I Stopped Trusting AI Agents With Tools. So I Built a Gatekeeper.
dev.to·
Granting tools and API execution privileges to autonomous AI agents opens significant security vulnerabilities, as standard allow-lists frequently fail to prevent unintended or destructive tool calls in complex environments. This article introduces agent-tooltrust, an open-source security gatekeeper designed to enforce runtime verification and policy checks before agents execute actions. Drawing from real-world field test reports, the author details why unit tests and mock environments mask real integration flaws, emphasizing the need for policy release gates where live agents must prove safety compliance. For developers building agentic workflows, this piece delivers crucial insights into agent security, boundary validation, and constructing defense-in-depth security architectures for AI tooling.