Agent Code Execution Circuit Breaker

Let AI agents run their generated code locally without burning your machine

Problem

Developers increasingly let coding agents write and execute scripts directly, but almost nobody dares run agent output on a real machine. Rolling your own sandbox is either dependency-heavy or has no real isolation. Treating agent-generated code as untrusted input has become a baseline requirement.

Solution

A self-hosted lightweight sandbox where agent-generated code runs first under strict policy: network, filesystem and syscalls are whitelisted per task. Any dangerous action (file deletion, outbound calls, privilege escalation) trips a circuit breaker and replays the full execution trace. Ships as a CLI plus a local daemon that plugs into existing agent workflows.

Users

Individual developers and small 5-20 person teams heavy on Claude Code, Cursor or Codex; indie devs who need real isolation but cannot afford enterprise sandboxes.

MVP

Single-machine containerized sandbox, one command to plug in an agent; deny network and disk writes by default with per-call allowlists; dangerous actions halt execution and log the full call stack; CLI plus a minimal web trace viewer; macOS and Linux host support.

Revenue

Open core plus paid Pro tier (shared team policies, longer audit log retention, multi-machine management) at $15-30/user/month subscription.

Why now

Agents shifting from autocomplete to direct execution is a very recent change, and the sandbox need is exploding. Existing options are either heavyweight cloud services or research-grade projects, leaving room for a lightweight local tool.