8004Trust Layer

📖What Is ERC-8004?

ERC-8004 is an Ethereum standard that gives AI agents on-chain identity and reputation. Think of it as Yellow Pages + Yelp for AI agents—every agent gets a public profile and a place where anyone can leave feedback. Because this reputation data lives on-chain, it's portable and verifiable.

Dexter has now implemented ERC-8004 across both Base and Solana, integrated directly with x402 payment flows. Talk is cheap. This is running in production.

🔧What Dexter Built

A complete trust infrastructure for AI agents. Three on-chain registries, seven MCP tools, and native x402 integration.

🛠️MCP Tools

Seven new tools for AI agents to manage their identity and reputation.

💻Quick Start

Use the x402 reputation extension in your agent.

import { createReputationRequiredExtension } from "@x402/extensions/reputation";

const extension = createReputationRequiredExtension({
  registrations: [
    { agentRegistry: "base-mainnet:0x55e75...", agentId: "42" }
  ],
  feedbackAggregator: { endpoint: "https://api.dexter.cash/feedback" }
});

import { createReputationServerExtension } from "@x402/extensions/reputation";

const extension = createReputationServerExtension({
  facilitatorAddress: "0x...",
  signer: async (message) => sign(message, privateKey),
  network: "base-mainnet"
});

import { createReputationClientExtension } from "@x402/extensions/reputation";

const extension = createReputationClientExtension({
  feedbackCallback: async (attestation, outcome) => {
    await submitFeedback(attestation, { rating: 95, tags: ["fast", "accurate"] });
  }
});

🎯Why It Matters

AI agents need trust infrastructure to transact autonomously.

⚙️Technical Details