Show HN: Cog — Plain-Text Cognitive Architecture Gives Claude Code Persistent Memory and Self-Reflection

Marcio Puga / Hacker News·medium signal

Cog is not a library — it's a set of plain-text conventions in CLAUDE.md that teach Claude Code to build and maintain its own persistent memory using Unix tools (grep, find, git diff) it already knows. No server, no runtime, no application code. Skill files in .claude/commands/ teach specific workflows: reflection, foresight, housekeeping, and self-evolution. At 143 points and 49 comments on HN, the 'cognitive architecture as text files' approach resonated strongly with the Claude Code community.