ERC-8128: Ethereum HTTP Signatures

ERC-8128 extends RFC 9421 (HTTP Message Signatures) with Ethereum wallet signing. It enables HTTP authentication using existing Ethereum keys—no new credentials needed.

📚 Full documentation: erc8128.slice.so

When to Use

• API authentication — Wallets already onchain can authenticate to your backend
• Agent auth — Bots and agents sign requests with their operational keys
• Replay protection — Signatures include nonces and expiration
• Request integrity — Sign URL, method, headers, and body

Packages