Simon Willison • 1/11/2026

A Software Library with No Code

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The article discusses an experimental library called 'whenwords' for time formatting. It contains no traditional code, only a specification, an AGENTS.md file, and YAML conformance tests. Developers can use AI coding agents to generate the library's implementation in any required language, highlighting the power of language-independent tests and modern AI tools.

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#ai code generation #LLM Agents #Software Libraries
A Software Library with No Code

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