Which platforms can this skill update model strings for?

It supports the Anthropic API (1P), AWS Bedrock, Google Vertex AI, and Azure AI Foundry.

Will it automatically change my prompt logic?

By default, it only updates model strings. It only applies behavioral prompt fixes (like over-engineering prevention) if specifically requested or if issues are reported.

Does this skill support Haiku 4.5 migration?

No, this specific skill is designed for migrating from Sonnet 4.0, Sonnet 4.5, or Opus 4.1 to Opus 4.5. It explicitly excludes Haiku models.

How does it handle the 1M context beta header?

The skill removes the 'context-1m-2025-08-07' beta header as it is currently unsupported with Opus 4.5, adding a code comment to notify the developer.

What is 'thinking sensitivity' in Opus 4.5?

When extended thinking is disabled, Opus 4.5 can be sensitive to the word 'think.' This skill replaces such terms with alternatives like 'consider' to maintain prompt stability.

Claude Opus 4.5 Migration

Name: Claude Opus 4.5 Migration
Author: Microck

byMicrock

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Developer Tools

Automates the migration of codebases and prompts from previous Claude models to the high-performance Opus 4.5 architecture.

This skill facilitates a seamless transition to Claude Opus 4.5 by identifying and updating model strings across major platforms including the Anthropic API, AWS Bedrock, Google Vertex AI, and Azure AI Foundry. Beyond simple text replacement, it applies sophisticated prompt adjustments to manage Opus 4.5's unique behavioral nuances—such as tool over-triggering, over-engineering tendencies, and 'thinking' sensitivity—ensuring your migrated applications remain efficient and reliable while leveraging the latest model capabilities.

Key Features

01Automated removal of unsupported beta headers and configuration of effort parameters

0281 GitHub stars

03Multi-platform model string updates for Anthropic, AWS, Google, and Azure

04Specialized snippets to enhance frontend design and code exploration behaviors

05Intelligent prompt softening to prevent tool over-triggering and unnecessary abstractions

06Context-aware 'thinking' keyword replacement for non-extended thinking requests

Use Cases

01Refining legacy prompts to mitigate behavioral shifts in the newest Opus model

02Standardizing AI model identifiers across hybrid-cloud deployments

03Upgrading enterprise codebases from Sonnet 4.0 or 4.5 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