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siwa-privy

Sign SIWA messages with Privy server wallets and register ERC-8004 agents on-chain.

43|12|Updated Feb 4, 2026
Search Tags:#authentication#signer#erc-8004#privy#siwa#server-wallet
One-click install
npx skills add https://github.com/builders-garden/siwa --skill siwa-privy
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: siwa-privy
Source: https://github.com/builders-garden/siwa/tree/main/packages/siwa-website/public/skills/privy
Command: npx skills add https://github.com/builders-garden/siwa --skill siwa-privy

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Privy-based server wallets enable SIWA authentication without exposing user keys, simplifying secure agent sign-in for on-chain identity.

Core Features & Use Cases

  • Server-wallet signing: Sign SIWA messages using Privy's managed wallets for scalable authentication.
  • On-chain identity provisioning: Register ERC-8004 agents on-chain via Privy's transaction API.
  • Use Case: Integrate Privy SIWA signer into your backend to authenticate agents and issue ERC-8128 receipts.

Quick Start

Install and configure the Privy SIWA signer in your backend to sign SIWA messages.

Frequently Asked Questions about siwa-privy

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

FAQPage Schema
How do I sign SIWA messages using Privy server wallets for backend authentication?▼

SIWA authentication with Privy server wallets enables secure agent sign-in for on-chain identity without exposing private user keys. It uses a backend Privy signer to process messages and register ERC-8004 agents on-chain, simplifying identity provisioning.

How do I register ERC-8004 agents on-chain using Privy?▼

You register ERC-8004 agents on-chain by integrating the Privy SIWA signer into your backend and utilizing Privy's transaction API. This provisions on-chain identity and issues ERC-8128 receipts for authenticated agents.

Do I need a configured walletId and walletAddress to use the Privy SIWA signer?▼

Yes, configuring a specific walletId and walletAddress is required. You must initialize a PrivyClient and pass these parameters to the createPrivySiwaSigner function to successfully execute server-wallet signing.

Can I issue ERC-8128 receipts by integrating a Privy SIWA signer into my backend?▼

Yes, integrating the Privy SIWA signer into your backend allows you to authenticate agents and issue ERC-8128 receipts. This is achieved by signing SIWA messages and registering ERC-8004 agents via Privy's transaction API.

What are the limitations of using Privy server wallets for SIWA authentication?▼

Using Privy server wallets for SIWA authentication is limited to backend flows requiring a PrivyClient, a configured walletId, and walletAddress. It is specifically designed for ERC-8004 agent registration and is not a client-side signing solution.

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