> frequently have Claude act as a "toolsmith", creating bespoke project-specific tools on the fly, which are then documented in Skills that Claude can use going forward.

I also do this.

e.g. after watching Claude burn tokens building and then deploying a docker image multiple times (and it taking extra time), I asked it to just create a build.and.deploy.sh script. I also then have a test.deploy.sh script that Claude can use to confirm everything worked.

Saves a ton of time/tokens AND has the added benefit of being usable by me or other humans when doing manual tests or debugging outages etc.