MicroLoop: Open-Source Rust Tool Adds Runtime Safety Layer to AI Agents

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A developer has released MicroLoop, an open-source runtime safety layer built in Rust, designed to prevent autonomous AI agents from getting trapped in costly execution loops. The tool intercepts and verifies every tool call made by an AI agent before it executes, addressing a gap that prompt engineering alone cannot reliably fill. MicroLoop uses a history tracker to detect repeated or looping actions and a rule engine that validates arguments via JSON Schema and regex before permitting execution. Written with a lightweight no_std Rust core, it achieves roughly 17 microseconds average verification time and can handle around 58,000 verifications per second. The project is designed to integrate with Python-based AI frameworks without requiring developers to rewrite their existing agent logic.

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