterprise AI spend is on track to hit $407B, yet 95% of gen AI pilots fail to move the P&L. Why the AI gold rush rewards discipline over hype.

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