Tool
GitHub - JUSICK/Argos-mcp-guardrail: A lightweight, sub-millisecond security shim that prevents AI agents from accessing sensitive files (.env, SSH keys) and executing destructive commands via MCP.
Publication date unknown · Discovered github.com
Page published
Publication date unknown · First observed: 7 Oct 2026
Coverage timeline
Single-source research — one report is available.
Why it matters
Argos-mcp-guardrail gives defenders a practical control to limit the blast radius of autonomous AI agents abusing MCP tool access to read secrets or run destructive commands.
Argos-mcp-guardrail is a lightweight Rust-based security shim that intercepts MCP tool calls to prevent AI agents from accessing sensitive files (such as .env files and SSH keys) and executing destructive commands, operating with sub-millisecond latency. The project ships as an installable artifact with configurable blocked and allowed patterns via an argos.toml config.