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TIL Claude's new code interpreter mode has a /mnt/skills/public/ folder full of prompt instructions and Python utilities for creating and manipulating pdf, docx, pptx, xlsx files - and you can ask Claude for a copy and learn a TON about working with those formats simonwillison.net/2025/Oct/10/...

simonwillison.netsimonw/claude-skillsOne of the tips I picked up from Jesse Vincent's Claude Code Superpowers post (previously) was this: Skills are what give your agents Superpowers. The first time they really popped …

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At first I thought you were referring to some examples that get downloaded with claude code to linux, but it's literally the internal directory contents of the running chat instantiation (?!) It's just so neat we can even do stuff like this, thanks again for these tips

thank you! It's hard not to get immediately almost philosophical at the incredible pace of advancement, not just at the LLM level but the use case level, the downstream applications via Simon et al using only claude.md files you can create an expert with deep specific, targeted skills. crazy.