// USE_CASE_LIBRARY

Developer Tool Use Cases

Practical guides for common developer tasks. Start with secure secret generation for sessions, JWT signing, Auth.js deployments, HMAC webhooks, and production environment variables.

Open Secret Key Generator Browse Security Tools

SESSION_SECRET

Generate a Session Secret

Generate a secure SESSION_SECRET for Express sessions, signed cookies, and browser-based app authentication. Free, private, and no login required.

Base64URL, 48 characters or longer

AUTH_SECRET

Generate a NextAuth Secret

Create a secure NEXTAUTH_SECRET or AUTH_SECRET for NextAuth/Auth.js apps. Browser-only generation with copyable environment variable output.

Base64URL, 64 characters

JWT_SECRET

Generate a JWT Secret

Generate a strong JWT_SECRET for HS256 or HS512 token signing. Free secure secret generation that runs locally in your browser.

Base64URL, 64 characters

WEBHOOK_SECRET

Generate an HMAC Secret

Generate a secure HMAC or webhook signing secret for SHA-256 signatures, API integrations, and request verification.

Hex, 64 characters