{ Mario Zechner } https://mariozechner.at Musings from an old computer guy. I've sold out https://mariozechner.at/posts/2026-04-08-ive-sold-out I've sold out Wed, 08 Apr 2026 00:00:00 GMT Thoughts on slowing the fuck down https://mariozechner.at/posts/2026-03-25-thoughts-on-slowing-the-fuck-down Thoughts on slowing the fuck down Wed, 25 Mar 2026 00:00:00 GMT Year in Review 2025 https://mariozechner.at/posts/2025-12-22-year-in-review-2025 A look back at 2025 Mon, 22 Dec 2025 00:00:00 GMT What I learned building an opinionated and minimal coding agent https://mariozechner.at/posts/2025-11-30-pi-coding-agent Lessons I learned while building my own coding agent from scratch. Sun, 30 Nov 2025 00:00:00 GMT Armin is wrong and here's why https://mariozechner.at/posts/2025-11-22-armin-is-wrong A rambling rebuttal to Armin's claim that LLM APIs are a state synchronization problem. Sat, 22 Nov 2025 00:00:00 GMT What if you don't need MCP at all? https://mariozechner.at/posts/2025-11-02-what-if-you-dont-need-mcp Got Bash and some code interpreter? Skip MCP. Sun, 02 Nov 2025 00:00:00 GMT Infinite Footguns: Writing a JavaScript Interpreter in JavaScript https://mariozechner.at/posts/2025-10-05-jailjs Building a JavaScript AST interpreter in JavaScript: scope isolation, ES5 implementation, and all the footguns along the way. Sun, 05 Oct 2025 00:00:00 GMT MCP vs CLI: Benchmarking Tools for Coding Agents https://mariozechner.at/posts/2025-08-15-mcp-vs-cli A data-driven comparison of MCP and CLI approaches for coding agent terminal control Fri, 15 Aug 2025 00:00:00 GMT Patching Claude Code for debugging and /cost support for Max users https://mariozechner.at/posts/2025-08-06-cc-antidebug cc-antidebug patches Claude Code to enable Node.js debugger support for SDK-based apps and restores the /cost command functionality for Max plan users Wed, 06 Aug 2025 00:00:00 GMT cchistory: Tracking Claude Code System Prompt and Tool Changes https://mariozechner.at/posts/2025-08-03-cchistory Exploring how to track and analyze changes in Claude Code's system prompts and tools to understand AI assistant evolution Sun, 03 Aug 2025 00:00:00 GMT Prompts are code, .json/.md files are state https://mariozechner.at/posts/2025-06-02-prompts-are-code Treating LLMs as shitty general purpose computers we program with natural language. Because throwing shit at the wall wasn't working anymore. Mon, 02 Jun 2025 00:00:00 GMT Boxie - an always offline audio player for my 3 year old https://mariozechner.at/posts/2025-04-20-boxie How I built a simple portable audio player for my boy, summoning the spirit of the Gameboy Sat, 26 Apr 2025 00:00:00 GMT Electronic Nights III - Animated LEDs and Buttons https://mariozechner.at/posts/2024-08-22-electronic-nights-3 How to programmatically turn on LEDs and read button states Thu, 22 Aug 2024 00:00:00 GMT Electronic Nights II - Basic Circuits https://mariozechner.at/posts/2024-08-05-electronic-nights-2 Exploring the absolute basics. Mon, 05 Aug 2024 00:00:00 GMT Electronic Nights I - Getting Started https://mariozechner.at/posts/2024-07-25-electronic-nights-1 The story of a programmer trying to electronics Fri, 26 Jul 2024 00:00:00 GMT macOS code injection for fun and no profit https://mariozechner.at/posts/2024-07-20-macos-code-injection-fun Fun little vacation project for fun and zero profit. Sat, 20 Jul 2024 00:00:00 GMT Two years in review https://mariozechner.at/posts/2024-07-15-two-years-in-review Reminiscing about the times I didn't watch TV at night but built stuff. Mon, 15 Jul 2024 00:00:00 GMT Dissecting history https://mariozechner.at/posts/2024-07-14-dissecting-history Thoughts on acquiring computational thinking skills based on my own experience. Sun, 14 Jul 2024 00:00:00 GMT