{"slug": "scitoolagent-evo-an-ontology-aware-self-evolving-agent-for-open-world-scientific", "title": "SciToolAgent-Evo: An Ontology-Aware Self-Evolving Agent for Open-World Scientific Tool Acquisition", "summary": "Researchers propose SciToolAgent-Evo, an ontology-aware self-evolving agent for open-world scientific tool acquisition, which uses an evolving memory and a LinUCB-based bandit gate to dynamically balance exploration and exploitation. The agent achieves state-of-the-art performance on the new OpenSciToolBench benchmark, which includes 900 realistic tasks across four difficulty levels.", "body_md": "arXiv:2607.28692v1 Announce Type: new\nAbstract: Large language model (LLM) agents have been increasingly adopted in scientific research for organizing and invoking specialized computational tools. However, their reliance on predefined tool spaces with static semantics limits their applicability to open-world scientific workflows, where tool requirements, capabilities, and boundaries evolve dynamically. To this end, we propose SciToolAgent-Evo, an ontology-aware self-evolving agent for open-world scientific tool acquisition. Driven by an evolving memory of skills, experiences, and an ontologized tool graph, it distills generalizable knowledge from contrastive trajectories during accumulation, whereas during inference, it formulates active requests and utilizes a LinUCB-based bandit gate to dynamically balance exploration and exploitation. Once a novel tool is acquired, its scientific ontology is completed online for seamless integration into the known graph. Moreover, we introduce OpenSciToolBench, a benchmark containing 900 realistic tasks across four difficulty levels. Extensive evaluations show that SciToolAgent-Evo achieves state-of-the-art performance, validating its robustness and generalization.", "url": "https://wpnews.pro/news/scitoolagent-evo-an-ontology-aware-self-evolving-agent-for-open-world-scientific", "canonical_source": "https://arxiv.org/abs/2607.28692", "published_at": "2026-08-03 04:00:00+00:00", "updated_at": "2026-08-03 04:13:22.965803+00:00", "lang": "en", "topics": ["artificial-intelligence", "large-language-models", "ai-agents", "ai-research"], "entities": ["SciToolAgent-Evo", "OpenSciToolBench", "arXiv"], "alternates": {"html": "https://wpnews.pro/news/scitoolagent-evo-an-ontology-aware-self-evolving-agent-for-open-world-scientific", "markdown": "https://wpnews.pro/news/scitoolagent-evo-an-ontology-aware-self-evolving-agent-for-open-world-scientific.md", "text": "https://wpnews.pro/news/scitoolagent-evo-an-ontology-aware-self-evolving-agent-for-open-world-scientific.txt", "jsonld": "https://wpnews.pro/news/scitoolagent-evo-an-ontology-aware-self-evolving-agent-for-open-world-scientific.jsonld"}}