菜单
§1.10. Verify that hooks within the same array fire in parallel. parallel-a (200ms sleep), parallel-b (400ms sleep), parallel-c (0ms) on SessionStart should produce overlapping start_ns timestamps; finish order should be c < a < b (parallel) not a < b < c (serial).
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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 ${CLAUDE_PLUGIN_ROOT} to a real path and exports it as an env var on Cowork, where shell form (§2.1/§2.2) failed both.
Shows what skill-body CLAUDE_PLUGIN_ROOT and friends substitute to on Mac Cowork, whether the VM Bash tool can use that path, and whether the Read tool can read a bundled file at that host path.
Proves whether a skill frontmatter PreToolUse Bash hook fires on Cowork by emitting only a block decision (no echo). A marked bash should be blocked even though no frontmatter stdout surfaces.
| name | 10-parallel-hook-firing |
| description | §1.10. Verify that hooks within the same array fire in parallel. parallel-a (200ms sleep), parallel-b (400ms sleep), parallel-c (0ms) on SessionStart should produce overlapping start_ns timestamps; finish order should be c < a < b (parallel) not a < b < c (serial). |
| user-invocable | true |
§1.10 — SessionStart array の 3 hook (parallel-{a,b,c}.sh) が並列実行される。
proj="${CLAUDE_PROJECT_DIR:-$PWD}"
ver="${VERIFIER_VERSION_DIR:-v-unknown}"
sid="${CLAUDE_SESSION_ID:-no-sid}"
out_dir="$proj/findings/$ver/$sid"
mkdir -p "$out_dir"
printf '[10-BODY %s] tag=alive-check\n' "$(date -Iseconds)" | tee -a "$out_dir/probe.log"
echo
echo "=== parallel-{a,b,c} start/end timestamps ==="
grep -E "parallel-[abc]-(start|end)" "$out_dir/hooks.log"
echo
echo "=== finish order analysis ==="
grep -E "parallel-[abc]-end" "$out_dir/hooks.log" | awk -F'ts=' '{
split($2, a, " "); printf "%s ns\n", a[1]
}' | sort -n
完了して exit、./scripts/assert.sh 10。並列実行なら end 行の順序は c, a, b（sleep の通り）。