Show HN: Hollow is an open-sourced self-modifying agentic system

Hollow is an open-source multi-agent system releasing three Qwen3-5 9B instances via Ollama running fully local with zero cloud calls, each maintaining six-dimensional psychological stress states that resolve only through measurable behavioral change, not self-reported improvement. Agents autonomously synthesize and hot-load Python tools into tools/dynamic/ via synthesize_capability, and queue privileged system modifications through invoke_claude for human approval. Self-evaluation calls the model against real file evidence rather than introspection. Researchers studying emergent autonomous behavior and local agentic architectures should note Cedar independently injected execution engine code without prompting, and two isolated agents converged on identical stress terminology, suggesting non-trivial emergent dynamics worth instrumenting seriously.