Which models are supported for migration to Opus 4.5?

This skill supports migration from Claude Sonnet 4.0, Claude Sonnet 4.5, and Claude Opus 4.1.

Which cloud platforms does it handle?

It provides the correct model identifiers for the Anthropic API (1P), AWS Bedrock, Google Vertex AI, and Azure AI Foundry.

Does this skill migrate Claude Haiku models?

No, this skill explicitly excludes Haiku 4.5 and other Haiku versions to ensure lightweight tasks are not accidentally moved to the high-cost Opus model.

What behavioral changes does it fix in prompts?

It helps adjust prompts that cause tool overtriggering, over-engineering of solutions, or issues related to 'thinking' sensitivity when extended thinking is not enabled.

Claude Opus 4.5 Migration Tool

Name: Claude Opus 4.5 Migration Tool
Author: Activer007

byActiver007

•

Cloud Infrastructure

Migrates codebases and prompts from previous Claude models to the latest Opus 4.5 architecture across multiple cloud platforms.

This skill facilitates a seamless transition for applications moving from Claude Sonnet 4.0, 4.5, or Opus 4.1 to the flagship Claude Opus 4.5 model. It automatically identifies and updates model identifiers for the Anthropic API, AWS Bedrock, Google Vertex AI, and Azure AI Foundry, while ensuring unsupported beta headers are removed. Beyond simple string replacement, the skill provides specific prompt engineering adjustments to mitigate behavioral differences in Opus 4.5, such as tool overtriggering, over-engineering tendencies, and 'thinking' sensitivity, ensuring your integration remains robust and efficient.

Key Features

01Platform-aware model string updates for Anthropic, AWS, Google, and Azure

025 GitHub stars

03Behavioral prompt adjustments to prevent tool overtriggering and over-engineering

04Configuration of 'high' effort parameters for complex reasoning tasks

05Automated removal of unsupported beta context headers

06Contextual optimization for code exploration and frontend design prompts

Use Cases

01Updating legacy API integration code and configuration files

02Fine-tuning system prompts to resolve behavioral regressions in newer model versions

03Upgrading production AI applications to leverage Claude Opus 4.5 reasoning

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add activer007/ordinary-claude-skills claude-opus-4-5-migration

For use in Claude.ai and ChatGPT

Download Skill