Medium: https://medium.com/@itsamruth/stop-burning-tokens-how-to-use...

I built subagent-reuse after noticing that Claude Code subagents often re-read the same files and rebuild the same context from scratch.

It scans Claude’s local session storage, tracks which files each subagent has already read or modified, and routes new work to an existing agent when there’s enough overlap. It also warns when files have changed since that agent last saw them.