siwa

Original：🇺🇸 English

Translated

SIWA (Sign-In With Agent) authentication for ERC-8004 registered agents.

3installs

Added on2026-02-28

NPX Install

npx skill4agent add bankrbot/openclaw-skills siwa

Sign-In With Agent (SIWA) lets AI agents authenticate with services using their ERC-8004 onchain identity.

bash

npm install @buildersgarden/siwa

Choose based on your wallet provider:

Import	Description
`@buildersgarden/siwa`	Core: signSIWAMessage, verifySIWA, createSIWANonce
`@buildersgarden/siwa/signer`	Signer factories
`@buildersgarden/siwa/erc8128`	ERC-8128 HTTP signing/verification
`@buildersgarden/siwa/receipt`	HMAC receipt helpers
`@buildersgarden/siwa/nonce-store`	Nonce stores (Memory, Redis, KV)
`@buildersgarden/siwa/next`	Next.js middleware
`@buildersgarden/siwa/express`	Express middleware
`@buildersgarden/siwa/hono`	Hono middleware
`@buildersgarden/siwa/fastify`	Fastify middleware