GitHub - joseluispino/hardstop: Reference implementation for "Hard Stop: Kernel-Level Preemption and Containment for Rogue Agentic Execution". Out-of-band Epistemic Andon Cord, sub-millisecond (<0.154 ms) POSIX process group preemption, and torn-read resistant WAL state extraction.

Hard Stop, an open-source supervisory control framework by joseluispino, is available on GitHub under Apache 2.0. The project claims deterministic process freezes for autonomous AI agents in under 0.154 ms using out-of-band DES supervision, SR sentinels, and POSIX/eBPF preemption buses. Its repository includes a latency benchmark script, a 20-assertion test suite, and a WAL-based state extraction mechanism. The author reports pending USPTO patent applications for the architecture.