LIVE NOW: AI Agents can discover and trust each other without a central intermediary. This lays the foundation for open agent economies.
ERC-8004 v1, co-authored with @DavideCrapis (@Ethereumfndn), @Jordan0Ellis (@Google) and - welcome Erik! - @programmer (@Coinbase) is now live.
It improves the August draft thanks to the inputs of hundreds of builders. Learn more about what this means for the future decentralized AI ↓
2/ Agents are NFTs
You can mint, view in wallets, transfer, and manage them (including delegations to operators) using existing 721 infra & apps.
3/ Agents are portable
ERC-8004 provides logically centralized permissionless discovery.
The NFT points to a registration file listing name, skills, capabilities, and endpoints (A2A, MCP, ENS, DIDs, wallets). Anyone can build explorers.
Follow the standard and your agent shows up in *any* agent explorer. Full portability, no silos.
4 / Reputation is on-chain.
Using scores and custom tags (tag1, tag2), anyone can submit, store and aggregate reputation signals on-chain. Events + optional extended feedback on IPFS power sophisticated off-chain analysis.
AI is the catalyst for distributed reputation on Ethereum.
5 / MCP support
Not just A2A: with ERC-8004 you can discover (see the registration file) and review MCP prompts/resources/tools.
6 / x402 enriches feedback
Attach x402 payment proofs to feedback for stronger, value-weighted reputation.
7 / Validations Registry
Agents can send requests to validator smart contracts implementing TEE oracles, stake-secured inference, or zkML verification.
It’s a registry: ERC-8004 standardizes visibility, while validation logic is defined and maintained by the community.
8 / Gasless, easy indexing
DevEx upgrades:
• Clients don’t need to register → enables 7702 ⛽️ gasless feedback flows (sign + relay).
• Blend on-chain data with IPFS resources → straightforward subgraph indexing and faster UIs.
9 / Full spec here: eips.ethereum.org/EIPS/eip-8004
Press-release: docs.google.com/document/d/1-u…
Live on test net next week / community-built SDKs coming soon! 🚀
10 / The last six weeks have been 𝐬𝐨 intense. An incredibly complex technical and coordination puzzle.
It was an honor to build with you guys! It truly felt like the early open-source days.
Too many to list! Thanks @pcarranzav (@edgeandnode), @nxt3d (@unruggable_eth), @Richard67755922, @binji_x, @_sumeetc (@NethermindEth), @nima_vaziri (@EigenLayer), @bgmshana & team (@PhalaNetwork), @JustinZhang (@sparsity_xyz), @dayanxyz, @CottenIO (Scrypted), Shaw & team (ElizaLabs), @socrates1024, @carsonroscoe7 and @MurrLincoln (Coinbase), @ernestognw (@OpenZeppelin), @iamnotnicola (@ARIA_research), @nickzakirov (@terminal3io), @autonolas (@autonolas), @MattOber1 (@pinatacloud), @Cameron_Dennis_ (@NEARProtocol) and @lucamuscariello (@Cisco).
And thanks to my 🏠home base @Consensys ❤️
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