see https://simonwillison.net/2025/Dec/14/justhtml/

and https://friendlybit.com/python/writing-justhtml-with-coding-agents/

and https://simonwillison.net/2025/Dec/15/porting-justhtml/

very impressive. for the porting, just a few prompts. and the coding agent works several hours.

see also https://simonwillison.net/2025/Sep/30/designing-agentic-loops/.

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