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Deprecate

Category: Engineering  ·  Sub-category: code-quality  ·  Last updated:
Manage deprecation and migration of old systems, APIs, or features. Use when removing legacy code, sunsetting features, consolidating duplicate implementations, or planning the lifecycle of a new system. Don't use for one-off refactors (use `refactor-plan`), in-flight code simplification, or removing dead code with zero callers (just delete it).

From the source SKILL.md

Code is a liability, not an asset. Every line carries ongoing cost: tests, docs, security patches, dependency updates, mental overhead. Deprecation is the discipline of removing code that no longer earns its keep. Migration is the process of moving users safely from the old to the new.

What this skill does

Deprecate is a community-contributed Claude Code skill in the code-quality sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/deprecate/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when removing legacy code, sunsetting features, consolidating duplicate implementations, or planning the lifecycle of a new system. Don't use for one-off refactors (use `refactor-plan`), in-flight code simplification, or removing dead code with zero callers (just delete it).

Who uses this skill

The Deprecate Claude Code skill is built for software engineers, backend developers, full-stack teams, and technical leads building and maintaining production systems. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 69,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/deprecate
curl -L https://claudskills.com/skills/deprecate/SKILL.md \
  -o ~/.claude/skills/deprecate/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/deprecate/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/deprecate/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\deprecate\SKILL.md on Windows. See the full install guide for step-by-step instructions.

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Attribution & license

More Engineering skills

Browse all Engineering skills in the ClaudSkills registry, or explore these other picks from the same category:

Browse all Engineering skills → Top 100 skills
Part of ClaudSkills — the open registry for Claude Skills & Claude Code Skills.  ·  What's New  ·  Install guide  ·  About  ·  llms.txt

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