#harnessed.md

"The primary job is no longer to write code, but to design environments, specify intent, and build feedback loops that allow agents to do reliable work."

— OpenAI, Harness Engineering

##What is a harnessed company?

Engineering has fundamentally changed.

Traditionally engineers spent 80% of their time on features, 20% on the system. Harnessed companies flip that on its head: 80% goes to the harness — the machine that builds the machine. 20% guiding where it goes.

The harness has three parts:

  Intent ◄··········································╮
    │              new tasks + bug fixes            ·
    ▼                                               ·
  Guides ◄·····································╮    ·
    │                                          ·    ·
    │ constrain + direct                evolve ·    ·
    ▼                                          ·    ·
  Agent builds ◄───────┐                       ·    ·
    │                  │                       ·    ·
    ▼                  │ no                    ·    ·
  Verify ··············╁·······················┤    ·
    │                  │                       ·    ·
    ▼                  │                       ·    ·
  Pass? ───────────────┘                       ·    ·
    │                                          ·    ·
    │ yes                                      ·    ·
    ▼                                          ·    ·
  Ship                                         ·    ·
    │                                          ·    ·
    ▼                                          ·    ·
  Observe ·····································┴····╯

The system gets better over time. Signals from verification and observation feed back into the guides — you don't just fix the code, you evolve the harness so it never breaks that way again. That's what makes it engineering, not configuration.

##Key reading