Install the Skill-only fallback

When to use Skill-only

Use the standalone SKILL when the Host cannot load Plugins/MCP or when you need instruction-only routing. It preserves envelope selection, Explicit Skill Lock, support consent, and usage disclosure. It does not provide durable resume, cross-process compare-and-swap, full drift detection, or sealed activation instrumentation.

Install a release asset

Download workflow-skill-router-skill-v2.0.1.zip from the GitHub Release. Extract the inner workflow-skill-router/ folder into the Codex Skills directory.

Exact archive paths:

workflow-skill-router/SKILL.md
workflow-skill-router/assets/personal-routing-profile.example.json
workflow-skill-router/assets/workspace-routing-profile.example.json
workflow-skill-router/references/evaluation-boundary.md
workflow-skill-router/references/goal-protocol.md
workflow-skill-router/references/personal-routing-profiles.md
workflow-skill-router/references/routing-protocol.md

After extraction, .codex/skills/workflow-skill-router/SKILL.md must exist directly under the Skill directory.

Install from a contributor checkout

Windows PowerShell:

$Target = Join-Path $env:USERPROFILE ".codex\skills\workflow-skill-router"
Copy-Item -Recurse -Force "starter\v2\workflow-skill-router" $Target
Get-Content -Encoding UTF8 (Join-Path $Target "SKILL.md") | Select-Object -First 8

macOS or Linux:

mkdir -p "$HOME/.codex/skills"
cp -R starter/v2/workflow-skill-router "$HOME/.codex/skills/workflow-skill-router"
sed -n '1,8p' "$HOME/.codex/skills/workflow-skill-router/SKILL.md"

Verify behavior

The package includes assets/personal-routing-profile.example.json, assets/workspace-routing-profile.example.json, and references/personal-routing-profiles.md. Put the workspace example at .codex/workflow-skill-router.json; do not copy the personal example there unchanged. Skill-only reads fixed local files only when the Host grants filesystem access. Without it, provide the Profile content in the conversation and treat the result as advisory.

Skill-only interprets the tree as skill-only-fallback. It must preserve workspace-over-personal precedence, explicit user SKILL priority, and the intended-unverified Runtime Capability Discovery boundary, but it cannot claim deterministic loading or durable enforcement. The profile preview CLI belongs to Plugin/Core mode.

Start a new Codex task and ask for a small documentation edit. The Router should declare a single route and planned SKILL usage. Then explicitly name one SKILL and request an additional outside support role; the Router must ask before activating that support.

Always label this mode skill-only-fallback. A SKILL file cannot self-assert Host exposure or hybrid-full conformance.