ERC-8004

Smart Contract Standard

Trustless agent standard defining on-chain registries for AI agent identity (ERC-721-based), reputation scoring, and multi-stage validation, enabling autonomous agents to establish verifiable trust on Ethereum.

Open Standard

Links

Visit Community

Details

License

https://github.com/ethereum/EIPs/blob/master/EIPS/eip-8004.md

Dev Status 📝 Draft

Dev Status Detail

Draft

Owner

Ethereum Community (EIP process); led by authors from MetaMask, Ethereum Foundation, Google, Coinbase

Country

Global / Decentralized

Start Year 2024

Stack

Solidity / EVM; three singleton registry contracts (Identity, Reputation, Validation)

Funding

Authors affiliated with MetaMask/Consensys, Ethereum Foundation, Google, Coinbase; no independent grant

Last Investigated Mar 9, 2026

Use Case Domains

Identity & Trust

Events & Coordination

Affordances

Sovereign identity

Interoperable formats

Smart Contract Standard Attributes

Origins

Authored by Marco De Rossi (MetaMask), Davide Crapis (Ethereum Foundation), Jordan Ellis (Google), and Erik Reppel (Coinbase); emerged from the need to give autonomous AI agents verifiable on-chain identity and trust credentials as agentic AI systems proliferate.

Data Formats

ABI-encoded registry interactions; JSON for agent identity metadata (ERC-721 tokenURI schema); structured feedback payloads for reputation updates

Terms

CC0

Funds

Unknown; developed as part of institutional R&D by author organizations

Based On

ERC-721 (identity registry uses NFT standard for agent identity tokens); ERC-4337 (compatible with account-abstracted agent wallets)

Permissions

Permissionless agent registration; tiered trust model where validation level scales with value at risk

Development Tools

Ethereum development tooling (Hardhat, Foundry); no dedicated SDK yet as of draft status

Protocol Maturity / Standardization

Draft EIP; under community review; mainnet deployment of registry contracts anticipated but not confirmed as of early 2026

Trust Framework

Three-layer trust: Identity registry (ERC-721 NFT-based); Reputation registry (score accumulation from task feedback); Validation registry (multi-stage verification scaling with stake)

Target Application Domain

AI agent infrastructure, autonomous agent coordination, multi-agent systems, agentic DeFi, AI-powered DAO tooling

Deployment Model

Three singleton registry contracts on Ethereum mainnet; agents instantiate identity tokens from the Identity registry

Standard Type

Agent / Coordination Standard

Ecosystem

Ethereum