菜单
§1.9. Slash invocation does NOT trigger PreToolUse:Skill; natural-language invocation does. UserPromptExpansion fires for slash only.
用 Codex 或 Claude 帮你安装 复制这段 Prompt，粘贴到 Codex、Claude 或其他助手里，让它检查 Skill 页面并帮你完成安装。
基于 SOC 职业分类
Mac Cowork で、plugin-level SessionStart hook(host 側)から $CLAUDE_PLUGIN_DATA に書いた値が「別の chat session を跨いで」残るかを検証する probe。書き込み＆読み戻しは hook(persist.sh)側で行い、その結果は SessionStart の stdout として context に出る。この skill body は対比用に「VM Bash 側から DATA が見えるか／hook が書いたファイルを読めるか」を確認する。
Surfaces UPE_PROBE_* marker lines to test whether the plugin-level UserPromptExpansion hook fires on Cowork. Invoking this skill via slash is itself the trigger; compares against UserPromptSubmit and SessionStart controls.
Triggers the plugin-level PreToolUse hooks by running a sentinel bash command, to test (via session export) whether Cowork runs PreToolUse hook commands through cmd.exe or a POSIX shell, and whether the inline block pattern actually blocks the bash tool.
Surfaces the EXEC_* marker lines emitted by the plugin-level SessionStart hooks, which run hook commands in EXEC FORM (args present). Used to test whether exec form resolves ${CLAUDE_PLUGIN_ROOT} to a real path and exports it as an env var on Cowork, where shell form (§2.1/§2.2) failed both.
Shows what skill-body CLAUDE_PLUGIN_ROOT and friends substitute to on Mac Cowork, whether the VM Bash tool can use that path, and whether the Read tool can read a bundled file at that host path.
Proves whether a skill frontmatter PreToolUse Bash hook fires on Cowork by emitting only a block decision (no echo). A marked bash should be blocked even though no frontmatter stdout surfaces.
| name | 09-slash-vs-natural |
| description | §1.9. Slash invocation does NOT trigger PreToolUse:Skill; natural-language invocation does. UserPromptExpansion fires for slash only. |
| user-invocable | true |
§1.9 — slash 経由は Skill tool を通らない、自然文経由は通る。
proj="${CLAUDE_PROJECT_DIR:-$PWD}"
ver="${VERIFIER_VERSION_DIR:-v-unknown}"
sid="${CLAUDE_SESSION_ID:-no-sid}"
out_dir="$proj/findings/$ver/$sid"
mkdir -p "$out_dir"
printf '[09-BODY %s] tag=alive-check sid=%s\n' "$(date -Iseconds)" "$sid" | tee -a "$out_dir/probe.log"
echo
echo "=== hooks.log tags in this session ==="
grep -E "^=== \[" "$out_dir/hooks.log" 2>&1 | head -20
echo
echo "=== Tag presence ==="
for t in user-prompt-submit user-prompt-expansion pretool-skill pretool-bash session-start; do
c=$(grep -c "tag=$t" "$out_dir/hooks.log" 2>/dev/null || echo 0)
printf ' tag=%-25s count=%s\n' "$t" "$c"
done
完了して exit。もう一度別 claude セッションで自然文「09-slash-vs-natural skill を起動して」を実行し、別の sid 配下に同じ skill の log を残す。2 セッション分の sid ディレクトリを比較するのが §1.9 の判定。
./scripts/assert.sh 09 で判定。