ceLLMate: Sandboxing
Browser AI Agents

1UC San Diego, {lumeng, hfeng, efernandes}@ucsd.edu
2AI Sequrity Company, ilia@sequrity.ai
Teaser Image

Securing your browser agents today!

ceLLMate is a sandboxing framework for Browser-Using Agents (BUAs) that enforces strict boundaries on their behavior and reduces the blast radius of prompt injections, analogous to process-level sandboxing in operating systems.

ceLLMate Design

ceLLMate Design Figure

ceLLMate Demos

BibTeX

@article{meng2025cellmate,
  title={ceLLMate: Sandboxing Browser AI Agents}, 
  author={Luoxi Meng and Henry Feng and Ilia Shumailov and Earlence Fernandes},
  journal={arXiv preprint arXiv:2512.12594},
  year={2025}
}