Author

Bibo Tu Institute of Information Engineering

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Preprint Sep 2026

Agent Approval Laundering: Transitive Effects Beyond the Approved Invocation

Coding-agent approval interfaces bind a human decision to a command or tool call, while developer tools execute the transitive workflow that invocation activates. Package installation can run lifecycle hooks and write files; an MCP call can exercise network authority. We call the resulting record-coverage failure appro...

Jin-Qian Zhang, Hao-Jun Xia, Shu-Jiang Wu et al. · 0 citations

#artificial intelligence Preprint Sep 2026

Persistent Billable State: Denial-of-Wallet Attacks and Defenses in Tool-Calling LLM Agents

Multi-step tool-calling LLM agents rely on host runtimes to preserve state across turns. When a runtime carries an external tool return into later model inputs, providers meter it again. An admitted malicious or compromised tool can thereby convert untrusted data into recurring victim-billed processing without victim c...

Jin-Qian Zhang, Hao-Jun Xia, Shu-Jiang Wu et al. · 0 citations