Does it support the 1M context window beta header?

The skill identifies and removes the 1M context beta header because it is not yet supported with Opus 4.5, ensuring your API calls remain functional.

How does this skill handle behavioral differences in Opus 4.5?

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

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

Opus 4.5 supports an effort parameter; this skill sets it to 'high' by default to leverage the model's full reasoning potential during the migration.

Which cloud platforms are supported by the model string updater?

The skill supports the Anthropic 1P API, AWS Bedrock, Google Vertex AI, and Azure AI Foundry.

Does this skill migrate Claude Haiku models?

No, this migration skill specifically targets transitions to Opus 4.5 and does not migrate Haiku 4.5 models.

Opus 4.5 Migration

Name: Opus 4.5 Migration
Author: Activer007

byActiver007

Developer Tools

Automates the migration of codebases and prompts from previous Claude models to the latest Claude Opus 4.5 version.

About

This skill facilitates a seamless transition to Claude Opus 4.5 by identifying and updating model strings across major platforms including Anthropic API, AWS Bedrock, and Google Vertex AI. Beyond simple string replacement, it manages the removal of unsupported beta headers, configures high-effort parameters, and offers targeted prompt refinements to address Opus 4.5's unique behavioral traits. It is particularly useful for developers looking to optimize their existing LLM-powered applications for the increased reasoning capabilities of Opus 4.5 while preventing common issues like tool overtriggering or over-engineering.

Key Features

Automated model string updates for Anthropic, AWS Bedrock, Google Vertex AI, and Azure
Configuration of the high-effort parameter for complex reasoning tasks
Context-aware optimization for frontend aesthetics and code exploration
Smart removal of unsupported beta headers with inline documentation
Behavioral prompt adjustments to prevent tool overtriggering and over-engineering
0 GitHub stars

Use Cases

Standardizing multi-cloud API calls for the latest Anthropic model releases
Refining system prompts to handle the increased sensitivity and responsiveness of Opus 4.5
Upgrading legacy Claude 3 or 4 Sonnet implementations to Claude 4.5 Opus

About

Key Features

Automated model string updates for Anthropic, AWS Bedrock, Google Vertex AI, and Azure
Configuration of the high-effort parameter for complex reasoning tasks
Context-aware optimization for frontend aesthetics and code exploration
Smart removal of unsupported beta headers with inline documentation
Behavioral prompt adjustments to prevent tool overtriggering and over-engineering
0 GitHub stars

Use Cases

Standardizing multi-cloud API calls for the latest Anthropic model releases
Refining system prompts to handle the increased sensitivity and responsiveness of Opus 4.5
Upgrading legacy Claude 3 or 4 Sonnet implementations to Claude 4.5 Opus