(The Claude API)
Build a streaming, tool-using chatbot on the Claude API — in Python, in about half an hour.
A free, hands-on tutorial: build your first app on the Claude API. Get an API key, make your first call, then build a command-line chatbot that holds a conversation, streams its replies, and calls your own Python tools. The one course in the track that talks to a real cloud API (needs an API key, spends a few cents).
The Claude API is how real products are built on AI — chatbots, coding copilots, agents and RAG systems all start with exactly the calls you'll write here. (Heads up: this one needs an Anthropic API key and costs a few cents to run.)
The model is stateless — it forgets everything between calls. Keep the history yourself and build a chat loop.
Print the answer token by token as it's generated, instead of waiting for the whole thing — the ChatGPT feel.
Let the model call your own Python function — the core loop behind every AI agent — in about a dozen lines.