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erc8004-patterns

Use when integrating ERC-8004 onchain agent identity. Covers agent identity registry, authentication, capability declaration, trust framework for AI agents interacting onchain. Deployed January 2026 on 20+ chains.

skills/erc8004-patterns/SKILL.md

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# ERC-8004 Onchain Agent Identity

## Overview

ERC-8004 establishes a standard for AI agent identity onchain. Deployed on January 29, 2026 across 20+ chains, it provides a registry for agents to declare their identity, capabilities, and trust relationships. This enables verifiable agent-to-agent and agent-to-protocol interactions.

## Core Interface

```solidity
interface IERC8004 {
    struct AgentIdentity {
        address agent;         // agent's onchain address (EOA or contract)
        bytes32 identityHash;  // hash of offchain identity metadata
        uint64 registeredAt;