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Probe env propagation across 3 process tiers (§1.1). Compares which CLAUDE_* env vars are set in plugin-level hook vs skill frontmatter hook vs Bash tool subprocess.
Codex 또는 Claude로 설치 이 Prompt를 복사해 Codex, Claude 또는 다른 어시스턴트에 붙여 넣으면 Skill 페이지를 검토하고 설치를 진행할 수 있습니다.
SOC 직업 분류 기준
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 ${CLAUDE_PLUGIN_ROOT} to a real path and exports it as an env var on Cowork, where shell form (§2.1/§2.2) failed both.
Shows what skill-body CLAUDE_PLUGIN_ROOT and friends substitute to on Mac Cowork, whether the VM Bash tool can use that path, and whether the Read tool can read a bundled file at that host path.
Proves whether a skill frontmatter PreToolUse Bash hook fires on Cowork by emitting only a block decision (no echo). A marked bash should be blocked even though no frontmatter stdout surfaces.
| name | 01-env-propagation |
| description | Probe env propagation across 3 process tiers (§1.1). Compares which CLAUDE_* env vars are set in plugin-level hook vs skill frontmatter hook vs Bash tool subprocess. |
| user-invocable | true |
| hooks | {"PreToolUse":[{"matcher":"Bash","hooks":[{"type":"command","command":"sid=\"${CLAUDE_SESSION_ID:-no-sid}\"; ver=\"${VERIFIER_VERSION_DIR:-v-unknown}\"; out_dir=\"$CLAUDE_PROJECT_DIR/findings/$ver/$sid\"; mkdir -p \"$out_dir\"; printf \"[01-FM %s] tag=fm-registered ROOT=[%s] DATA=[%s] PROJECT_DIR=[%s] OPT_HELLO=[%s] OPT_SECRET=[%s] SESSION_ID=[%s]\\n\" \"$(date -Iseconds)\" \"${CLAUDE_PLUGIN_ROOT:-(empty)}\" \"${CLAUDE_PLUGIN_DATA:-(empty)}\" \"${CLAUDE_PROJECT_DIR:-(empty)}\" \"${CLAUDE_PLUGIN_OPTION_HELLO_MESSAGE:-(empty)}\" \"${CLAUDE_PLUGIN_OPTION_API_SECRET:-(empty)}\" \"${CLAUDE_SESSION_ID:-(empty)}\" >> \"$out_dir/probe.log\""}]}]} |
§1.1 の env 伝播 3 階層を観測します。
次の bash を順に実行：
proj="${CLAUDE_PROJECT_DIR:-$PWD}"
ver="${VERIFIER_VERSION_DIR:-v-unknown}"
sid="${CLAUDE_SESSION_ID:-no-sid}"
out_dir="$proj/findings/$ver/$sid"
mkdir -p "$out_dir"
{
printf '[01-BODY %s] tag=alive-check\n' "$(date -Iseconds)"
printf '[01-BODY] CLAUDE_PLUGIN_ROOT=[%s]\n' "${CLAUDE_PLUGIN_ROOT-(unset)}"
printf '[01-BODY] CLAUDE_PLUGIN_DATA=[%s]\n' "${CLAUDE_PLUGIN_DATA-(unset)}"
printf '[01-BODY] CLAUDE_PROJECT_DIR=[%s]\n' "${CLAUDE_PROJECT_DIR-(unset)}"
printf '[01-BODY] CLAUDE_CODE_REMOTE=[%s]\n' "${CLAUDE_CODE_REMOTE-(unset)}"
printf '[01-BODY] CLAUDE_PLUGIN_OPTION_HELLO_MESSAGE=[%s]\n' "${CLAUDE_PLUGIN_OPTION_HELLO_MESSAGE-(unset)}"
printf '[01-BODY] CLAUDE_PLUGIN_OPTION_API_SECRET=[%s]\n' "${CLAUDE_PLUGIN_OPTION_API_SECRET-(unset)}"
printf '[01-BODY] CLAUDE_SKILL_DIR=[%s]\n' "${CLAUDE_SKILL_DIR-(unset)}"
printf '[01-BODY] CLAUDE_SESSION_ID=[%s]\n' "${CLAUDE_SESSION_ID-(unset)}"
printf '[01-BODY] CLAUDE_CODE_ENTRYPOINT=[%s]\n' "${CLAUDE_CODE_ENTRYPOINT-(unset)}"
printf '[01-BODY] CLAUDE_CODE_EXECPATH=[%s]\n' "${CLAUDE_CODE_EXECPATH-(unset)}"
printf '[01-BODY] ----- all CLAUDE_* -----\n'
env | grep '^CLAUDE_' | sort
} | tee -a "$out_dir/probe.log"
proj="${CLAUDE_PROJECT_DIR:-$PWD}"
ver="${VERIFIER_VERSION_DIR:-v-unknown}"
sid="${CLAUDE_SESSION_ID:-no-sid}"
echo "=== hooks.log tail (plugin-level env snapshot) ==="
tail -n 80 "$proj/findings/$ver/$sid/hooks.log"
echo
echo "=== probe.log tail (frontmatter + body env) ==="
tail -n 40 "$proj/findings/$ver/$sid/probe.log"
完了したら exit。./scripts/assert.sh 01 で 3 層の subclaim を判定します。