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How to learn coding agent harnesses with Claude Code or Cursor with AI Engineering Lab

Work through Phase 4 harness lessons using the tools the course names.

  • Research
  • Intermediate
  • 60 minutes
  • From the README
  • Claude Code
  • Cursor

Who it is forA developer who already writes code and wants to use coding agents more deliberately, triggered by needing a structured way to learn harnesses and spec-driven loops.

The problemCoding agents are used ad hoc, with no shared method for checking their output or building repeatable loops.

The outcomeA completed Phase 4 pass covering Claude Code or Cursor, with the week's use case artifact shipped and its metric recorded.

What you need first

  • A computer you can install software on
  • Git installed, to run the clone command
  • Python installed, with pip available
  • About ten hours a week and basic computer literacy
  • No prior Python, GPU, or paid API key is required

Steps

  1. Run git clone https://github.com/zorost/AI-Engineering-Lab.git
  2. Run cd AI-Engineering-Lab
  3. Open reference/skills for the Claude Code and Cursor tool guides
  4. Open curriculum/README.md and go to Weeks 12 and 13, Harnesses and loops
  5. Complete the Week 12 use case exercise and record one metric and one honest note

Prompt for your agent

In the AI-Engineering-Lab repo, read the Claude Code and Cursor guides under reference/skills and the Week 12 folder under curriculum/. Summarize the harness steps for the Week 12 exercise and list the one metric the exercise asks for.

Caveat. The README lists Claude Code, Cursor, and OpenCode as tools, but it does not say how each one is installed or licensed, so check the tool guides before relying on them.

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