Show HN: AI Circuit Breaker – Reverse proxy to stop agent infinite loops

Category: infrastructure

Tags: llm, reverse-proxy, cost-control, infinite-loop, api-gateway

Score: 5.3/10 (Innovation: 6, Technical: 5, Documentation: 3, Utility: 5)

Shunt is an in-memory reverse proxy that acts as a firewall for LLM API calls, detecting infinite tool loops via prompt hashing and enforcing spend caps with sub-35ms overhead. It's interesting for its focus on preventing runaway agent costs without payload retention, though the project appears early-stage with minimal documentation.

Target audience: backend devs, devops, AI engineers

Repository: https://circuit-breaker-sage.vercel.app/ · TypeScript

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