What problem does it solve? Teams repeatedly rediscover the same useful open-source libraries during code reviews, but that knowledge is lost between sessions. This Skill records a library and the hand-rolled code it replaces into the refactor skill's catalog so every future OSS review checks for it automatically. ## Core Features & Use Cases - Catalog Discovery: Locates the oss-libraries.md catalog inside the installed refactor skill, checking the sibling directory first and then globbing the agent's skill trees. - Structured Entries: Formats each entry as the package name plus the specific hand-rolled code it retires, inferring the retired code from conversation context or the package's documentation. - Deduplication and Organization: Places entries in the correct ecosystem section, creating new sections when needed and sharpening existing lines instead of duplicating them. - Use Case: After a review reveals that a custom date-parsing utility could be replaced by a mature package, record that package in the catalog so all future reviews flag similar hand-rolled implementations. ## Quick Start Use the record-library skill to record this package and the hand-rolled code it replaces in the refactor catalog.