EnvScaler: Scaling Tool-Interactive Environments for LLM Agent via Programmatic Synthesis

· Source: cs.AI updates on arXiv.org · Field: Technology & Digital — Artificial Intelligence & Machine Learning, Robotics & Autonomous Systems · Depth: Expert, extended

Summary

EnvScaler is an automated framework designed to synthesize scalable, diverse, and executable tool-interaction environments for training Large Language Model (LLM) agents. It addresses limitations of real-world access, LLM-simulated environment inconsistencies, and the scalability issues of manually built sandboxes. The framework consists of two main components: SkelBuilder, which constructs environment skeletons through topic mining, logic modeling, and dual-agent quality evaluation; and ScenGenerator, which generates multiple task scenarios, initial state data, and rule-based trajectory validation functions for each environment. EnvScaler was used to synthesize 191 environments and approximately 7,000 scenarios, which were then applied to Supervised Fine-Tuning (SFT) and Reinforcement Learning (RL) for Qwen3 series models. Experimental results across three benchmarks, including BFCL-v3 Multi-Turn, Tau-Bench, and ACEBench-Agent, demonstrate that EnvScaler significantly improves LLMs' ability to solve complex tasks requiring multi-turn and multi-tool interactions.

Key takeaway

For NLP engineers and research scientists developing LLM agents, EnvScaler offers a robust solution to the critical challenge of scaling diverse, high-quality training environments. By leveraging its programmatic synthesis capabilities, you can significantly enhance your LLM agents' proficiency in multi-turn, multi-tool interactions, leading to improved performance and generalization across complex real-world tasks. Consider integrating EnvScaler into your training pipeline to overcome limitations of real or manually crafted environments and accelerate agent development.

Key insights

EnvScaler automates the creation of diverse, executable tool-interactive environments for training LLM agents, enhancing multi-turn, multi-tool task-solving capabilities.

Principles

Method

EnvScaler uses SkelBuilder for environment skeleton construction via topic mining, logic modeling, and dual-agent assessment, then ScenGenerator creates initial states, tasks, and rule-based validation functions.

In practice

Topics

Code references

Best for: NLP Engineer, Research Scientist, AI Scientist, Machine Learning Engineer, AI Engineer

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Editorial summary, takeaway, and curation by AIssential. Original article published by cs.AI updates on arXiv.org.