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auth-and-authorization-patterns

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Use this skill when implementing authentication (login, token issuance) or authorization (access control, permissions). Apply whenever the task involves login flows, JWT, OAuth2, session management, or RBAC.

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How to use this skill

Bring this guide into your coding agent with a prompt tailored to the tool you use.

  1. Open your project in Codex.
  2. Copy the prompt below and paste it into your agent.
  3. Review the proposed files and risks before you approve installation.
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I want to install this Agent Skill for this project in Codex.

Source SKILL.md: https://github.com/aiming-lab/MetaClaw/blob/HEAD/memory_data/skills/auth-and-authorization-patterns/SKILL.md

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First, summarize what it does, its dependencies, license status if identifiable, and any risks. Show the exact files you propose to add under .agents/skills/auth-and-authorization-patterns/. Do not write files or run scripts until I approve.

After I approve, install the complete skill folder, including required referenced files, into that project location. Verify it is discoverable, then tell me its actual invocation name and how to use it. Do not claim it is installed until you have verified it.

Copying this prompt does not install or run the skill. Review third-party files before use. Codex skill guide

Auth & Authorization Patterns

Authentication (who are you?):

  • Use a battle-tested library — do not roll your own crypto.
  • Hash passwords with bcrypt/argon2; never MD5/SHA1 for passwords.
  • Use short-lived JWTs (15–60 min) with refresh tokens; store refresh tokens securely.
  • Implement MFA for sensitive operations.

Authorization (what can you do?):

  • Check authorization on every request, not just at login.
  • Enforce RBAC or ABAC at the service layer, not the UI.
  • Apply principle of least privilege: grant minimal permissions needed.

OAuth2 / OIDC:

  • Use the Authorization Code flow with PKCE for user-facing apps.
  • Validate iss, aud, exp, and nonce claims on every token.

Session management:

  • Regenerate session ID after login (session fixation prevention).
  • Set HttpOnly and Secure flags on session cookies.