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Deprecation and Migration

Skill

Retire old APIs and features safely, including zero-downtime schema changes.

by addyosmaniCoding & Dev Tools Listed Feb 15, 2026

Clone or download it from github.com, then drop the folder into ~/.claude/skills/ (Claude Code) or your agent's skills directory.

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About Deprecation and Migration

From Addy Osmani's agent-skills pack.

For the unglamorous half of engineering: removing code. The agent helps decide whether something is worth keeping, plans how to move users from the old path to the new one, and handles production schema changes like renaming or dropping a column with an expand-then-contract approach so nothing breaks mid-migration.

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