How does it handle behavioral differences in Opus 4.5?

It provides optional prompt adjustments to mitigate issues like tool overtriggering, over-engineering, and 'thinking' sensitivity when extended thinking is disabled.

Which platforms are supported for model string updates?

The skill supports model string updates for the native Anthropic API, AWS Bedrock, Google Vertex AI, and Azure AI Foundry.

Does this skill migrate Claude Haiku models?

No, this skill is specifically designed for migrations to Opus 4.5 and explicitly excludes Haiku 4.5 migration tasks.

What is the 'effort' parameter mentioned in the migration?

Opus 4.5 supports an 'effort' parameter to control reasoning depth; this skill defaults to 'high' for migration tasks to ensure maximum accuracy.

Claude Opus 4.5 Migration Helper

Name: Claude Opus 4.5 Migration Helper
Author: Microck

byMicrock

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Cloud Infrastructure

Automates the transition of codebases and prompts from legacy Claude models to the Claude 3 Opus 4.5 architecture.

This skill provides a comprehensive workflow for upgrading AI-integrated applications to Claude Opus 4.5. It automatically identifies and replaces legacy model strings across multiple platforms—including the Anthropic API, AWS Bedrock, Google Vertex AI, and Azure AI Foundry—while removing deprecated beta headers. Beyond simple updates, the skill offers specialized logic to refine system prompts, addressing Opus 4.5's unique behavioral characteristics such as tool overtriggering, over-engineering tendencies, and sensitivity to 'thinking' parameters, ensuring a stable and optimized migration.

Key Features

01Targeted snippets for code exploration and frontend design optimization

02Automatic configuration of the 'high' effort parameter for complex tasks

03Intelligent prompt softening to prevent tool overtriggering

04Removal of unsupported context-1m-2025-08-07 beta headers

05Automated model string replacement for 1P, Bedrock, Vertex, and Azure platforms

0689 GitHub stars

Use Cases

01Standardizing model identifiers across a multi-cloud (AWS/GCP) AI architecture

02Fine-tuning prompt behavior after experiencing over-engineering issues with newer models

03Upgrading an enterprise application from Claude 3.5 Sonnet to Opus 4.5

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add microck/ordinary-claude-skills claude-opus-4-5-migration

For use in Claude.ai and ChatGPT

Download Skill