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I had no idea Meta has a coding agent harness. Does anyone have experience with it and can comment? The 1.3 contributor prices look very attractive. I'll probably start using their API if performance is good and the API is reliable with decent rate limits.

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You should use their harness. They trained it on multiple harnesses but have specifically optimized it for their harness. Cline also did an independent experiment w spark 1.2 where using the native harness makes it use fewer tokens / turns to accomplish tasks

Any more info on this?

Cline experiment: https://x.com/cline/status/2085237843379519737

Muse code: https://developer.meta.com/ai/resources/blog/build-with-muse...

> Co-trained with the harness. Muse Code was in the training loop from day one, so tool calls succeed and plans execute cleanly. Crucially, we trained across multiple harnesses, so while the model is at its best in Muse Code, it still generalizes to other coding agents you already use.

thank you

Thanks. Just downloaded and pretty impressed so far. It's fast and nice to work with.

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