Claude Code plugin learns from your mistakes automatically
Original: The best of its kind out there!
Source: x.com ↗
Who: Posted by @odysseus0z (identity not further known) sharing a project by @yyyiiillluuu, the creator of claude-smart, an open-source tool built under the ReflexioAI account.
What's new: A free, locally-run plugin called claude-smart lets learn from its own mistakes across sessions. Rather than forgetting everything when a task ends, it writes down what went wrong and turns that into a concrete rule for next time — automatically, without sending any data to a third party.
How it works: After each coding session, claude-smart reviews what did and distills specific, reusable lessons. The example in the announcement is instructive: if a test command hangs because it defaults to watch mode, a raw memory note just records "it hung," while claude-smart produces an actionable rule — always add the flag that disables watch mode in this particular project. Those rules carry over to future projects, not just the one where the mistake happened. Installation is a single terminal command, and it also supports .
The numbers: The creator claims claude-smart can cut unnecessary back-and-forth planning steps and use by more than 70 percent on tasks similar to ones already seen.
Caveats: These figures come from the tool's own author with no independent verification. The 70 percent reduction claim is striking and worth treating skeptically until others reproduce it. The tool's usefulness also depends entirely on how good Claude Code already is at a given task — it improves on experience, but it cannot manufacture experience it has not had.