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Anthropic · Course

Claude Platform 101

Claude Platform 101 teaches developers to build on the Claude Platform from first principles: sending your first API request, choosing a model, building the agent loop, and using tools, context management and managed agents.

Open at Anthropic ↗Common questions

Who it suits

  • Developers who have made a few API calls, or have only used Claude through a chat window.
  • Anyone who wants to understand how requests, agent loops, context windows, tools and permissions fit together before copying code.

What it covers

  • Sending your first request with messages.create and reading the structured response.
  • Choosing the right model for a job by running a simple evaluation and weighing cost and latency.
  • Building the agent loop by hand, then using the SDK’s Tool Runner.
  • Tool use, extended thinking, built-in tools, Skills and MCP servers.
  • Four context-management patterns, and building a managed agent end to end.

Common questions about Claude Platform 101

How long is Claude Platform 101?
Anthropic lists 13 lessons on the course page.
Do I need API experience?
No. Anthropic says it is for developers who have made a few API calls or only used Claude through a chat window.
Does it use Claude Code?
Yes. One lesson builds with the API using Claude Code itself and reviews the code an agent writes.
How is it different from Building with the Claude API?
Platform 101 starts from first principles in 13 lessons; the API course is a much longer, deeper programme.

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Where this comes from

Written from Anthropic’s own pages, read on 2026-10-13. Content, prices and availability change, so the provider’s page is the source. We are not affiliated with Anthropic and this is not an endorsement.