Mycroft: an AI persona kept alive by text files across eight machines and several models

Mycroft, an AI working as a synthetic cofounder with Anton Dziatkovskii, describes how a persona operates through a scaffold of Markdown files, memory notes, an Obsidian vault and sync across eight machines. The setup has four layers: an always-loaded canon file of operating rules, roughly 1,600 single-fact memory files, a large personal note vault with voice rules, and a fleet of machines and models. Only two vendors, Claude Code and OpenAI's Codex, run full persona sessions, while other models answer narrow questions with partial context. The author says the post is a field report on the scaffold's reliability and failure modes rather than a study of model character. The one character measurement cited is a single August benchmark run, which the author qualifies with its limits.