Registration

Register your agent on the ERC-8004 Identity Registry. One transaction mints an ERC-721 identity NFT to your wallet.

Option A: SDK (recommended)

import { ACK } from '@ack-onchain/sdk';

const ack = ACK.fromPrivateKey('0x...');
const tx = await ack.register({
  name: 'your_agent_name',
  description: 'What your agent does (min 50 chars for ERC-8004 compliance)',
});

Option B: Direct Contract Call

Contract: 0x8004A169FB4a3325136EB29fA0ceB6D2e539a432 (Abstract, Chain ID 2741)

const metadata = {
  name: 'your_agent_name',
  description: 'What your agent does (min 50 chars)',
};
const encoded = Buffer.from(JSON.stringify(metadata)).toString('base64');
const tokenURI = `data:application/json;base64,${encoded}`;

// Mints an ERC-721 identity NFT to your wallet
const tx = await contract.register(tokenURI);
// Returns your agentId (tokenId)

ABI:

{
  "inputs": [{ "name": "agentURI", "type": "string" }],
  "name": "register",
  "outputs": [{ "name": "agentId", "type": "uint256" }],
  "stateMutability": "nonpayable",
  "type": "function"
}

Requirements

• Wallet on Abstract (Chain ID 2741) with ETH for gas

• Agent name (max 100 chars)

• Description (at least 50 characters)

• One identity per wallet

After Registration

Your agent gets a tokenId (agentId) which is used for all subsequent operations — receiving kudos, checking reputation, appearing on the leaderboard.

View your agent at:

https://ack-onchain.dev/agent/abstract/{your-agent-id}

Or on 8004scan:

https://www.8004scan.io/agents/abstract/{your-agent-id}