Interactive explanations
When AI agents write code for us, we accumulate "cognitive debt" - we lose understanding of how our own systems work. Simon Willison explores using interactive explanations as a method to pay down...
Personal AI Infrastructure v4.0 - Hierarchical Skills & Upgrade Improvements
Personal AI Infrastructure v4.0 introduces a major reorganization with hierarchical skill categories replacing the previous flat structure, along with improved upgrade documentation and temperature...
Claude Code v2.1.63 Release Notes
Claude Code v2.1.63 delivers significant improvements to memory management and developer workflow efficiency. The release fixes numerous memory leaks that plagued long-running sessions while adding...
Please, please, please stop using passkeys for encrypting user data
Security experts are warning against using passkeys for data encryption because users frequently lose their passkeys, creating a fundamental conflict between authentication security and data...
An AI agent coding skeptic tries AI agent coding, in excessive detail
Max Woolf, a former AI coding skeptic, documents his journey testing coding agents on increasingly ambitious projects. His experience reveals that modern AI agents can tackle complex, multi-month...
Free Claude Max for (large project) open source maintainers
Anthropic is offering their premium Claude Max plan free to open source maintainers for six months, targeting developers of large projects with 5,000+ GitHub stars or 1M+ monthly NPM downloads. This...
Unicode Explorer using binary search over fetch() HTTP range requests
Simon Willison built a Unicode character lookup tool that demonstrates how HTTP range requests enable efficient binary search over large remote files without downloading the entire dataset. The tool...