What happens to my beta headers during migration?

The skill automatically removes the context-1m-2025-08-07 beta header as it is currently unsupported with Opus 4.5, adding a comment for developer awareness.

Which models can I migrate from using this skill?

This skill supports migrating from Claude Sonnet 4.0, Sonnet 4.5, and Opus 4.1. It is not intended for Haiku model migrations.

How does it handle behavioral changes in Opus 4.5?

It provides optional prompt adjustments for issues like tool over-triggering, over-engineering, and 'thinking' sensitivity, applying them only when relevant to the user's needs.

Does it support cloud platforms like AWS and Google Cloud?

Yes, it handles specific model string formats for AWS Bedrock, Google Vertex AI, Azure AI Foundry, and the standard Anthropic API.

Claude Opus 4.5 Migration Assistant

Name: Claude Opus 4.5 Migration Assistant
Author: Microck

byMicrock

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Cloud Infrastructure

Streamlines the transition of codebases and prompts from legacy Claude models to the high-performance Opus 4.5 architecture.

About

This skill facilitates a seamless one-shot migration from Claude Sonnet 4.0, Sonnet 4.5, or Opus 4.1 to the Opus 4.5 model. It automates the updating of model strings across various platforms including Anthropic API, AWS Bedrock, Google Vertex AI, and Azure AI Foundry. Beyond simple string replacement, it intelligently adjusts system prompts to mitigate known Opus 4.5 behavioral patterns such as tool over-triggering, over-engineering, and conservative code exploration, ensuring your AI integration remains efficient and effective.

Key Features

89 GitHub stars
Automatic configuration of high-effort parameters for complex logic
Automated model string replacement for 1P, Bedrock, Vertex AI, and Azure
Snippet injection for better frontend design and code exploration
Removal of unsupported beta headers with legacy context markers
Intelligent prompt softening to prevent tool over-triggering

Use Cases

Upgrading an existing application backend from Sonnet 4.0 to Opus 4.5
Optimizing agentic prompts that call tools too frequently on newer models
Standardizing multi-cloud AI deployments for the latest Anthropic model release

About

Key Features

89 GitHub stars
Automatic configuration of high-effort parameters for complex logic
Automated model string replacement for 1P, Bedrock, Vertex AI, and Azure
Snippet injection for better frontend design and code exploration
Removal of unsupported beta headers with legacy context markers
Intelligent prompt softening to prevent tool over-triggering

Use Cases

Upgrading an existing application backend from Sonnet 4.0 to Opus 4.5
Optimizing agentic prompts that call tools too frequently on newer models
Standardizing multi-cloud AI deployments for the latest Anthropic model release