PrivacyTrace

PrivacyTrace How Much Can Tool Calls Reveal About You? Privacy Leakage from Tool-Call Traces PrivacyTrace studies user-profile inference from MCP tool-call traces, without access to user conversations. The benchmark contains 1,000 synthetic user profiles , 4,000 agent trajectories , and 25 MCP...

How Much Can Tool Calls Reveal about You? Privacy Leakage from Tool-Call Traces

Large language model LLM-based agents interact with external tools through protocols such as the Model Context Protocol MCP, producing tool-call traces that may expose behavioral signals about users. In this work, we systematically study the risk of user-profile inference from MCP tool-call trace...