How do I install the 06 Marketplace Cache skill?

Run npx skillmds@latest add kazukinagata/06-marketplace-cache in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

Is 06 Marketplace Cache safe to use?

This skill has not completed SkillMD's automated safety review yet. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with 06 Marketplace Cache?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is 06 Marketplace Cache free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published 06 Marketplace Cache?

kazukinagata (@kazukinagata) published this skill. Their other Agent Skills are listed on their SkillMD profile.

06 Marketplace Cache by kazukinagata

Name: 06 Marketplace Cache
Author: kazukinagata

06 Marketplace Cache

Compare CLAUDE_PLUGIN_ROOT with the marketplace cache path (§1.6). Docs say plugins run from cache; observation showed they run from source. This probe lets you classify the current behavior as PASS (finding holds) or DOC-ALIGNED (cache is now used).

kazukinagata Updated Sep 17, 2026

File contents

06-marketplace-cache

§1.6 — claude plugin install した plugin が cache から実行されるか、source から実行されるかを判定。

事前準備：./scripts/install-marketplace.sh で正式 install 経路を通していること（--plugin-dir の ephemeral では §1.6 の判定不可）。

step 1: invoke 時の CLAUDE_PLUGIN_ROOT と cache dir を比較

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 '[06-BODY %s] tag=alive-check\n' "$(date -Iseconds)"
  printf '[06-BODY] CLAUDE_PLUGIN_ROOT=[%s]\n' "${CLAUDE_PLUGIN_ROOT-(unset)}"
  printf '[06-BODY] -- candidate cache dirs --\n'
  find "$CLAUDE_CONFIG_DIR/plugins/cache" -name plugin.json -maxdepth 5 2>/dev/null | sort | head -10
  printf '[06-BODY] -- candidate marketplaces --\n'
  find "$CLAUDE_CONFIG_DIR/plugins/marketplaces" -name marketplace.json -maxdepth 5 2>/dev/null | head -5
  # Compare
  installed_plugin_json=$(find "$CLAUDE_CONFIG_DIR/plugins/cache" -path '*verifier*/plugin.json' -maxdepth 5 2>/dev/null | head -1)
  if [ -n "$installed_plugin_json" ]; then
    cache_dir=$(dirname "$installed_plugin_json")
    printf '[06-BODY] cache_dir=[%s]\n' "$cache_dir"
    if [ "$CLAUDE_PLUGIN_ROOT" = "$cache_dir" ]; then
      printf '[06-BODY] VERDICT=DOC-ALIGNED (root == cache, cache is used at runtime)\n'
    else
      printf '[06-BODY] VERDICT=PASS (root != cache, finding holds: source path used at runtime)\n'
    fi
  else
    printf '[06-BODY] VERDICT=UNKNOWN (no cache plugin.json found)\n'
  fi
} | tee -a "$out_dir/probe.log"

完了して exit、./scripts/assert.sh 06。

---name: 06-marketplace-cachedescription: Compare CLAUDE_PLUGIN_ROOT with the marketplace cache path (§1.6). Docs say plugins run from cache; observation showed they run from source. This probe lets you classify the current behavior as PASS (finding holds) or DOC-ALIGNED (cache is now used).---# 06-marketplace-cache§1.6 — `claude plugin install` した plugin が cache から実行されるか、source から実行されるかを判定。**事前準備**：`./scripts/install-marketplace.sh` で正式 install 経路を通していること（`--plugin-dir` の ephemeral では §1.6 の判定不可）。## step 1: invoke 時の CLAUDE_PLUGIN_ROOT と cache dir を比較```bashproj="${CLAUDE_PROJECT_DIR:-$PWD}"ver="${VERIFIER_VERSION_DIR:-v-unknown}"sid="${CLAUDE_SESSION_ID:-no-sid}"out_dir="$proj/findings/$ver/$sid"mkdir -p "$out_dir"{ printf '[06-BODY %s] tag=alive-check\n' "$(date -Iseconds)" printf '[06-BODY] CLAUDE_PLUGIN_ROOT=[%s]\n' "${CLAUDE_PLUGIN_ROOT-(unset)}" printf '[06-BODY] -- candidate cache dirs --\n' find "$CLAUDE_CONFIG_DIR/plugins/cache" -name plugin.json -maxdepth 5 2>/dev/null | sort | head -10 printf '[06-BODY] -- candidate marketplaces --\n' find "$CLAUDE_CONFIG_DIR/plugins/marketplaces" -name marketplace.json -maxdepth 5 2>/dev/null | head -5 # Compare installed_plugin_json=$(find "$CLAUDE_CONFIG_DIR/plugins/cache" -path '*verifier*/plugin.json' -maxdepth 5 2>/dev/null | head -1) if [ -n "$installed_plugin_json" ]; then cache_dir=$(dirname "$installed_plugin_json") printf '[06-BODY] cache_dir=[%s]\n' "$cache_dir" if [ "$CLAUDE_PLUGIN_ROOT" = "$cache_dir" ]; then printf '[06-BODY] VERDICT=DOC-ALIGNED (root == cache, cache is used at runtime)\n' else printf '[06-BODY] VERDICT=PASS (root != cache, finding holds: source path used at runtime)\n' fi else printf '[06-BODY] VERDICT=UNKNOWN (no cache plugin.json found)\n' fi} | tee -a "$out_dir/probe.log"```完了して exit、`./scripts/assert.sh 06`。

Frequently asked questions