[rurban]

That's not a harness. That's an agent cli. A harness is something completely different. Wish people could use proper terminology.

A test harness is a collection of software and test data configured to test a program unit by running it under varying conditions and monitoring its behavior and outputs. It automates the execution of test suites, providing the necessary stubs, drivers, and runtime environments so developers can isolate and verify specific code components.

I use opencode (lockedcode is still vaporware), claude, kimi and codex.

And most models. Just no Google models so far, I don't trust them.

[modmans2nd]

It is really telling when people say that. It’s clear they think the job of harness development is done by selecting the agent environment.

[computably]

Akshually, they said "harness," and not "test harness."

There's no particular reason "agent harness" can't have practically the same definition, substituting test-specific concepts for agent-specific ones.

[Sinidir]

Harness: a piece of equipment with straps and belts, used to control or hold in place a person, animal, or object.

So yes the generel meaning applies to test setup and running and also to the agent cli which is the harness for the model.

[rurban]

No, an agent cli is no harness. You have to provide a harness for an agent by yourself, otherwise it will run free. Which is called vibe coding. Free as you wish, without any harness.

[teknologist]

An agent cli provides a sandbox, with permission systems and auto command classifiers. That’s part of the harness.

[modmans2nd]

lol pi doesn’t

[dolmen]

May I ask about your trust issue regarding Google models?

Is it about quality issues (lack of guardrails, agent runs dangerous commands)? I have seen first-hand Gemini-cli going out of the project directory and using my home directory as a work area.

Or is it about terms of service?

Or other concerns?

[rurban]

Quality. They are too dumb.

And the lack of ease of use.

[tredre3]

You're free to fight the terminology if you want (I did at first too), but the zeitgeist has chosen a meaning that disagrees with you, so people will see you as being deliberately obtuse and unpleasant when you fight back.

Learning when to let go is an incredibly important skill that I have learned way too late in life.