Does this skill support Haiku 4.5 migration?

No, this specific skill is designed to migrate models from Sonnet 4.0, Sonnet 4.5, and Opus 4.1 to Opus 4.5 only.

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

Opus 4.5 supports an 'effort' parameter; this skill sets it to 'high' to ensure the model utilizes its full reasoning capabilities for your migrated tasks.

Will this skill automatically rewrite all my prompts?

No. By default, it updates model strings. Prompt adjustments for specific behaviors like 'over-engineering' or 'thinking sensitivity' are only applied if you explicitly request them or report those issues.

Which cloud providers are supported for model string updates?

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

What happens to my existing beta headers?

The skill specifically identifies the 1M context beta header (context-1m-2025-08-07) and removes it, as it is not currently supported with Opus 4.5.

Claude Opus 4.5 Migration

Name: Claude Opus 4.5 Migration
Author: Delqhi

byDelqhi

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Developer Tools

Automates the migration of model strings, API parameters, and prompt logic from legacy Claude models to Opus 4.5.

The Claude Opus 4.5 Migration skill streamlines the transition from Sonnet 4.0, 4.5, or Opus 4.1 to the advanced Opus 4.5 model. It automatically identifies and updates model identifiers across various providers including Anthropic, AWS Bedrock, Google Vertex AI, and Azure AI Foundry. Beyond simple code updates, the skill manages the removal of deprecated beta headers, configures the 'high' effort parameter, and provides intelligent prompt adjustments to mitigate common Opus 4.5 behaviors like tool overtriggering and over-engineering, ensuring an optimized upgrade process for your entire codebase.

Key Features

01Heuristic fixes for frontend design quality and code exploration logic

021 GitHub stars

03Configuration of the new 'high' effort parameter for complex reasoning tasks

04Automatic model string replacement for Anthropic, AWS, Google, and Azure platforms

05Identification and removal of unsupported context-1m beta headers

06Tailored prompt adjustments to prevent tool overtriggering and over-engineering

Use Cases

01Standardizing LLM API calls across multi-cloud environments during model deprecation cycles

02Upgrading existing production AI applications from Sonnet 4.0 to Opus 4.5 for improved reasoning

03Refining system prompts to handle behavioral differences in Opus 4.5 sensitivity

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add delqhi/zoe-solar-accounting-ocr claude-opus-4-5-migration

For use in Claude.ai and ChatGPT

Download Skill