- [TopoCurate: Modeling Interaction Topology for Tool-Use Agent Training](https://arxiv.org/abs/2603.01714) — March 2026 framework that models interaction topology — the structural patterns of how agents invoke, chain, and conditionally branch between tools — as a first-class training signal. Rather than treating tool use as isolated function calls, TopoCurate learns topological priors from expert trajectories, improving generalization to novel tool combinations and multi-step orchestration patterns. Directly applicable to harnesses where tool topology (not just tool availability) determines task success.