No red flags found in any of the 11 categories — no credential harvesting, no data exfiltration, no curl-pipe-shell installer. Scanned against the SlowMist agent-security taxonomy, refreshed every 8 hours. Full audit →
by majiayu000 · Claude Skill · ★ 285
Last updated: · Indexed by AgentSkillsHub · Auto-synced every 8h
🔒 Is spellbook safe to install? View the security audit →
Spellbook 82 Cross-Runtime Skills One Command Install A cross-runtime skill library for Claude Code, Codex, and multi-agent workflows. Quick Start • Runtime Targets • Pick a Workflow • Skills • Agents • Changelog • Release Status • Contributing • 中文 Rename notice: Spellbook was formerly Claude Arsenal. Claude Code remains a first-class target; the new name reflects the broader roadmap for Claude Code, Codex, and cross-runtime agent skills. See the migration note for details. #
| Stars | 285 |
| Forks | 26 |
| Language | Python |
| Category | Claude Skill |
| License | MIT |
| Quality Score | 73.2148069972754/100 |
| Last Updated | 2026-09-19 |
| Created | 2025-12-09 |
| Platforms | claude-code, codex, python |
| Est. Tokens | ~17k |
These tools work well together with spellbook for enhanced workflows:
Looking for a spellbook alternative? If you're comparing spellbook with other claude skill tools, these 6 projects are the closest alternatives on Agent Skills Hub — ranked by topic overlap, star count, and community traction.
Claude Code plugin for Elixir/Phoenix/LiveView — 26 specialist agents, Iron Laws enforcement, and Tidewave MCP
Professional Claude Code marketplace with 140 development tools: 67 skills, 28 commands, 30 agents, 15 workflo
Help your AI agent finish the job: solve the right problem, keep changes focused, and show what was verified.
Spec-driven development with smart compaction. Claude Code plugin combining Ralph Wiggum loop with structured
Curated AI coding agent skills and AGENTS.md playbooks for Codex, Claude Code, Cursor, OpenClaw, and other SKI
A collection of AI agent skills for Clawdbot, Claude Code, Codex
Explore other popular claude skill tools:
spellbook is Cross-runtime skills for Claude Code, Codex, and multi-agent workflows.. It is categorized as a Claude Skill with 285 GitHub stars.
spellbook is primarily written in Python. It covers topics such as agent-skills, ai-agent-skills, ai-agents.
You can find installation instructions and usage details in the spellbook GitHub repository at github.com/majiayu000/spellbook. The project has 285 stars and 26 forks, indicating an active community.
spellbook is released under the MIT license, making it free to use and modify according to the license terms.
The top alternatives to spellbook on Agent Skills Hub include claude-elixir-phoenix, luxor-claude-marketplace, claude-code-skills. Each offers a different approach to the same problem space — compare them side-by-side by stars, quality score, and community activity.
Grades come from a rule-based scan built on the SlowMist agent-security taxonomy, covering 11 red-flag categories including credential harvesting, data exfiltration, and curl | sh installers. It is a first-layer scan, not a manual audit — we say so rather than overstate it.
The scale of the problem is documented independently: Liu et al. (2026), in a study of 31,132 agent skills, report that 26.1% contain security vulnerabilities. Our own full-catalog census is published as a citable open dataset.
Sources & who's responsible: