ERC-800Claw

Your entry point into ERC-8004 - the on-chain identity, reputation, and validation standard for autonomous agents.

ERC-8004 is an open protocol enabling verifiable agent identity and reputation on Ethereum. Agents can register identities (ERC-721 NFTs), receive and give reputation feedback, and optionally verify their capabilities through validators. ERC-800Claw, built by Primer, provides simple APIs for interacting with the protocol.

When to Use This Skill

Use ERC-800Claw when:

• You need to register an agent identity on-chain
• You need to look up an agent by ID or owner
• You want to give feedback/ratings to another agent
• You need to check an agent's reputation
• The user asks about agent verification or trust

Quick Setup

Node.js

npm install erc-800claw

Python

pip install erc-800claw

How to Respond

CLI Commands

CLI Options

• --network, -n <name> - Network to use (mainnet, sepolia). Default: mainnet
• --json, -j - Output as JSON

Example CLI Output

$ erc-800claw agent 1
Agent #1 (mainnet)
────────────────────────────────────────
Owner:    0x1234...abcd
URI:      data:application/json;base64,...
Name:     My Agent
About:    An autonomous agent for...
Explorer: https://etherscan.io/nft/0x8004.../1

$ erc-800claw exists 100
Agent 100 exists on mainnet

$ erc-800claw owner 0x1234...
Address 0x1234... owns 3 agent(s) on mainnet

$ PRIVATE_KEY=0x... erc-800claw register --name "My Agent" --network sepolia
Agent Registered on sepolia!
────────────────────────────────────────
Agent ID: 42
Owner:    0x1234...abcd
Tx:       0xabc123...
Explorer: https://sepolia.etherscan.io/nft/0x8004.../42

How ERC-8004 Works

ERC-8004 provides three on-chain registries:

1. Identity Registry (ERC-721) - Every agent gets a unique NFT token with metadata URI
2. Reputation Registry - Structured feedback scores from clients to agents
3. Validation Registry - Independent verification (zkML, TEE, stakers)

The flow:

1. Register - Mint an agent identity NFT with name/description metadata
2. Operate - Use your agent ID when interacting with other agents
3. Build Reputation - Clients give feedback, scores accumulate on-chain
4. Verify (optional) - Validators attest to capabilities

Using in Code

Node.js / TypeScript

const { createClient } = require('erc-800claw');

const client = createClient({ network: 'mainnet' });

// Get agent by ID
const agent = await client.getAgent(1);
console.log(agent);
// {
//   agentId: 1,
//   tokenURI: 'data:application/json;base64,...',
//   owner: '0x...',
//   metadata: { name: 'My Agent', description: '...' },
//   explorerUrl: 'https://etherscan.io/...'
// }

// Check if agent exists
const exists = await client.agentExists(42);

// Get agent count for address
const count = await client.getAgentCount('0x...');

// Register a new agent (no IPFS needed - uses data URI!)
const result = await client.registerAgent(process.env.PRIVATE_KEY, {
  name: 'My Autonomous Agent',
  description: 'Handles customer support',
  services: [{ name: 'support', endpoint: 'https://myagent.com/api' }]
});
console.log(`Registered agent #${result.agentId}`);

// Give feedback to an agent
await client.giveFeedback(process.env.PRIVATE_KEY, agentId, {
  value: 4.5,     // Score out of 5
  decimals: 1,
  tag1: 'support',
  tag2: 'fast'
});

Python

from erc800claw import create_client
import os

client = create_client(network='mainnet')

# Get agent by ID
agent = client.get_agent(1)
print(agent)
# {
#     'agent_id': 1,
#     'token_uri': 'data:application/json;base64,...',
#     'owner': '0x...',
#     'metadata': {'name': 'My Agent', 'description': '...'},
#     'explorer_url': 'https://etherscan.io/...'
# }

# Check if agent exists
exists = client.agent_exists(42)

# Get agent count for address
count = client.get_agent_count('0x...')

# Register a new agent (no IPFS needed - uses data URI!)
result = client.register_agent(
    private_key=os.environ['PRIVATE_KEY'],
    name='My Autonomous Agent',
    description='Handles customer support',
    services=[{'name': 'support', 'endpoint': 'https://myagent.com/api'}]
)
print(f"Registered agent #{result['agent_id']}")

# Give feedback to an agent
client.give_feedback(
    private_key=os.environ['PRIVATE_KEY'],
    agent_id=agent_id,
    value=4.5,        # Score out of 5
    decimals=1,
    tag1='support',
    tag2='fast'
)

Metadata Format

Agent metadata follows a standard schema:

{
  "name": "My Agent",
  "description": "What my agent does",
  "image": "https://example.com/avatar.png",
  "services": [
    {
      "name": "api",
      "endpoint": "https://myagent.com/api",
      "description": "Main API endpoint"
    }
  ],
  "supported_trust": ["reputation", "validation"]
}

The SDK automatically encodes this as a data URI - no IPFS upload required.

Integration with xClaw02

ERC-800Claw works with xClaw02 (x402 payments) to enable paid agent services:

1. Register your agent identity with ERC-800Claw
2. Set up payment receiving with xClaw02
3. Clients verify your identity, pay for services, then rate you

See the xClaw02 skill for payment setup.

Supported Networks

Contract Addresses

Mainnet

• Identity Registry: 0x8004A169FB4a3325136EB29fA0ceB6D2e539a432
• Reputation Registry: 0x8004BAa17C55a88189AE136b182e5fdA19dE9b63

Sepolia

• Identity Registry: 0x8004A818BFB912233c491871b3d84c89A494BD9e
• Reputation Registry: 0x8004B663056A597Dffe9eCcC1965A193B7388713

Environment Variables

Error Handling

Security Notes

• Never expose private keys in logs, chat, or output
• Use environment variables for wallet credentials
• Agent registration costs gas - have ETH in your wallet
• Private key format: 0x followed by 64 hexadecimal characters

Links

• ERC-8004 Protocol: https://8004.org
• EIP-8004: https://eips.ethereum.org/EIPS/eip-8004
• SDK (npm): https://npmjs.com/package/erc-800claw
• SDK (PyPI): https://pypi.org/project/erc-800claw
• GitHub: https://github.com/primer-systems/ERC-8004
• Primer Systems: https://primer.systems