IntermediateИнженерияclaude

Claude API from A to Z

A complete course on the Anthropic Claude API for developers: Messages API, model selection, prompt engineering for Claude, tool use, streaming, batch API, prompt caching, vision, and production patterns. Real code in TypeScript and Python.

4modules

16lessons

362 mintotal time

Developers integrating Claude into a productaudience

Module 1

Getting Started

Your first API call, the Messages API structure, and choosing a model for the task and budget.

Your first API call

Install @anthropic-ai/sdk, create a client, send a message, and parse the response. Real TypeScript code.

20 min

The Messages API structure

system/user/assistant roles, content blocks (text, image), and how a multi-turn conversation works.

22 min

Choosing a model

Haiku (fast/cheap), Sonnet (balanced), Opus (powerful). When to use which, cost math, model IDs.

20 min

Module 2

Prompt Engineering for Claude

System prompts, the 200K context window, XML tags, and few-shot — what actually works with Claude.

Report a bug

Claude API from A to Z

Getting Started

Prompt Engineering for Claude

Tool Use

Production