# Tier Architect

> Design tier configurations - which models for which roles.

- Skill: `cleanexpo/tier-architect` (Agent Skill)
- Install (CLI): `npx skillmds@latest add cleanexpo/tier-architect`
- Raw SKILL.md: https://api.skillmd.com/api/skills/cleanexpo/tier-architect/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: cleanexpo (https://skillmd.com/u/cleanexpo)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/cleanexpo/tier-architect

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# Tier Architect

Design the tier hierarchy for your project.

## Tier Config Format (YAML)
tiers:
  - name: orchestrator
    model: opus
    role: Plans and coordinates
  - name: specialist
    model: sonnet
    parent: orchestrator
    role: Complex implementation
  - name: worker
    model: haiku
    parent: specialist
    role: Discrete tasks

## Cold-start context (RA-1968)

- On cold-start, check for `<dir>/WIKI.md` files alongside SKILL.md/CLAUDE.md and read them to seed context. Each `WIKI.md` is auto-refreshed post-merge by `tao-codebase-wiki` (`app/server/tao_codebase_wiki.py`).