Dev notes from the maintainer of Puppeteer-Sharp. I write about browser automation, .NET, and teaching computers to do the boring parts.

Recent posts

1. Oct 6, 2026 Meet Playwright Claude Mod, Your Test Results Inside Claude Code
2. Sep 9, 2026 Moving from stable worktrees to CoW, will that work?
3. Sep 6, 2026 I Connected Quicken to My AI Agent

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Projects

Puppeteer-Sharp is a C# port of Google’s Puppeteer — a headless Chrome API for .NET. 36M+ NuGet downloads, still shipping. That’s the flagship. Everything else on this site is notes from building it, porting Playwright, and the agents that came after.

• Playwright for .NET Started as Playwright-Sharp. Went to Microsoft and became the official library.
• UI Testing with Puppeteer The book. End-to-end automation with the real browser.
• cronito A small tool for scheduling work with coding agents.

About

I’m Darío Kondratiuk, a software developer from Buenos Aires. 25 years teaching computers how to use the software we write — ORMs, browser automation, now AI agents that author and repair tests at mabl.

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