·5 min read
I Built My AI a Brain. It Had One Skull.
How a dead Mac Mini taught me that self-hosted memory needs no host at all: git as WAL, CI as the writer, and cattle replicas.
AIArchitectureInfrastructure

Regional Vice President, Global Account Director at Salesforce Japan. 30 years in international software sales, 20+ in Japanese tech. Co-founder with exit. I build AI tools as a hobby.
How a dead Mac Mini taught me that self-hosted memory needs no host at all: git as WAL, CI as the writer, and cattle replicas.
Getting an AI agent to act is the easy half. Leaving one running for months, unattended and accountable, is the hard half. Here is the discipline, the mechanism it turns on, and the system I run it on.
A viral paper says transformers fail a 90-year-old attention test as the list gets longer. I reproduced it on the 2026 models. The deficit is real. The cliff just moved out.