Claude Opus 4.5 Migration

by LING71671

Claude Opus 4.5 Migration is an AI Engineering skill for Claude Code, published by LING71671 in Open-ClaudeCode.

945 stars1.2K forkson LING71671/Open-ClaudeCodeAdded 2026/08/21Repository updated 2026/07/22

View source on GitHub Download repo ZIP

ai-coding-assistantanthropicclaude-codedeveloper-toolsresearchreverse-engineeringsource-mapstypescript

Install in seconds

Install Claude Opus 4.5 Migration

Copy Claude Opus 4.5 Migration into your Claude Code skills folder. Run the command in your terminal, or review the source on GitHub before installing.

terminal

npx degit https://github.com/LING71671/Open-ClaudeCode/tree/main/plugins/claude-opus-4-5-migration/skills/claude-opus-4-5-migration ~/.claude/skills/claude-opus-4-5-migration

Requires Node.js. Downloads this skill only — not the rest of the repository — into your Claude Code skills folder.

Without Node.js

git clone https://github.com/LING71671/Open-ClaudeCode.git

Clones the whole repository, then copy the skill’s own directory into your skills folder yourself.

In this catalog

Source file: plugins/claude-opus-4-5-migration/skills/claude-opus-4-5-migration/SKILL.md in LING71671/Open-ClaudeCode
Installs to: ~/.claude/skills/claude-opus-4-5-migration
Collection: One of 15 skills cataloged from this repository
Category: AI Engineering — 2451 skills

What Claude Opus 4.5 Migration does

Claude Opus 4.5 Migration updates prompts and code from Sonnet 4.0, Sonnet 4.5, or Opus 4.1 to Opus 4.5. It changes model strings, removes unsupported beta headers, and can adjust prompts for known behavior differences.

Claude Opus 4.5 Migration is cataloged under AI Engineering on DirSkills. Claude Opus 4.5 Migration comes from a repository tagged ai-coding-assistant, anthropic, claude-code, developer-tools and research.

Documentation

README

Excerpt

Opus 4.5 Migration Guide

One-shot migration from Sonnet 4.0, Sonnet 4.5, or Opus 4.1 to Opus 4.5.

Migration Workflow

Search codebase for model strings and API calls
Update model strings to Opus 4.5 (see platform-specific strings below)
Remove unsupported beta headers
Add effort parameter set to "high" (see references/effort.md)
Summarize all changes made
Tell the user: "If you encounter any issues with Opus 4.5, let me know and I can help adjust your prompts."

Model String Updates

Identify which platform the codebase uses, then replace model strings accordingly.

Unsupported Beta Headers

Remove the context-1m-2025-08-07 beta header if present—it is not yet supported with Opus 4.5. Leave a comment noting this:

This is the opening of the README. Read the full README on GitHub.

Frequently asked about Claude Opus 4.5 Migration

What else does LING71671 publish alongside Claude Opus 4.5 Migration?
Claude Opus 4.5 Migration is one of 15 skills that DirSkills catalogs from LING71671/Open-ClaudeCode, the repository it ships in. Its siblings there include Agent Development, Command Development and Document Release. Each one is a separate skill with its own page in this directory, installs the same way Claude Opus 4.5 Migration does, and is maintained by LING71671 in that same repository. The rest of the collection is listed on the LING71671/Open-ClaudeCode page.
How does Claude Opus 4.5 Migration compare to other AI Engineering skills?
Claude Opus 4.5 Migration ranks #1436 by stars among the 2451 AI Engineering skills in this catalog. The most-starred ones next to it are Architecture Decision Records, AI-First Engineering and Agentic OS. DirSkills ranks by the star count of the repository each skill ships in, so that order reflects how popular those repositories are rather than any review of Claude Opus 4.5 Migration against them. Open each page to compare what they document and how they install.