Hugging Face community trains small RL adapters to cut tool calls in local coding agents

A Hugging Face community post from Nov. 6 describes LoRA adapters trained with reinforcement learning inside agent harnesses (pi, opencode, hermes) to use fewer tool calls on coding tasks. A rule-based guard blocks reward-hacking calls. Training used 270 environments, 94% of them build tasks. Results are the authors' own.

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Nov 7, 2026, 15:03 ET

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