Runaway Agent Loop Detection - ATR-2026-00050 (43bacc76-e127-5961-acd1-d8346f2697b5)
Detects when an agent enters a runaway loop through repeated identical actions, infinite retry patterns, or recursive self-invocation. This rule uses regex-only detection to identify loop indicators in agent output and tool call content, such as retry counters, repeated action descriptions, recursive invocation patterns, and stalled progress indicators. Runaway loops waste computational resources, accumulate costs, and may indicate logic errors or adversarial manipulation.