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opus-4-5-migration

Migrate Claude prompts and code from older models to Opus 4.5.

406|31|Updated Dec 1, 2025
Search Tags:#prompt engineering#migration#claude#code update#context-engineering#api calls#opus-4-5
One-click install
npx skills add https://github.com/gotalab/skillport --skill opus-4-5-migration
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: opus-4-5-migration
Source: https://github.com/gotalab/skillport/tree/main/.agent/skills/claude-code/opus-4-5-migration
Command: npx skills add https://github.com/gotalab/skillport --skill opus-4-5-migration

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill automates the complex and error-prone process of updating Claude prompts and API calls for Opus 4.5, saving developers significant time and reducing manual errors. It handles model string updates and guides prompt adjustments for known behavioral differences.

Core Features & Use Cases

  • Model String Updates: Automatically updates API model strings across various platforms (Anthropic, AWS Bedrock, Google Vertex AI, Azure AI Foundry).
  • Prompt Adjustments: Guides on modifying prompts for Opus 4.5 behavioral differences (e.g., tool overtriggering, over-engineering prevention, code exploration, frontend design, thinking sensitivity).
  • Unsupported Header Removal: Identifies and removes beta headers incompatible with Opus 4.5.
  • Use Case: A developer needs to upgrade their existing Claude Sonnet 4.0 codebase to leverage the latest Opus 4.5 model. This skill will guide them through updating model strings and adjusting prompts for optimal performance.

Quick Start

Migrate my Python codebase from Claude Sonnet 4.0 to Opus 4.5. Ensure all model strings are updated and suggest any necessary prompt adjustments.

Frequently Asked Questions about opus-4-5-migration

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I update my Claude API calls from Sonnet 4.0 to Opus 4.5?▼

Migrate API calls by updating model strings across Anthropic, AWS Bedrock, Google Vertex AI, and Azure AI Foundry platforms. This Skill automates string replacements and removes incompatible beta headers, then generates a concise change summary for your codebase.

What prompt adjustments does Opus 4.5 require compared to earlier Claude models?▼

Opus 4.5 exhibits behavioral differences in tool overtriggering, code exploration, and frontend design reasoning. This Skill guides prompt modifications for these known differences to optimize performance without manual trial-and-error.

Can I migrate a codebase from Claude Sonnet 4.x to Opus 4.5 automatically?▼

Yes. This Skill automates migration from Claude Sonnet 4.0, Sonnet 4.5, or Opus 4.1 to Opus 4.5, updating model strings, removing unsupported beta headers, and adjusting prompts for Opus 4.5 behavioral differences in a single pass.

What platforms and APIs does this Skill support for model string updates?▼

Migration applies to Anthropic API, AWS Bedrock, Google Vertex AI, and Azure AI Foundry model strings. The Skill enforces platform-specific string replacements and sets the effort parameter to high for each.

Does this Skill handle migrations from Claude Haiku to Opus 4.5?▼

No. This Skill migrates from Claude Sonnet 4.0, Sonnet 4.5, or Opus 4.1 to Opus 4.5 only. Haiku migrations are excluded and must be handled separately.

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