erc8128

Sign and verify HTTP requests with Ethereum wallet signatures via ERC-8128.

22|1|Updated Jan 28, 2026

Search Tags:#authentication #cli #library #ethereum #nonce #http-signatures

Ready to run

npx skills add https://github.com/slice-so/erc8128 --skill erc8128

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: erc8128
Source: https://github.com/slice-so/erc8128/tree/main/skill
Command: npx skills add https://github.com/slice-so/erc8128 --skill erc8128

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

Sign and verify HTTP requests using Ethereum wallets for API authentication.

Core Features & Use Cases

RFC-9421-compliant HTTP Signatures extended for Ethereum (ERC-8128)
Wallet-based signing and verification for APIs, agents, and servers
Replay protection with nonces and TTL
Configurable request binding and verification policy
CLI and library support for signing and verifying

Quick Start

Install the library and integrate the signer or verifier in your API to begin signing and validating requests with ERC-8128.

Frequently Asked Questions about erc8128

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

FAQPage Schema

How do I authenticate HTTP requests using an Ethereum wallet?▼

To authenticate HTTP requests using an Ethereum wallet, you can sign and verify requests using ERC-8128, an extension of RFC-9421 HTTP Signatures. This method applies wallet-based signatures to protect API endpoints, agents, and servers.

What is ERC-8128 for HTTP signature authentication?▼

ERC-8128 is an Ethereum extension for RFC-9421 HTTP Signatures that enables wallet-based API authentication. It allows backends and API gateways to verify signed HTTP requests, ensuring endpoints are protected by cryptographic wallet signatures.

How do I prevent replay attacks on signed HTTP API requests?▼

You can prevent replay attacks on signed HTTP requests by applying nonce-based replay protection and TTL configurations. The ERC-8128 standard includes these mechanisms to ensure intercepted requests cannot be maliciously reused.

Can I use a CLI to sign and verify Ethereum HTTP requests?▼

Yes, you can use a provided CLI to sign and verify Ethereum HTTP requests for API authentication. The implementation includes both a command-line interface and a library to integrate ERC-8128 wallet-based signing into your workflows.

Does ERC-8128 support configurable request binding for API gateways?▼

Yes, ERC-8128 supports configurable request binding and verification policies for API gateways. This allows backends to customize how HTTP signature components are validated when processing Ethereum wallet-signed requests.