Show HN: Aw-1 – Deterministic AST circuit breaker and kernel jail for AI agents

Category: security

Tags: ai-security, ast-parsing, circuit-breaker, agent-guardrails, python

Score: 6.3/10 (Innovation: 6, Technical: 7, Documentation: 7, Utility: 5)

aw1-breaker is a zero-dependency Python library that uses AST inspection and declarative policies to deterministically block malicious tool calls from AI agents before execution. It offers sub-millisecond latency, HMAC-signed execution tokens, and an MCP server integration, making it a lightweight circuit breaker for agent security. The project is interesting for its deterministic, fail-closed approach to safeguarding autonomous AI tooling.

Target audience: AI/ML engineers, backend developers, security engineers

Repository: https://github.com/MvikManners/aw1-circuit-breaker · Python · Apache-2.0 · 1 stars

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