Welcome to the Harnessers blog

AI made building fast. Keeping what you built standing is another job, and it is ours.

Harnessers is a collective of senior developers. We audit AI-built codebases, fix what is fragile and build a custom harness around them: the checks, tests and guardrails that let AI keep working at full speed without breaking things.

What you will find here

• Field notes from the audits and fixes we run on real projects.
• Harness techniques: how to give an AI agent rules it cannot ignore, and sensors that tell it when it got something wrong.
• Plain answers on security, architecture and testing for products built with AI.

Every article is published in English and in French.

A question about your own project? Talk to a human.