Audience

Reader Matrix

Reader	Best first doc	Why
New user	Start Here	Shortest path from overview to first delegated task.
Maintainer	Testing	System boundaries and verification.
Release operator	Testing	Test runners, release markers, and live gate evidence.
Plugin author	Glossary, Compatibility	Terms, generated surfaces, and host/runtime boundaries.
Claude Code user	Getting Started	How a Claude Code host activates Kay or Codex.
Codex host user	Getting Started, Compatibility	How a Codex host activates Kay or Codex.
Kay user	Workflows, Compatibility	Kay runtime routing and provider selectors.
Codex sidekick user	Workflows, Glossary	Local OpenAI Codex CLI delegation.

How To Use This Matrix

• Start with the row that matches your role.
• If you do not know your role, start with Start Here.
• If you need exact terms, read Glossary.
• If you need host/runtime differences, read Compatibility.