# 11 Block Target

> §2.4. Target skill for the block pair (11+12). After 12-block-self is invoked (registering its frontmatter PreToolUse:Skill hook), invoking 11-block-target should be blocked.

- Skill: `kazukinagata/11-block-target` (Agent Skill)
- Install (CLI): `npx skillmds@latest add kazukinagata/11-block-target`
- Raw SKILL.md: https://api.skillmd.com/api/skills/kazukinagata/11-block-target/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: kazukinagata (https://skillmd.com/u/kazukinagata)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/kazukinagata/11-block-target

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# 11-block-target

これはペアで動作する probe の **target 側** です。12-block-self の frontmatter hook が PreToolUse:Skill で block するべきスキル。

## step 1: alive-check

```bash
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 '[11-BODY %s] tag=alive-check (target ran — block did not fire)\n' "$(date -Iseconds)" | tee -a "$out_dir/probe.log"
```

`tag=alive-check` が log に出れば「block されなかった」、出なければ「block 成功」。