auth-implementation-patterns

auth-implementation-patterns is a skill for Claude Code, Codex from sickn33/agentic-awesome-skills. It costs 23 tokens per session (332 once invoked), scanned A, original, MIT.

A guide to implementing authentication and authorization: checking who a user is and what that user is allowed to do. It covers sessions, tokens, OAuth2, social login, single sign-on, and role-based access control.

In plain words
What is it for?
Use it to add login, secure REST or GraphQL APIs, manage sessions and tokens, design access policies, or troubleshoot authentication problems.
Why use it?
It helps avoid weak identity flows, excessive permissions, exposed credentials, and unclear access rules in applications and APIs.

Skill for Claude CodeCodex

Part of the agentic-awesome-skills plugin — 196 skills shipped together

About the project

AAS Core is a local control plane for coding agents that lets them search a large catalogue of skills, choose a stack, validate it, and create a reproducible plan. It is used to assemble and review agent workflows through its CLI, local MCP server, catalogue, plugins, and Workbench. The catalogue add-ons provide the skills, plugins, bundles, and workflows that AAS Core helps agents select and validate.

sickn33/agentic-awesome-skills · 45,983 stars · on GitHub · sickn33.github.io

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/sickn33/agentic-awesome-skills/auth-implementation-patterns
Any agent
npx skills add sickn33/agentic-awesome-skills --skill auth-implementation-patterns
Clone the repo
git clone --depth 1 https://github.com/sickn33/agentic-awesome-skills

Made for: Claude Code, Codex.

Or install agentic-awesome-skills, the plugin that ships this one along with the rest of its 196 skills.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for auth-implementation-patterns

README.md
[![agentmods](https://agentmods.dev/badge/skills/sickn33/agentic-awesome-skills/auth-implementation-patterns.svg)](https://agentmods.dev/skills/sickn33/agentic-awesome-skills/auth-implementation-patterns)
Your own site
<a href="https://agentmods.dev/skills/sickn33/agentic-awesome-skills/auth-implementation-patterns"><img src="https://agentmods.dev/badge/skills/sickn33/agentic-awesome-skills/auth-implementation-patterns.svg" alt="Measured on agentmods" height="20"></a>
Per session 23 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 332 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00023 $0.00332
Opus 5 $0.00012 $0.00166
Sonnet 5 $0.00005 $0.00066
Haiku 4.5 $0.00002 $0.00033

Measured today against content hash 2b5e3d0b0cd2, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

auth-implementation-patterns scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured today.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

Copies of this mod

8 near-identical copies found in the catalogue:

plugins/agentic-awesome-skills-claude/skills/auth-implementation-patterns/SKILL.md · 48 lines

What it actually says

Authentication & Authorization Implementation Patterns

Build secure, scalable authentication and authorization systems using industry-standard patterns and modern best practices.

Use this skill when

  • Implementing user authentication systems
  • Securing REST or GraphQL APIs
  • Adding OAuth2/social login or SSO
  • Designing session management or RBAC
  • Debugging authentication or authorization issues

Do not use this skill when

  • You only need UI copy or login page styling
  • The task is infrastructure-only without identity concerns
  • You cannot change auth policies or credential storage

Instructions

  • Define users, tenants, flows, and threat model constraints.
  • Choose auth strategy (session, JWT, OIDC) and token lifecycle.
  • Design authorization model and policy enforcement points.
  • Plan secrets storage, rotation, logging, and audit requirements.
  • If detailed examples are required, open resources/implementation-playbook.md.

Safety

  • Never log secrets, tokens, or credentials.
  • Enforce least privilege and secure storage for keys.

Resources

  • resources/implementation-playbook.md for detailed patterns and examples.

Limitations

  • Use this skill only when the task clearly matches the scope described above.
  • Do not treat the output as a substitute for environment-specific validation, testing, or expert review.
  • Stop and ask for clarification if required inputs, permissions, safety boundaries, or success criteria are missing.
Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. today First seen · 48 lines · 23 tokens per session scan A 2b5e3d0b0cd2

Subscribe to this mod's changes

auth-implementation-patterns is a skill published in the GitHub repository sickn33/agentic-awesome-skills (45,983 stars, last pushed today), licensed MIT. It adds 23 tokens to every session and 332 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-05.