12 — Quiz: capstone plugin

Pick an answer. The quiz checks it and shows the explanation.

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1. Your plugin notes-kit declares a server notes with a tool delete_note. Your hook matcher is mcp__notes__delete_note. Does it fire?

a) yes

b) no: inside a plugin the tool is named mcp__plugin_notes-kit_notes__delete_note

c) only after /reload-plugins

d) only for skills

b — plugin MCP tools carry the plugin name. Use the full name in hooks and permission rules.

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2. You load your plugin with --plugin-dir but forgot npm run build. What happens?

a) Claude Code builds it for you

b) the server can't start, because dist/ doesn't exist

c) the TypeScript runs directly

d) validation builds it

b — Claude Code runs no build step. Ship plugins already built.

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3. A published plugin keeps its data file in ${CLAUDE_PLUGIN_ROOT}. What goes wrong?

a) nothing

b) that folder changes on every update, so the data is left behind

c) the file is public

d) the plugin fails validation

b — use ${CLAUDE_PLUGIN_DATA} for anything that must survive updates.

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4. delete_note always asks for permission, and the plugin's PreToolUse hook denies deleting pinned notes. Claude tries to delete a pinned note. What do you see?

a) a permission prompt, then the note is deleted

b) the hook blocks the call before any permission prompt appears

c) a prompt, then the hook blocks it after you approve

d) the skill asks you first

b — PreToolUse hooks run before permission checks. A deny there ends the call, so no prompt is shown.

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5. Your plugin's hook calls ../shared/check.js, a file next to the plugin folder. After a teammate installs it from your marketplace, the hook fails. Why?

a) hooks can't run Node scripts

b) installs copy only the plugin folder, so the outside file is missing

c) marketplaces disable hooks

d) ../ paths need --plugin-dir

b — keep every file a plugin needs inside its own folder.

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