Claude API and Claude Code guides for business automation

This is my working map of Claude for business automation. It collects what I have written on the Claude API and Claude Code, from first setup through real builds to choosing a model and keeping the bill down.

Most of these are notes from things I built, and the model posts are my read on what each release changes for automation. If you are new, start with the first group and read down. If you already know the basics, jump to the group that matches your question.

New here? Start with the guide.

Key terms

Plain-English definitions for the terms these guides lean on.

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I build custom AI automation for B2B teams, from the first audit to production. Tell me what is slowing you down and I will map the fix.