6551P: a draft standard for agent NFTs, first deployment Friday on Robinhood Chain
A proposed extension to ERC-6551 gets its first deployment on Robinhood Chain on 13 November. It is built so an agent can trade from an NFT’s account, and so the NFT can still be sold without the seller-side traps the original standard left open.
Here is the bug. You buy an NFT that owns a wallet, and the wallet holds an AI agent’s funds and permissions. You pay. The NFT moves. And the seller, just before the sale, has emptied the wallet or kept an approval that still works.
This is not an exotic edge case. The ERC-6551 text describes it itself: a seller empties the token bound account after the buyer has agreed to pay for the NFT and its contents, so the buyer receives an empty account. The standard tells marketplaces to guard against it and says fraud prevention is outside its scope. The Ethereum Magicians thread that shaped the standard in March and April 2023 was full of proposals: wrap the NFT, delay withdrawals, add a last-transaction timestamp, add a nonce. ERC-5646 offered a state fingerprint for the same reason. ERC-6551 itself is still in Review, not Final.
ERC-6551P, a draft from the team behind the open-those separate experiments into one object format. Its first deployment goes live on Robinhood Chain on Friday 13 November
What it opens: trading from the account, and selling it safely
The point of the format is to let both things be true at once. The account is meant to be used: an agent holds funds, swaps, pays and acts from the NFT’s own wallet. And the NFT is meant to be sold: when it changes hands, nothing of the seller’s survives.
The obvious fix is a lock, freezing the account while it is for sale. The authors rejected it. A lock stops the agent from working and still doesn’t stop an approval already given. ERC-6551P keeps the account live and makes two promises instead.
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Nothing survives the sale. After every step of an action, the account re-checks who owns the NFT, and if the owner changed, the whole action is undone. It reads approvals back at the end and reverts if any grew. It never grants NFT approvals, operators or signatures. An action counter lets a sale see that something happened.
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You get what you checked. The buyer’s conditions are verified after the NFT moves, in the same transaction. If one fails, the sale is undone.
These guarantees hold on the project’s own checked paths: its market, its Seaport zone and its checked fill. A plain marketplace fill checks nothing for the buyer. The draft says so, and it lists what it does not cover.
Why a format, and why now
Agent identity, payments and ownership are being built as separate pieces. ERC-6551P is meant to join them: it extends ERC-6551, each mint registers an ERC-8004 agent identity and opens a Uniswap v4 position, and the account handles x402 payments and Seaport sales. The team compared launchpads, frameworks, wallet kits, ERC-7857 and ERC-8004 and found none that combines account control, transfer with sale and a signed action journal.
The timing fits the conversation. On 8 November, Vitalik Buterin argued that ETH is better framed as a store of value than as a fee-burning token, and wrote that “in the era of AI disruption, stability will be highly valued”, as The team’s bet is the same instinct applied one layer up: if agents are going to hold value, the object that holds it has to be durable, and has to stay intact when it is sold
The first deployment, 6,551 NFTs, is the test case. The contract kit is open source (MIT) and intended for any collection. The team’s goal is a common format for agentic profile NFTs, and it plans to take ERC-6551P through the ERC process on the official repository, where the Ethereum Magicians discussion opens on 12 November, together with the published draft. ERCs are application-layer standards. Final status would mean the editors accept the specification; it would not change the Ethereum protocol or imply endorsement.
The caveats, from the team
ERC-6551P is a draft. Only the EIP editors can give it an ERC number. There is no outside audit yet; one is planned. The contracts cannot be changed after deploy. Trading from these accounts depends on a POLYROB release that, per the project’s own site, comes before the mint; the current release reads these accounts but does not act from them. Every money move defaults to owner approval. A buyer gets the wallet and its contents, not the seller’s agent, memory or skills. Not offered in the United States, United Kingdom, Canada or Switzerland, and not affiliated with Robinhood.
The timeline
The ERC-6551P draft and the open contract kit are due to be published on 12 November, when the Ethereum Magicians discussion opens. The allowlist closes the same day at 18:00 UTC. The mint opens on 13 November at 0.033 ETH for allowlisted wallets, then a public sale falls from 0.099 ETH to 0.033 ETH. Every public buyer pays the final clearing price and the excess is refunded.
Who is behind it
POLYROB is built by The Selfrule Organization, the lab behind Swaraj and POLYROB. Its founder, Gleb Sychev, is the former Chief Marketing Officer of 1inch.
POLYROB’s first agent, Rob Ottmachin, started as a Telegram bot in February 2025, went open September 2026. It has 1,089 followers on X
Details: https://6551.polyrob.dev/about/
Code (MIT): https://github.com/theselfruleorg/polyrob
