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JavaScript AI Development:
From First Call to Production

Five project-based lessons on building AI applications with JavaScript: your first Claude API call, streaming with SSE, Express chat server, document processing, and production-ready patterns with retry, caching, and token tracking.

5 lessons
Self-paced
~60 min/day
Free forever
Start Day 1 — Free → See what's covered
What you'll learn

JavaScript is the fastest path from idea to working AI app.

The Anthropic SDK works natively in Node.js. This course shows you how to use it to build streaming AI apps, multi-turn chat servers, and document processors — all in the language you already know.

  • Make your first Claude API call with the official JS SDK
  • Stream responses to the browser with Server-Sent Events
  • Build an Express chat server with session-based conversation history
  • Process uploaded documents with multer and summarize with AI
  • Add retry logic, response caching, and token usage tracking
  • Deploy a production-ready AI app with proper error handling
5
days to production app
5
practical lessons
$0
course cost
1
real JS AI app
5-Day Curriculum

Every lesson has a real exercise.
No theory without practice.

01
First Claude API Call — JavaScript from the Start
Install the Anthropic SDK, configure your API key, and make your first call to Claude with the messages API.
Anthropic SDKAPI keysFirst message
→
02
Streaming Responses — Real-Time AI with SSE
Use Claude's streaming API with Server-Sent Events to display AI responses word-by-word in the browser.
Stream APIServer-Sent EventsReal-time UI
→
03
Express Chat Server — Sessions and Conversation History
Build a full Express chat server with express-session for multi-user conversation history management.
Express serverSession managementChat history
→
04
Document Processing — Upload and Summarize with AI
Accept file uploads with multer, extract text content, and use Claude to summarize and answer questions about documents.
File uploadsmulterDocument AI
→
05
Production Patterns — Retry, Cache, and Track Tokens
Add exponential backoff retry logic, LRU response caching, and token usage tracking to make your app production-ready.
Retry logicResponse cachingToken tracking
→
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Your instructor
B
Bo Peng
Founder, Precision AI Academy

Kaggle Top 200 data scientist. Built production AI systems for real clients using JavaScript and Node.js. Trained 400+ developers. This course is the JS AI development guide I wanted when the Anthropic SDK first dropped.

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