What is OS⁴

OS⁴ is a NetBSD-based operating system with the Harmonia agent runtime integrated at the system level — not as a userspace application, but as a native component of the OS.

Why a Dedicated OS

Running an agent as an application on top of a general-purpose OS introduces unnecessary abstraction. OS⁴ eliminates that layer:

Benefit Description
Direct hardware access Process scheduling, I/O, and memory management without abstraction overhead
Tighter orchestration loops The agent observes and controls system-level resources directly
Faster evolution cycles Hot patching and binary rollout happen at the OS level with lower latency
Security boundary The agent operates within NetBSD's proven, audited security model

NetBSD Heritage

NetBSD was chosen for specific technical reasons:

  • Portability — runs on x86, ARM, RISC-V, MIPS, m68k, PowerPC, SPARC, VAX, and more
  • Clean kernel design — well-documented, modular, and auditable
  • Driver framework — broad hardware support with minimal bloat
  • BSD license — permissive licensing compatible with commercial deployment

Included Harmonia Stack

OS⁴ ships the full Harmonia runtime pre-installed:

  • Common Lisp orchestration runtime (SBCL)
  • Rust capability layer (13 core crates + tools + frontends)
  • 9-port I/O boundary (vault, store, router, lineage, matrix, tool-runtime, baseband, swarm, evolution)
  • Declarative configuration via S-expressions
  • Harmonic machine for task scheduling and scoring
  • Ouroboros and Phoenix evolution engines

Next Steps