Author

Yu-Qiang Chen

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Preprint Aug 2026

Tunable Tool-Call Rates in LLM Agents via Representation Steering

Whether an instruction-tuned model calls a tool can be controlled by a single linear direction in its residual stream, extracted without any training from the model's own tool-use preference signal and turned into an inference-time intervention with no prompt change.

Yu-Qiang Chen, Vincent Siu, Yang Liu et al. · 0 citations