siwe

Implement SIWE authentication with nonce generation, message verification, and encrypted cookie sessions.

Updated Mar 19, 2026
One-click install
npx skills add https://github.com/involvex/aetheris --skill siwe-involvex
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: siwe
Source: https://github.com/involvex/aetheris/tree/main/.agents/skills/siwe
Command: npx skills add https://github.com/involvex/aetheris --skill siwe-involvex

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Sign-In with Ethereum (SIWE) authentication for Scaffold-ETH 2 projects replaces passwords with wallet-based login, enabling secure user sessions driven by cryptographic signatures.

Core Features & Use Cases

  • Nonce-based SIWE flow: generate a nonce, create a SIWE message, have the user sign it, and verify on the server to establish a session.
  • ERC-6492-compatible verification using Viem utilities to support smart wallets and on-chain validation.
  • Encrypted cookie-based sessions with iron-session, including domain validation to prevent replay and cross-site issues.
  • Typical SE-2 scenarios include user login, cross-wallet authentication, and persistent user sessions across frontend-backend stacks.

Quick Start

Integrate SIWE by following the steps to generate a nonce, construct a SIWE message, sign with the wallet, and verify to establish a session.

Frequently Asked Questions about siwe

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I implement Sign-In with Ethereum authentication in Scaffold-ETH 2?▼

Sign-In with Ethereum authentication in Scaffold-ETH 2 is implemented by generating a nonce, creating a SIWE message for the user to sign, and verifying the signature on the server to establish an encrypted cookie session.

Does SIWE authentication support smart contract wallets using Viem?▼

Yes, SIWE authentication supports smart contract wallets through ERC-6492-compatible verification using Viem utilities, enabling on-chain validation and signature verification for smart wallet users.

What is the best way to handle wallet-based login sessions in a Web3 application?▼

Wallet-based login sessions in a Web3 application are best handled by replacing passwords with cryptographic signature verification, establishing secure, persistent user sessions driven by nonce-based SIWE flows.

Can I use iron-session for Web3 session management with Ethereum wallets?▼

Yes, you can use iron-session for Web3 session management with Ethereum wallets to securely persist authenticated user sessions via encrypted cookies after verifying the SIWE message signature.

Why does Sign-In with Ethereum require nonce generation before signing?▼

Sign-In with Ethereum requires nonce generation before signing to prevent replay attacks, ensuring each authentication request is unique and securely tied to a specific domain and session.