https://pypi.org/project/pyatr/ Recent updates to the Python Package Index for pyatr en https://pypi.org/project/pyatr/0.2.4/ Python engine for Agent Threat Rules (ATR) -- the open detection standard for AI agents (like Sigma, but for prompt injection, tool poisoning, and MCP attacks). 311 rules, Cisco AI Defense shipped, 97.1% garak recall. Tue, 21 Apr 2026 09:15:39 GMT https://pypi.org/project/pyatr/0.2.2/ Python reference engine for Agent Threat Rules (ATR) - Layer 1 regex detection Fri, 17 Apr 2026 00:01:11 GMT