Tag
Bouncer is a local MCP proxy that prevents AI agents from leaking sensitive data by gating outbound tool calls from untrusted sources, using deterministic enforcement without an LLM, with benchmarks showing reduced attack success.
The author describes building Sponsio, an open-source deterministic enforcement layer for LLM agents that prevents 'legal but wrong' actions by evaluating tool calls against YAML contracts with temporal logic, addressing a gap in prompt engineering.