From prompt engineering to context engineering to harness engineering

A placeholder first essay for the blog: the shift from clever prompts to designed context and repeatable evaluation harnesses.

This is a placeholder draft for the first essay. Replace it with the real piece when ready.

The working thesis:

Prompt engineering is where many AI workflows start. Context engineering is where they become systems. Harness engineering is where they become dependable enough to improve.

Shape of the essay

  1. Why prompt craft alone is not enough.
  2. How context becomes an architectural concern.
  3. Why harnesses, tests, fixtures, and feedback loops matter.
  4. What this means for hands-on architects building real AI systems.

Notes

Keep this grounded in work you have actually done: RAG, agentic workflows, network automation, and the difference between a demo and a system that survives contact with reality.