Explainers
Claude Code hygiene
You know what you load on every request, you turn off what you don’t use, and you move hard rules into permissions: the monthly routine, with measurements from my setup and a prompt that does the inventory for you.
Collection
Claude Code, taken apart (and rebuilt)
I’m specializing in the Claude Code harness: the program around the model. This is where I put every test, with the measurements and the version.
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Security
Using AI agents? You’re at risk: the prompt that keeps you safe
A flaw in the Brotli library, inside Node.js and Bun, can crash AI agents and might let attackers run code. Since October 27, CISA has listed it as exploited. You need Node 22.23.4, 24.22.1, or 26.12.1 (or later on the same release line), Bun 1.4.4, and Claude Code 2.1.308.
Tutorial · Tools
Turn off auto-compaction in Claude Code
Two keys in settings.json turn off auto-compaction and idle compaction: you run compaction yourself when you need to.
Explainers
Auto-compaction is a colossal piece of crap
After compaction, an agent broke an explicit constraint in 30 runs out of 100, compared with 0 before (Wang et al., July 2026): the summary keeps the task and loses the rails.