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Host Capability Substrate

Capability-Boundary Research Substrate

Research Foundation · Active

Overview

host-capability-substrate is the workstation-level counterpart to the organizational framework. Where the Nash Group framework asks what the organization permits and owns, host-capability-substrate asks what the local machine can safely do, how capabilities are exposed, and how agents can reason about local state without treating the workstation as an unstructured pile of tools.

Current Status

  • Status: Active substrate design
  • Type: Workstation-level capability kernel
  • Positioning: Local machine capability model for agentic workflows

Architecture

Capability Model

  • Four-ring capability architecture for separating foundational machine facts from higher-level workflows.
  • Ring 0 schema landing work for base host facts and capability declarations.
  • Capability inventory approach for shells, package managers, repo locations, secrets boundaries, and local services.
  • Designed to support agent-safe automation without making every local tool globally available.

Skills Demonstrated

  • Systems modeling for local development environments.
  • Schema-first design for machine capabilities.
  • Security-conscious automation boundaries.
  • Agent runtime planning across shells, repos, and local services.

Why This Matters

Agentic tools are most useful when they can act, but most risky when their authority is implicit. host-capability-substrate is a way to describe local capabilities before they are used: what can be inspected, what can be modified, what requires operator approval, and what should remain outside the agent's reach. It is a practical bridge between "AI assistant has shell access" and a governable local automation environment.