Auth Security

Auth Security is an AI Engineering skill for Claude Code, published by majiayu000 in spellbook.

265 stars26 forkson majiayu000/spellbookAdded 2026/09/02+1% in starsRepository updated 2026/08/31

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Install in seconds

Install Auth Security

Copy Auth Security into your Claude Code skills folder. Run the command in your terminal, or review the source on GitHub before installing.

terminal

npx degit https://github.com/majiayu000/spellbook/tree/main/skills/auth-security ~/.claude/skills/auth-security

Requires Node.js. Downloads this skill only — not the rest of the repository — into your Claude Code skills folder.

Without Node.js

git clone https://github.com/majiayu000/spellbook.git

Clones the whole repository, then copy the skill’s own directory into your skills folder yourself.

In this catalog

Source file: skills/auth-security/SKILL.md in majiayu000/spellbook
Installs to: ~/.claude/skills/auth-security
Collection: One of 25 skills cataloged from this repository
Category: AI Engineering — 2631 skills

What Auth Security does

Auth Security covers OAuth 2.1 and JWT best practices for implementing login, API authorization, and token handling. Use it for PKCE flows, token rotation, secure storage, and JWT verification.

Auth Security is cataloged under AI Engineering on DirSkills. Auth Security comes from a repository tagged agent-skills, ai-agent-skills, ai-agents, ai-coding-assistant and automation.

Documentation

README

Excerpt

Auth Security

Core Principles

OAuth 2.1 — Follow RFC 9700 (January 2025)
PKCE Required — All clients must use PKCE
Short-lived Tokens — Access tokens expire in 5-15 minutes
Token Rotation — Refresh tokens are single-use
HttpOnly Storage — Browser tokens in HttpOnly cookies
Explicit Algorithm — Never trust JWT header algorithm
No backwards compatibility — Delete deprecated auth flows

OAuth 2.1 Key Changes

Deprecated Flows (DO NOT USE)

Flow	Status	Replacement
Implicit Grant	Removed	Authorization Code + PKCE
Password Grant	Removed	Authorization Code + PKCE
Auth Code without PKCE	Removed	Must use PKCE

Required: Authorization Code + PKCE

This is the opening of the README. Read the full README on GitHub.

Frequently asked about Auth Security

What else does majiayu000 publish alongside Auth Security?
Auth Security is one of 25 skills that DirSkills catalogs from majiayu000/spellbook, the repository it ships in. Its siblings there include AGENTS.md Scaffold, API Design and Agents Md Optimize. Each one is a separate skill with its own page in this directory, installs the same way Auth Security does, and is maintained by majiayu000 in that same repository. The rest of the collection is listed on the majiayu000/spellbook page.
How does Auth Security compare to other AI Engineering skills?
Auth Security ranks #2230 by stars among the 2631 AI Engineering skills in this catalog. The most-starred ones next to it are Architecture Decision Records, AI-First Engineering and Agentic OS. DirSkills ranks by the star count of the repository each skill ships in, so that order reflects how popular those repositories are rather than any review of Auth Security against them. Open each page to compare what they document and how they install.