Spellbook plugin for Grok Build

Name: Spellbook
Author: majiayu000

Community Claude Code plugin, installs in GrokPluginAutomation

Cross-runtime skills for Claude Code, Codex, and multi-agent workflows.

How to install Spellbook in Grok Build

1. Add this repo as a plugin marketplace in Grok Build (once per computer):

grok plugin marketplace add majiayu000/spellbook

2. Install the plugin:

grok plugin install idea-coach@majiayu000/spellbook --trust

✓ Install-checked in Grok Buildchecked Oct 18, 2026

Review before you trust it. --trust lets this plugin's hooks, MCP servers and scripts run code on your computer. It's a community repo that neither xAI nor GrokStacks has reviewed, so read its code first.

This repo's marketplace has 2 plugins; we checked idea-coach. Install another the same way: grok plugin install <name>@majiayu000/spellbook --trust (names under 'What it contains'). Then start a new Grok session, or press r in /plugins, to load it.

Inside Grok Build: type /plugins, open the Marketplace tab, press a and add majiayu000/spellbook, then select idea-coach and press i.

Command format: Grok Build's plugin guide

What we checked: on Oct 18, 2026 it installed with grok 1.0.62 and Grok found 6 skills, 2 slash commands. That's an install check only: we haven't run it in a live Grok session.

What it contains

Skills (6)

idea-analogist — 想法群聊室 — 类比者角色。被 idea-team 主编排器调用，或用户单独说"类比一下"、"别的行业有没有"、"yes-and 扩展"、"X 让你想到什么"、"跨界启示"时触发。**专门做跨界类比 + yes-and 扩展——不评判、不挑刺、不要求事实证据**。Do NOT use when 用户要数据（用 `idea-research`）、要反方意见（用 `idea-devils-advocate`）、或要严谨论证（类比是启发，不是论证）。
idea-devils-advocate — 想法群聊室 — 反方角色。被 idea-team 主编排器调用，或用户单独说"反方意见"、"挑这个想法的刺"、"为什么会失败"、"找漏洞 / 反例"、"devil's advocate"时触发。**专门挑漏洞、找隐藏假设、给反例——不安慰、不"也许可以这样"、不全盘否定**。Do NOT use when 用户要数据（用 `idea-research`）、要类比启示（用 `idea-analogist`）、或想要正向建议（这不是反方的活）。
idea-research — 想法群聊室 — 调研员角色。被 idea-team 主编排器调用，或用户单独说"调研一下 X"、"X 的现状/竞品/数据"、"找 2026 数据"、"事实底"时触发。**用 WebSearch 拉真实 2026 数据、列竞品、引来源——只给事实，不评判，不建议**。Do NOT use when 用户要评价想法好坏（那是反方）、或要跨界启示（那是类比者）、或已有 PRD 在跑（不需要这种调研）。插件内 skill 会由 `idea-coach` namespace 路由；ca
idea-team — 想法群聊室主持人 — 把一句话想法丢给多角色 AI 团队（调研员/反方/类比者）做查漏补缺。每个角色有自己的 voice，他们互相 @ 接话；你随时插话。**这是创意扩展工具，不打分、不否决、不堵路**。Use when 用户说"组个团队聊一下"、"开会讨论这个想法"、"找几个角度看看"、"群聊一下 X"、"team review X"，或调用插件命令 `/idea-coach:idea-team`。Do NOT use when 用户已决定做这个想法只要 PRD（用 `id
idea-to-product — 端到端产品教练 — 把一句话想法走到 PRD + 可点击 HTML 原型。会顶嘴、强制砍功能、用 Nielsen + Norman 做友好性硬检。Use when user 说"我有一个想法"、"想做一个产品"、"做 MVP"、"写 PRD"、"做用户友好的产品"，或调用插件命令 `/idea-coach:idea`。Do NOT use when 用户已有完整 PRD 在跑、明确说"只 brainstorm 不决策"、只想要 UI 设计（用 design-shotgun）、
idea — 想法到产品端到端教练 — 一句话想法走到 PRD + 可点击 HTML 原型（会顶嘴、强制砍功能）

Plugins in this marketplace (2)

idea-coach — Idea coaching toolkit: an opinionated end-to-end product coach (idea -> PRD -> clickable HTML prototype) plus a multi-role idea group chat for blind-spot discovery
rust-dev — Rust development toolkit with best practices, code review, performance optimization, and async Rust patterns

About this listing

Spellbook is a community plugin on GitHub by majiayu000, written as a Claude Code plugin that Grok Build installs. We install-checked it in Grok; we haven't run it in a live session or reviewed its code. When we installed it, Grok found 6 skills, 2 plugins in this marketplaces. Its license is MIT. We checked commit ed52af74bce8. It's one of 82 listings in the Automation category on GrokStacks.

Spellbook FAQ

How do I install Spellbook in Grok Build?

Add the repo as a marketplace with grok plugin marketplace add majiayu000/spellbook, then run grok plugin install idea-coach@majiayu000/spellbook --trust. This repo's marketplace has 2 plugins; we checked idea-coach. Install another the same way: grok plugin install <name>@majiayu000/spellbook --trust (names under 'What it contains'). Then start a new Grok session, or press r in /plugins, to load it.

Is Spellbook an official Grok Build plugin?

No. Spellbook is a community plugin on GitHub by majiayu000, not in xAI's official Grok Build marketplace. We checked that it installs and what Grok loads from it, but haven't run it in a live Grok session or reviewed its code.

What does Spellbook include?

According to what Grok loaded in our install check, Spellbook includes 6 skills, 2 plugins in this marketplaces: idea-analogist, idea-devils-advocate, idea-research, idea-team, idea-to-product, idea….

Details

Type: Plugin
Category: Automation
Source: Community Claude Code plugin, installs in Grok
License: MIT
Author: majiayu000
Keywords: agent-skills, ai-agent-skills, ai-agents, ai-coding-assistant, automation, claude, claude-code, claude-code-skills, code-review, codex, codex-skills, cross-runtime
Source repo: https://github.com/majiayu000/spellbook
Checked commit: ed52af74bce8
Homepage: https://majiayu000.github.io/spellbook/
Checked by GrokStacks: Install-checked in Grok Build on Oct 18, 2026; not run in a live session

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For maintainers: badge and embeds

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Markdown

[![Listed on GrokStacks](https://grokstacks.com/badge.svg)](https://grokstacks.com/p/spellbook/)

HTML

<a href="https://grokstacks.com/p/spellbook/"><img src="https://grokstacks.com/badge.svg" alt="Listed on GrokStacks" width="164" height="28"></a>

Embed card (static HTML and inline CSS, no JavaScript). Preview:

SpellbookCommunity plugin for Grok Build · 6 skills, 2 plugins in this marketplacesCross-runtime skills for Claude Code, Codex, and multi-agent workflows.View on GrokStacks →

<a href="https://grokstacks.com/p/spellbook/" style="display:block;max-width:380px;box-sizing:border-box;padding:14px 16px;border:1px solid #2a2e3c;border-radius:12px;background:#0a0b0f;color:#e8eaf0;font:14px/1.45 -apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;text-decoration:none"><span style="display:block;font-size:16px;font-weight:700;color:#e8eaf0">Spellbook</span><span style="display:block;margin:2px 0 8px;font-size:12px;color:#9aa0b1">Community plugin for Grok Build · 6 skills, 2 plugins in this marketplaces</span><span style="display:block;margin:0 0 10px;color:#c9cdd8">Cross-runtime skills for Claude Code, Codex, and multi-agent workflows.</span><span style="font-size:12px;font-weight:600;color:#7c9cff">View on GrokStacks →</span></a>

Markdown summary

**[Spellbook on GrokStacks](https://grokstacks.com/p/spellbook/)**: Community plugin for Grok Build with 6 skills, 2 plugins in this marketplaces. Install: `grok plugin install idea-coach@majiayu000/spellbook --trust` (after `grok plugin marketplace add majiayu000/spellbook`)

More on badges, embeds and keeping your listing up to date: GrokStacks for plugin authors.

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