---
id: SMH-PHASE-CORE0001
type: phase
title: "Core Capability"
label: core
---

# Core Capability

## Operating posture

Establish Smith's provider-free runtime foundation across the project.
Prioritize stable shared types, deterministic sessions, explicit errors, and safe tool effects.

## Transition signal

The product can persist and replay tool-driven state without relying on a live provider or interface mode.