Lesson 02 of 09

Calling the Claude / OpenAI API

Make your first real API calls, handle keys safely, and understand requests, responses, tokens, and cost. You'll build a working script that sends a prompt and returns a structured answer — your agent's heartbeat.

⏱ 55 min
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Video coming soon
The written lesson is below. Video walkthrough publishes shortly.

Make your first real API calls, handle keys safely, and understand requests, responses, tokens, and cost. You'll build a working script that sends a prompt and returns a structured answer — your agent's heartbeat.

The full video walkthrough is coming soon. In the meantime, this lesson covers the technique from first principles, with a worked example and a concrete deliverable you can add to your portfolio.