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Getting the most out of Opus 5.5 in Claude and Claude Code

Addy OsmaniPlaybooks9 min

The new rules of context engineering for Claude 5 generation models

Three ways I’ve changed how I work with Claude

Lessons from building Claude Code: How we use skills

A harness for every task: dynamic workflows in Claude Code

Using Claude Code: The unreasonable effectiveness of HTML

Lessons from building Claude Code: Prompt caching is everything

Seeing like an agent: how we design tools in Claude Code

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