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Prompt engineering for developers

Prompts as code: system prompts, tests, versions and reliable output.

Updated: 20 July 2026Editor: Skilvy editorial

22 lessons · 9 h read · 2 free · 4 AI-graded projects

About this course

This course treats prompts not as chat messages but as part of a product: code that depends on a model's answer needs a predictable, checkable result. It solves the problem of turning a prompt from a random phrasing into a managed system component.

The course moves from request anatomy and slot-based phrasing through response schemas as contracts and in-code validation to context management and call observability. Projects run on prompts from your own product: clean up one prompt's phrasing slot by slot, build an output contract with measured reliability, rework a scenario's context with deletion testing.

Built for developers who already call models from code and want to cut down on invalid and unstable answers. You'll need programming experience and hands-on work with model APIs — this isn't a course for people new to development.

What you'll learn

  • Break a prompt into slots: role, task, context, constraints, format
  • Design a response schema as a contract and validate it in code
  • Tell useful few-shot examples apart from harmful ones
  • Build a set of examples as a prompt test suite
  • Measure output quality without a human in the loop
  • Guard a prompt against leaks and injected text
  • Set up retries, graceful degradation, and a fallback path
  • Track quality regressions when switching models

What you'll end up with

  • A prompt from your product rewritten slot by slot, with both versions to compare
  • An output contract with a response schema and measured reliability
  • A prompt test suite built from real inputs
  • A certificate on paid plans

Not for you if you're after a library of ready-made prompts to copy rather than an engineering approach to building them.

Course program

$69
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What's included

  • Lifetime access
  • Tasks and quizzes
  • Certificate — on a paid plan
  • Updates forever