Verified Agent Identity

This is a decentralized identity system for AI agents built on the Billions Network and iden3 protocol. It lets you create Ethereum-based DIDs, link them to human owners via ERC-8004 attestations, and generate cryptographic proofs for authentication. The main use cases are Know Your Agent workflows and handling HTTP 402 Payment Required responses by signing payment headers. Everything lives in a local directory with your private keys, which can be encrypted with a master key or stored in plaintext. The guardrails are strict: you have to check for existing identities before running most scripts, and you're explicitly forbidden from manual crypto operations or file manipulation if something breaks. It's a serious identity tool with training wheels bolted on.

skills.sh installs: 8.2K
GitHub stars: 758
last updated: Jul 14, 2026

View on GitHub

Install

$ npx -y skills add billionsnetwork/verified-agent-identity --skill verified-agent-identity --agent claude-code

Installs into .claude/skills of the current project.

Files

When to Use This Skill

This skill covers two capabilities. Read the router table below, then load the relevant reference before proceeding.

Situation	Reference to load
Create, list, link, verify, or sign with a decentralized identity (DID)	`reference/identity/SKILL.md`
Handle a 402 Payment Required HTTP response	`reference/x402/SKILL.md`

Always read the appropriate reference SKILL.md before running any script. If a task spans both (e.g. you need an identity before you can sign a 402 payment), read both.

Quick Overview

Identity — Create Ethereum-based DIDs on the Billions Network, link them to a human owner, and prove ownership via challenge/response signing.
x402 Payment — When a server returns 402 Payment Required, build a signed PAYMENT-SIGNATURE header so you can retry the request and gain access.