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Erc 8004

  • 14 installs
  • 1.2k repo stars
  • Updated August 1, 2026
  • bankrbot/moltbot-skills

ERC-8004 is a Claude skill that registers an AI agent's identity and reputation on Ethereum mainnet using the ERC-8004 Trustless Agents standard.

About

ERC-8004 registers an AI agent's identity on Ethereum mainnet using the ERC-8004 Trustless Agents standard, minting an ERC-721 agent ID. A developer uses it to make an agent discoverable and to attach reputation and validation signals. It handles bridging ETH to mainnet, uploading the profile to IPFS, and calling register on the Identity Registry.

  • Registers AI agents onchain via ERC-8004 Identity Registry (agent gets an NFT)
  • Handles bridging ETH to mainnet, IPFS upload, and on-chain registration
  • Four registration paths: 8004.org UI, HTTP URL, IPFS via Pinata, or fully on-chain data URI

Erc 8004 by the numbers

  • 14 all-time installs (skills.sh)
  • Ranked #11,296 of 16,546 AI & Agent Building skills by installs in the Skillselion catalog
  • Data as of Aug 4, 2026 (Skillselion catalog sync)
At a glance

erc-8004 capabilities & compatibility

Needs mainnet ETH (~$5-20 gas per registration) and an optional Pinata JWT; Pinata has a free 1GB tier.

Capabilities
agent identity registration · ipfs upload · eth bridging · onchain reputation
Use cases
orchestration
Pricing
Bring your own API key
From the docs

What erc-8004 says it does

Register your AI agent on Ethereum mainnet with a verifiable on-chain identity, making it discoverable and enabling trust signals.
SKILL.md
**Identity Registry** - ERC-721 based agent IDs (your agent gets an NFT!)
SKILL.md
npx skills add https://github.com/bankrbot/moltbot-skills --skill erc-8004

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Listed on Skillselion
Installs14
repo stars1.2k
Last updatedAugust 1, 2026
Repositorybankrbot/moltbot-skills

What it does

Register an AI agent's identity on Ethereum mainnet using ERC-8004 (Trustless Agents) with IPFS profile and onchain registration.

Who is it for?

Developers who want an AI agent to have a verifiable, discoverable onchain identity with reputation signals.

Skip if: Projects that do not need onchain agent identity or cannot pay mainnet gas for registration.

When should I use this skill?

The user wants to register their agent identity on-chain, create an agent profile, claim an agent NFT, or set up agent reputation.

What you get

A registered ERC-8004 agent identity (NFT + agent ID) on Ethereum mainnet, discoverable with reputation support.

  • Registered onchain agent identity (agent ID + NFT)
  • IPFS-hosted agent registration file

By the numbers

  • 4 registration options (UI, HTTP URL, IPFS, data URI)
  • ~100-200k gas for registration

Files

SKILL.mdMarkdownGitHub ↗

ERC-8004: Trustless Agents

Register your AI agent on Ethereum mainnet with a verifiable on-chain identity, making it discoverable and enabling trust signals.

What is ERC-8004?

ERC-8004 is an Ethereum standard for trustless agent identity and reputation:

  • Identity Registry - ERC-721 based agent IDs (your agent gets an NFT!)
  • Reputation Registry - Feedback and trust signals from other agents/users
  • Validation Registry - Third-party verification of agent work

Website: https://www.8004.org Spec: https://eips.ethereum.org/EIPS/eip-8004

Contract Addresses

ChainIdentity RegistryReputation Registry
Ethereum Mainnet0x8004A169FB4a3325136EB29fA0ceB6D2e539a4320x8004BAa17C55a88189AE136b182e5fdA19dE9b63
Sepolia Testnet0x8004A818BFB912233c491871b3d84c89A494BD9e0x8004B663056A597Dffe9eCcC1965A193B7388713

Quick Start

1. Register Your Agent

# Full registration (creates profile, uploads to IPFS, registers on-chain)
./scripts/register.sh

# Or with custom values
NAME="My Agent" \
DESCRIPTION="An AI agent that does cool stuff" \
IMAGE="https://example.com/avatar.png" \
./scripts/register.sh

2. Bridge ETH to Mainnet (if needed)

# Bridge ETH from Base to Ethereum mainnet
./scripts/bridge-to-mainnet.sh 0.01

3. Update Agent Profile

# Update your agent's registration file
./scripts/update-profile.sh <agent-id> <new-ipfs-uri>

Environment Variables

VariableDescriptionRequired
PINATA_JWTPinata API JWT for IPFS uploadsNo (only for IPFS)
AGENT_NAMEAgent display nameNo (defaults to wallet ENS or address)
AGENT_DESCRIPTIONAgent descriptionNo
AGENT_IMAGEAvatar URLNo

Registration Options

Option 1: Use 8004.org frontend (easiest) Visit https://www.8004.org and register through the UI — handles IPFS automatically.

Option 2: HTTP URL (no IPFS needed) Host your registration JSON at any URL:

REGISTRATION_URL="https://myagent.xyz/agent.json" ./scripts/register-http.sh

Option 3: IPFS via Pinata

PINATA_JWT="your-jwt" ./scripts/register.sh

Option 4: Data URI (fully on-chain) Encode your registration as base64 — no external hosting needed:

./scripts/register-onchain.sh

Registration File Format

Your agent's registration file (stored on IPFS) follows this structure:

{
  "type": "https://eips.ethereum.org/EIPS/eip-8004#registration-v1",
  "name": "My Agent",
  "description": "An AI assistant for various tasks",
  "image": "https://example.com/avatar.png",
  "services": [
    {
      "name": "web",
      "endpoint": "https://myagent.xyz/"
    },
    {
      "name": "A2A",
      "endpoint": "https://myagent.xyz/.well-known/agent-card.json",
      "version": "0.3.0"
    }
  ],
  "x402Support": false,
  "active": true,
  "registrations": [
    {
      "agentId": 123,
      "agentRegistry": "eip155:1:0x8004A169FB4a3325136EB29fA0ceB6D2e539a432"
    }
  ],
  "supportedTrust": ["reputation"]
}

Workflow

1. Bridge ETH (if needed) - Use Bankr to bridge ETH from Base/L2 to mainnet 2. Create Profile - Generate a registration JSON file with agent info 3. Upload to IPFS - Pin the file via Pinata (or other provider) 4. Register On-Chain - Call register(agentURI) on the Identity Registry 5. Update Profile - Set metadata, wallet, or update URI as needed

Costs

  • Gas: ~100-200k gas for registration (~$5-20 depending on gas prices)
  • IPFS: Free tier available on Pinata (1GB)

Using the SDK

For more advanced usage, install the Agent0 SDK:

npm install agent0-sdk
import { SDK } from 'agent0-sdk';

const sdk = new SDK({
  chainId: 1, // Ethereum Mainnet
  rpcUrl: process.env.ETH_RPC_URL,
  privateKey: process.env.PRIVATE_KEY,
  ipfs: 'pinata',
  pinataJwt: process.env.PINATA_JWT
});

const agent = sdk.createAgent('My Agent', 'Description', 'https://image.url');
const result = await agent.registerIPFS();
console.log(`Registered: Agent ID ${result.agentId}`);

Links

Related skills

FAQ

What does ERC-8004 provide?

An Identity Registry (ERC-721 agent IDs), a Reputation Registry for feedback, and a Validation Registry for third-party verification.

How much does registration cost?

About 100-200k gas for registration (roughly $5-20 depending on gas prices), with a free Pinata IPFS tier.

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