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auth-security

Authentication and authorization security, JWT lifecycle, OAuth 2.1 and OIDC flows, PKCE, and RBAC/ABAC access control.

Skill by arvnfly

IndexedMIT★ 1
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Works with Claude Code, Claude apps, Codex, Cursor, Gemini CLI, GitHub Copilot, VS Code, OpenCode, Goose, Windsurf. Read the repository before you give any tool access to your data.

npx agentmarket install skill/arvnfly-auth-security

Asks which of your tools to add it to (Claude Code, Codex, Cursor, VS Code, Windsurf, Gemini CLI, Claude Desktop) and shows the change first. See https://agentmart.dev/cli.

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About

Authentication and authorization security, JWT lifecycle, OAuth 2.1 and OIDC flows, PKCE, and RBAC/ABAC access control.

Use cases: security, agent-building

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Permissions

What this skill can do and what it asks for, from its SKILL.md and code. Checked Nov 1, 2026.

Tools
No tools found
Secrets
None asked for
Install scripts
None found

Network hosts it talks to 1

  • codeload.github.com · found in install command

Files it touches

  • ~/.claude/skills/auth-security

What's inside

Skill name
auth-security
Description
Authentication and authorization security, JWT lifecycle, OAuth 2.1 and OIDC flows, PKCE, and RBAC/ABAC access control.
License
MIT
Instructions
31 lines in SKILL.md · view on GitHub

Files (1)

  • SKILL.md

SKILL.md (first lines)

# Authentication & Access Control Security Protocol

When implementing login, session tokens, identity providers, or role permissions, enforce these standards.

---

## 1. Token Lifecycles & Storage

1. **Short-Lived Access Tokens**:
   - Access tokens should expire in 10-15 minutes.
   - Refresh tokens should be long-lived (e.g. 7-30 days) and stored in HttpOnly; Secure; SameSite=Lax cookies, never in localStorage.
2. **Refresh Token Rotation**:
   - Invalidate the old refresh token immediately upon issuing a new pair.
   - If an invalidated refresh token is reused, revoke the entire token family immediately (indicates token theft).

---

## 2. OAuth 2.1 & PKCE

1. Always use Proof Key for Code Exchange (PKCE) for both public (SPA, mobile) and confidential clients.
2. Eliminate the deprecated OAuth 2.0 Implicit Flow.
3. Validate state and nonce parameters strictly to prevent CSRF authentication replay attacks.

---

## 3. RBAC & ABAC Enforcement

1. Perform authorization checks at the data service/controller boundary, never rely solely on frontend UI hiding.
2. Enforce tenancy boundaries: Every query must verify that the requesting user's organization matches the target resource.

From arvnfly/VIBE-CODE-SKILLS, MIT.

More from arvnfly/VIBE-CODE-SKILLS

Signals

Stars
1
Forks
0
Open issues
0
Last commit (this folder)
Oct 19, 2026 (16 days ago)

From GitHub (fetched Oct 24, 2026).

Details

License
MIT
Repository
github.com/arvnfly/VIBE-CODE-SKILLS
First seen
Oct 24, 2026
Last checked
Oct 24, 2026
Source
GitHubgithub-graphql

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Cite this page

auth-security skill. Agent Mart. https://agentmart.dev/skills/arvnfly-auth-security (last updated 2026-10-24)