ASIL: Replacing Screenshot-and-Click with Structured State and Semantic Actions

Rui Xie, Lu Chen


Abstract
Powerful code agents can execute scripts, call tools, and manage files, yet many important applications remain accessible primarily through graphical user interfaces. We argue that screenshot-and-click is an inefficient interface for software-operating agents: screenshots are state-incomplete, and GUI actions are brittle, semantically weak, and poorly matched to long-horizon planning. We introduce ASIL (Agent-Software Interaction Layer), an agent-native interface that exposes software through structured JSON observations and code-executable semantic actions, realized through the deepest feasible access path for each application. We instantiate ASIL across 15 applications and a benchmark of 300 single-application and 80 multi-application tasks. ASIL reaches above 80 with closed models while executing fewer than five actions per task. Under a repaired runtime and a 50-step screenshot budget, the same tasks yield 6.6 and 26.6 strict success under screenshot-and-click control, rising to 15.0 and 53.3 on an easier OSWorld-comparable band. Against application-native interfaces on matched tasks, ASIL exceeds LibreOffice’s UNO API by 28-38 strict points but only matches draw.io’s MCP content contract. The structured modality also suits training: small-scale SFT raises Qwen3.5-2B from 58.0 to 72.1 and Qwen3.5-9B from 66.6 to 80.4, and resource-limited on-policy RL further raises them to 74.4 and 82.2.
Anthology ID:
2026.findings-emnlp.1855
Volume:
Findings of the Association for Computational Linguistics: EMNLP 2026
Month:
October
Year:
2026
Address:
Budapest, Hungary
Editors:
Hung-Yi Lee, Sunipa Dev, Jessy Li, Desmond Elliott
Venue:
Findings
SIG:
SIGDAT
Publisher:
Association for Computational Linguistics
Note:
Pages:
39611–39629
Language:
URL:
https://aclanthology.org/2026.findings-emnlp.1855/
DOI:
Bibkey:
Cite (ACL):
Rui Xie and Lu Chen. 2026. ASIL: Replacing Screenshot-and-Click with Structured State and Semantic Actions. In Findings of the Association for Computational Linguistics: EMNLP 2026, pages 39611–39629, Budapest, Hungary. Association for Computational Linguistics.
Cite (Informal):
ASIL: Replacing Screenshot-and-Click with Structured State and Semantic Actions (Xie & Chen, Findings 2026)
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PDF:
https://aclanthology.org/2026.findings-emnlp.1855.pdf