Aw1 Circuit Breaker

Aw1 Circuit Breaker is a zero-dependency Python security circuit breaker that intercepts AI agent tool calls using AST inspection.

Aw1 Circuit Breaker is a zero-dependency Python security circuit breaker designed for autonomous AI agents, tool dispatch pipelines, and Model Context Protocol servers. It intercepts agent tool calls in sub-millisecond execution loops using Abstract Syntax Tree decompilation, declarative Policy-as-Code, rolling velocity monitors, and cryptographically signed HMAC execution tokens. The software operates deterministically at the Abstract Syntax Tree level before code reaches Python's runtime execution frame, blocking threats like dynamic execution, shell escapes, lateral exfiltration, SQL destruction, and dunder introspection. It is built for developers and enterprises running autonomous AI workloads who require deterministic protection instead of probabilistic prompt-based guardrails. Supported environments include Python 3.10 through 3.13, Claude Desktop, Cursor, LangGraph, and a cloud REST API gateway.

Aw1 Circuit Breaker at a glance

Best for: Software engineer
Runs on: Python, API, self-hosted, open source
Pricing: Developer Sandbox Free; Developer Pro $49/mo; Team / Startup $199/mo; Enterprise Dedicated $990/mo
Released: October 2026
Category: AI coding tool
Website: github.com/mvikmanners/aw1-circuit-breaker

Key features

Abstract Syntax Tree decompilation
Declarative Policy-as-Code
Per-actor rolling velocity monitors
Cryptographically signed HMAC execution tokens
Universal function and async gating
Model Context Protocol server integration
Cloud REST API gateway interception

Use it for

Intercepting autonomous AI agent tool calls
Blocking dynamic execution and shell escapes
Preventing SQL destruction and data exfiltration
Enforcing security policies in Model Context Protocol servers
Protecting Python microservices and agent frameworks

Alternatives to Aw1 Circuit Breaker

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Stop That Shit — Enforces task boundaries to stop unnecessary AI agent actions.
AgentGate — Blocks attacks in under 35ms with a local neural classification head.
Fluxix — Stops dangerous tool calls and data leaks before execution.
Paveo — Enforces deterministic rules on AI agents to prevent destructive actions.
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Squidbrake — Stops destructive AI actions like force pushes and deletes before they happen.
ripwire — It reduces token spend and prevents bugs by giving coding agents precise repository context.
Faraday — Combines offensive security, automation, and integrations in one platform.

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