Tool · curated 21 Sep 2026
GitHub - agent-chaperone/agent-chaperone: Screens an AI agent's tool calls before they run and tool results before the agent reads them. An MCP proxy plus a hooks adapter for a client's built-in tools.
First reported github.com
Coverage timeline
Single-source analysis — first reported, latest, and curated coincide.
Why it matters
agent-chaperone gives defenders a mechanism to intercept and screen agent tool invocations and returned data, a control point for mitigating tool abuse and indirect prompt injection delivered through MCP tool results.
agent-chaperone is an open-source security tool that screens an AI agent's tool calls before they execute and tool results before the agent reads them, implemented as an MCP proxy plus a hooks adapter for a client's built-in tools. Recent releases add remote server support, a watch on the tool list, and chunked screening of large results.