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AutomationNewFree
Claude API Builder
Build, debug, and speed up apps on the Claude API — the right way. (For developers.)
Claude API Builder is an official Anthropic skill for developers building on the Claude API and Anthropic SDK. It helps you write, debug, and optimize your app — with prompt caching built in for speed and lower cost — and cleanly migrate existing code between Claude model versions, all following Anthropic’s own best practices.
What it does
- Helps you build and debug apps on the Claude API and Anthropic SDK.
- Bakes in prompt caching so your app runs faster and costs less by default.
- Guides tool use, streaming, batches, files, and memory the recommended way.
- Migrates existing Claude code between model versions without the headaches.
Works with
- Python
- TypeScript
- Anthropic SDK
What's in the download
- SKILL.md — the skill itself, ready to install.
- In-depth Python and TypeScript references for the Claude API.
- Guides for managed agents, prompt caching, tool use, models, and error codes.
How to install (2 minutes)
- 1Download the .zip and unzip it — you’ll get a folder called claude-api.
- 2In the Claude app: open Settings → Capabilities → Skills, choose Add / Upload, and select the folder (or the .zip).
- 3In Claude Code: drop the folder into your project’s .claude/skills/ directory, then type /skills to confirm it loaded.
- 4That’s it — ask for Claude API help and it applies Anthropic’s best practices automatically.
Want to get the most out of your new skill?
Inside Hands-On AI Club we show you exactly how to use skills like this in real work — with step-by-step courses and a community to help you.