Blume

Blume is a desktop sidecar app that watches your coding agent sessions — Claude Code, Codex, Cursor, and others — and extracts what you keep correcting. Repeated corrections become rules, recurring workflows become skills, and your agents stop making the same mistakes.

The app runs entirely locally: no chats or code leave your machine. Blume clusters corrections thematically, and when a pain threshold or recurrence pattern is reached, it proposes a concrete update to your agent setup — a stale rule, a missing hook, or a new skill. You review the diff, then approve or dismiss.

Blume also tracks usage across Claude, Codex, and Cursor plan limits, shows every agent's current status and the hidden files guiding its behavior, and surfaces analytics on whether your setup is improving or degrading over time. Free to use on macOS, Linux, and Windows.