claude-opus-4-5-migration — Skills

What it does

Use XML tags (e.g., <codeguidelines>, <toolusage>) to organize additions

Match the style and structure of the existing prompt

Place snippets in logical locations (e.g., coding guidelines near other coding instructions)

If the prompt already uses XML tags, add new content within appropriate existing tags or create consistent new ones

CRITICAL: → remove or soften

You MUST... → You should...

ALWAYS do X → Do X

claude opus 4 5 migration

Source

Repository: https://github.com/anthropics/claude-code

claude-opus-4-5-migration FAQ

What does the claude-opus-4-5-migration skill do?

Migrate prompts and code from Claude Sonnet 4.0, Sonnet 4.5, or Opus 4.1 to Opus 4.5. Use when the user wants to update their codebase, prompts, or API calls to use Opus 4.5. Handles model string updates and prompt adjustments for known Opus 4.5 behavioral differences. Does NOT migrate Haiku 4.5. Use XML tags (e.g., <codeguidelines>, <toolusage>) to organize additions Match the style and structure of the existing prompt

What does claude-opus-4-5-migration require?

Configuration keys: CRITICAL, ALWAYS, NEVER, REQUIRED.

How do I install claude-opus-4-5-migration?

Run: npx -y skills add https://github.com/anthropics/claude-code --skill claude-opus-4-5-migration --agent claude-code — the source lives at github.com/anthropics/claude-code.

Maintain claude-opus-4-5-migration?

Let people know it's listed here — add the badge (live metrics, light/dark aware) or a plain link to your README or docs.

[![claude-opus-4-5-migration on getagentictools](https://getagentictools.com/badge/skills/anthropics-claude-code-claude-opus-4-5-migration.svg)](https://getagentictools.com/skills/anthropics-claude-code-claude-opus-4-5-migration?ref=badge)

npx agentictools info skills/anthropics-claude-code-claude-opus-4-5-migration

The second line is the CLI lookup for this page — handy in READMEs and docs.