AgentBreaker
A runtime loop circuit breaker for multi-agent systems — detects repeat patterns and alternating-pair deadlocks before they drain your budget.
AgentBreaker is a Node.js HTTP + WebSocket server that monitors agent tool-call streams for runaway loop patterns. Agents POST events to /event; the server maintains a sliding window and fires a HALT response the moment it detects a repeated tool+input fingerprint (≥3× in 20 calls) or an A→B→A→B alternating-pair deadlock. A real-time dashboard shows a live fingerprint heatmap and a cost-savings counter. Ships with integration examples for LangGraph, AutoGen, and plain JavaScript.
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