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How I wrote JustHTML using coding agents

friendlybit.com

I recently released JustHTML, a python-based HTML5 parser. It passes 100% of the html5lib test suite, has zero dependencies, and includes a CSS selector...

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The Architect vs Implementer Split in AI Native Development

When agents handle implementation, experienced engineers shift from typing code to architectural guidance. The division is about what gets delegated and what requires human judgment.

0 inbound links article en posts blogdeveloperpersonalengineeringsoftwaresystemsAIAgentsArchitectureDevelopment PatternsTask Decomposition CC BY-NC-SA 4.0
Yulqen

An intentionally quiet and unassuming (and empty) blog

I ported JustHTML from Python to JavaScript with Codex CLI and GPT-5.2 in 4.5 hours

I wrote about JustHTML yesterday—Emil Stenström’s project to build a new standards compliant HTML5 parser in pure Python code using coding agents running against the comprehensive html5lib-tests testing library. Last …

1 inbound link article en html 96javascript 755python 1250ai 2024generative-ai 1791llms 1757ai-assisted-programming 383gpt-5 30codex 48november-2025-inflection 14vibe-porting 8gpt 124
Weakly Link 25/51

This week we’re looking through a mix of security and AI once more. Because tech is nothing but those two topics, right? Right? Anyway, I am often travelling on the train or stay in hotels these days, I find myself working on public wifis. Of course, one look on LinkedIn will immediately warn you of the dangers of public wifi. Seemingly, as soon as you connect a hacker will automatically steal your credit cards.

0 inbound links article en posts
I ported JustHTML from Python to JavaScript with Codex CLI and GPT-5.2 in 4.5 hours

I wrote about JustHTML yesterday—Emil Stenström’s project to build a new standards compliant HTML5 parser in pure Python code using coding agents running against the comprehensive html5lib-tests testing library. Last …

17 inbound links article en html 96javascript 755python 1250ai 2023generative-ai 1790llms 1756ai-assisted-programming 383gpt-5 30codex 48november-2025-inflection 14vibe-porting 8gpt 124
JustHTML is a fascinating example of vibe engineering in action

I recently came across JustHTML, a new Python library for parsing HTML released by Emil Stenström. It’s a very interesting piece of software, both as a useful library and as …

4 inbound links article en html 96python 1250ai 2023generative-ai 1790llms 1756ai-assisted-programming 383vibe-coding 91coding-agents 202conformance-suites 10
HTML parsers in Portland

A small exploration of weird results when AI coding agents translate an HTML parser into different languages. 2000 words - 10 minutes

Porting an HTML5 Parser to Swift

How I built swift-justhtml with Claude - from 0% to 100% html spec test compliance, finding crash bugs with fuzzing, and the performance optimization needed to match javascript's speed in Swift

1 inbound link article en parsinghtml5swiftperformancellmaihtmlClaude Codeparsinghtml5swiftperformancellmaihtmlClaude Code