Which platforms can this skill update model strings for?

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

How does it handle the new 'Thinking' sensitivity in Opus 4.5?

If extended thinking is not enabled, the skill identifies sensitive words like 'think' and replaces them with alternatives like 'consider' or 'evaluate' to prevent unintended model behavior.

Does this skill support migrating Haiku models?

No, this migration skill specifically targets transitions from Sonnet 4.0, 4.5, and Opus 4.1 to Opus 4.5. Haiku models are explicitly excluded from the migration logic.

Will it automatically change my prompt logic?

By default, the skill only updates model strings and headers. It only applies prompt behavioral adjustments (like softening tool-triggering language) if you explicitly request them or report specific issues.

Claude Opus 4.5 Migration Tool

Name: Claude Opus 4.5 Migration Tool
Author: DennisLiuCk

byDennisLiuCk

Developer Tools

Automates the transition of codebases and prompts from legacy Claude models to the Claude 3.5 Opus model.

About

The Claude Opus 4.5 Migration skill streamlines the process of upgrading your existing applications and prompts from Sonnet 4.0, Sonnet 4.5, or Opus 4.1 to the latest Claude 3.5 Opus model. It intelligently identifies platform-specific model strings across Anthropic API, AWS Bedrock, Google Vertex AI, and Azure AI Foundry, handles the removal of unsupported beta headers, and provides sophisticated prompt tuning to manage behavioral differences such as tool over-triggering and thinking sensitivity. This skill ensures your transition to Opus 4.5 is technically accurate while maintaining the performance and reliability of your AI-driven features.

Key Features

Strategic prompt softening to prevent tool over-triggering in Opus 4.5.
Automatic removal and documentation of unsupported 1M context beta headers.
Optimization snippets for frontend design, code exploration, and preventing over-engineering.
0 GitHub stars
Smart 'Thinking Sensitivity' adjustments for non-extended thinking API requests.
Multi-platform model string replacement for Anthropic, AWS Bedrock, Google Vertex AI, and Azure.

Use Cases

Batch updating API configurations to include required effort parameters for high-complexity tasks.
Refactoring legacy system prompts to align with the new behavioral nuances of the Opus 4.5 model.
Upgrading enterprise AI applications from Sonnet to Claude 3.5 Opus across different cloud providers.

About

Key Features

Strategic prompt softening to prevent tool over-triggering in Opus 4.5.
Automatic removal and documentation of unsupported 1M context beta headers.
Optimization snippets for frontend design, code exploration, and preventing over-engineering.
0 GitHub stars
Smart 'Thinking Sensitivity' adjustments for non-extended thinking API requests.
Multi-platform model string replacement for Anthropic, AWS Bedrock, Google Vertex AI, and Azure.

Use Cases

Batch updating API configurations to include required effort parameters for high-complexity tasks.
Refactoring legacy system prompts to align with the new behavioral nuances of the Opus 4.5 model.
Upgrading enterprise AI applications from Sonnet to Claude 3.5 Opus across different cloud providers.