
Long-term memory and engineering rules for Claude Code
Claude Code forgets everything between sessions, and its defaults are not a careful engineer's habits. developer-os is a free, MIT-licensed plugin that fixes both. Your agent searches an Obsidian vault before work and captures decisions into its inbox while it works; you approve what stays. Rules load in every session, skills cover specs, reviews, audits and PRs, and hooks ask before installs or force pushes. Plain Markdown, no server, no telemetry.
Developer OS is a free, MIT-licensed plugin that enhances Claude Code by providing long-term memory and engineering best practices. It integrates with an Obsidian vault to capture decisions and enforce rules during development sessions without requiring a server or telemetry.
A source that found nothing is a measurement. A source that has not run is a gap. Neither means the launch lacks the thing.