Authentication and Login skills for Claude Code and Codex
Skills for adding sign-in and securing access: Firebase Auth, Amazon Cognito, Neon Auth, Sign In With Google, OAuth 2.0 and 2.1 flows, DPoP tokens, Entra ID app registration and API authentication patterns. They give an agent a checked path through identity setup, where small mistakes are costly.
Highest-scoring authentication skills in the October 22, 2026 snapshot: auth-guide from makenotion/notion-cookbook (82/100), firebase-auth-basics from firebase/skills (82/100) and authorizing-api-requests from mailtrap/mailtrap-skills (80/100). Scores come from the Suede Skill Check.
- 16 listed skills
- 13 repositories
- 6 with full pages
11 from official publishers. 0 bundle scripts. 3 connect to an outside service. Listed in Developer Tools and Frameworks (8), Security (5), DevOps and Cloud (2), Data, Analytics and Databases (1).
All 16 authentication skills
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| Skill | Repository | What it does |
|---|---|---|
| auth-guide 82/100 · B | makenotion/notion-cookbook | Guides setting up third-party authentication for a Notion Worker, covering brokered credentials for API keys and tokens, OAuth, and plaintext environment secrets. |
| authorizing-api-requests 80/100 · B | mailtrap/mailtrap-skills | Guides authenticating and authorizing requests to Mailtrap APIs, including picking the auth header, choosing token scope, storing tokens safely, and resolving the account ID. |
| authsome 77/100 · C | agentrhq/authsome | Lets an agent call external services such as Gmail, GitHub, and Stripe with plain HTTP requests while a gateway injects the credentials automatically. |
| emblem-ai-react 78/100 · C | EmblemCompany/Agent-skills | Adds website authentication and wallet-enabled users to a React app using EmblemAuthProvider, ConnectButton, social, email, and wallet login, chat components, and React auth hooks. |
| firebase-auth-basics 82/100 · B | firebase/skills | Guides setting up and using Firebase Authentication for apps that need user sign-in, user management, or secure data access through auth rules. |
| oauth 80/100 · B | mcollina/skills | Implements OAuth 2.0 and 2.1 authorization flows in Fastify applications, including PKCE, client credentials, device flow, refresh token rotation, and JWT validation. |
| api-security-auth-pattern 71/100 · C | LambdaTest/agent-skills | Designs and documents authentication, authorization, and security patterns for any API. Use whenever the user asks about OAuth 2.0, JWT, API keys… |
| aws-auth 68/100 · D | aws/agent-toolkit-for-aws | Adds user authentication to web and mobile apps with Amazon Cognito (user pools and identity pools) and the AWS Amplify client auth libraries… |
| dpop-adoption 84/100 · B | google/skills | Implement and debug OAuth 2.0 DPoP (RFC 9449) refresh token sender-constraining for WebCrypto, Node.js ES6, and browser runtimes integrating with… |
| entra-app-registration 84/100 · B | microsoft/azure-skills | Guides Microsoft Entra ID app registration, OAuth 2.0 authentication, and MSAL integration. USE FOR: create app registration, register Azure AD app… |
| google-cloud-recipe-auth 72/100 · C | google/skills | Provides expert guidance on Identity and Access Management (IAM) and authenticating and authorizing to Google Cloud services and APIs, covering… |
| neon-auth 82/100 · B | neondatabase/agent-skills | Add authentication to a new app. Use for "add auth", "add login", Neon Auth (Managed Better Auth), identity routing, sign-up, sign-in, password… |
| secure-code-guardian 84/100 · B | jeffallan/claude-skills | Use when implementing authentication/authorization, securing user input, or preventing OWASP Top 10 vulnerabilities — including custom security… |
| sign-in-with-google-web 85/100 · B | google/skills | Implement, configure, and secure Sign In With Google (SiwG) using Google Identity Services (GIS / `https://accounts.google.com/gsi/client`) across… |
| spring-boot-engineer 84/100 · B | jeffallan/claude-skills | Generates Spring Boot 3.x configurations, creates REST controllers, implements Spring Security 6 authentication flows, sets up Spring Data JPA… |
| venice-auth 70/100 · C | veniceai/skills | Authenticate to the Venice API with a Bearer API key or with an x402 / SIWX wallet (EVM on Base, including EIP-1271 smart wallets, or Ed25519 on… |
How to choose authentication skills
Use your identity provider's own skill when there is one. Firebase, AWS, Google, Neon and Microsoft skills follow that provider's current setup.
These skills touch secrets. Check the environment variables listed under Before you install and keep client secrets out of source control.
Pair an implementation skill with a security review skill before shipping a new login flow.
Related topics
Secrets and Credentials 18Security Auditing and Review 108Google Cloud 146Supabase and Firebase 22AWS 151Azure 78Java and JVM 20React and Next.js 30
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