Does this skill support migration for Claude Haiku?

No, this specific skill is designed to migrate users from Sonnet 4.0, Sonnet 4.5, or Opus 4.1 to Opus 4.5 only. It does not handle Haiku model strings.

Which cloud platforms are supported for model updates?

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

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

Opus 4.5 supports an 'effort' parameter; this skill automatically sets it to 'high' to ensure the model provides the most thorough reasoning for your tasks.

How does the skill handle the 1M context window beta?

Since the 1M context beta header (context-1m-2025-08-07) is not yet supported for Opus 4.5, the skill removes it and leaves a note in your code for future reference.

Will it automatically change my system prompts?

By default, the skill only updates model strings. Prompt adjustments for behaviors like 'over-engineering' or 'thinking sensitivity' are only applied if you explicitly request them or report those issues.

Claude Opus 4.5 Migration Assistant

Name: Claude Opus 4.5 Migration Assistant
Author: Activer007

byActiver007

Cloud Infrastructure

Migrates codebases, API calls, and prompts from earlier Claude models to the high-performance Claude Opus 4.5 architecture.

About

The Claude Opus 4.5 Migration Assistant streamlines the transition from Sonnet 4.0, Sonnet 4.5, or Opus 4.1 to the advanced Opus 4.5 model across major platforms including Anthropic API, AWS Bedrock, Google Vertex AI, and Azure AI Foundry. This skill automates the identification and replacement of model strings, removes deprecated beta headers, and applies intelligent prompt adjustments to mitigate behavioral shifts such as tool overtriggering, over-engineering, and conservative code exploration. It ensures your implementation leverages the 'high' effort reasoning parameter for peak performance while preserving your existing prompt structure and style.

Key Features

Cleanup of unsupported beta headers and deprecated API configurations
Automated model string replacement for Anthropic, AWS, Google, and Azure platforms
Intelligent prompt optimization to prevent over-engineering and tool overtriggering
0 GitHub stars
Automated configuration of the high-effort reasoning parameter
Context-aware integration of specific behavioral snippets using XML tags

Use Cases

Fine-tuning system prompts to resolve behavioral differences in the latest Claude models
Standardizing model strings across multi-cloud deployments (Bedrock, Vertex, Azure)
Upgrading production AI applications from Sonnet 4.5 to Opus 4.5 for better reasoning

About

Key Features

Cleanup of unsupported beta headers and deprecated API configurations
Automated model string replacement for Anthropic, AWS, Google, and Azure platforms
Intelligent prompt optimization to prevent over-engineering and tool overtriggering
0 GitHub stars
Automated configuration of the high-effort reasoning parameter
Context-aware integration of specific behavioral snippets using XML tags

Use Cases

Fine-tuning system prompts to resolve behavioral differences in the latest Claude models
Standardizing model strings across multi-cloud deployments (Bedrock, Vertex, Azure)
Upgrading production AI applications from Sonnet 4.5 to Opus 4.5 for better reasoning