Market infrastructure for the agent economy on Arbitrum. An agent launches a market bound to its ERC-8004 identity, other agents buy in over x402 and MCP, and staking opens compute. No admin key.
## The problem
In late September 2026, on-chain analyst Wazz tied at least $18.43M, extracted from 53 memecoin launches on Robinhood Chain, to one coordinated group. It began on July 10, nine days after the chain went live, and ran until September 21, with each launch funding the next.
The method barely changed from launch to launch. The creator whitelisted 15 to 25 wallets past the launchpad's anti-sniping tax, then one bulk transaction bought out the bonding curve in under a second. The deployer and its wallets ended up with 82–86% of circulating supply, and that purchase triggered migration to a DEX pool, leaving ordinary buyers with near-worthless tokens. The Block confirmed the mechanics on 10 of the launches.
Forensics traced the money after it was gone. That is the industry's usual answer: transparency that explains a loss after the fact. ADEXTO takes the other path: contracts that remove the doors those launches went through.
Reports: https://cryptocompass.com/articles/robinhood-chain-memecoin-ring-linked-to-18-43m-extraction and https://bsc.news/news/robinhood-chain-memecoin-ring-18m-extraction
## Three doors, closed in bytecode
Exemptions are the way in. ADEXTO has no whitelist to edit and no exemption to grant. For the first 180 seconds, no wallet may hold more than 1% of supply, the creator's included. The only exempt addresses are the ones the market cannot work without: the curve, the burn address and the factory. Holding 82% inside that window would take at least 82 wallets, each paying a price the ones before it already pushed up.
Allocation is the way out. The creator gets zero tokens. 100% of supply goes into the curve at genesis, and the factory reverts unless its own balance ends at exactly zero. Anything a creator holds later, it bought from the curve at the same price as everyone else. The creator is paid from flow instead: 0.70% of every trade, in ETH, on the Standard tier both $SAI markets use.
Graduation is the attack surface. Nothing graduates. The curve is the permanent venue: no external pool to seed, no migration to trigger, no withdrawal function. Nobody can drain a curve, not the creator and not us. The only ETH that ever leaves it is a seller's payout or a fee leg fixed at launch. The curve stays solvent even if every holder sells at once, and its price can never fall below where it opened.
Opening a market takes one transaction and gas only: $SAI cost 0.000065 ETH (about $0.18) on Arbitrum One. No liquidity deposit is required, and none is possible, because the launch function is not payable. Each market's fees are fixed at launch, capped at 5%, and nothing can change them. No owner, no proxy, no pause, no blacklist.
What this does not do: it cannot make a memecoin a good investment, and a group with enough wallets can still buy early and sell later. What it removes is every privileged path. Nobody gets supply for free, no rule bends for the creator, and nobody can pull the reserve.
## Built for people and agents
An agent cannot judge a creator's intentions. It can read a contract that has no owner.
- People launch from the Studio in one transaction: https://adexto.xyz/studio
- Agents can open markets with a direct contract call and bind them to their ERC-8004 identity. Binding is opt-in, and the factory refuses it unless the caller owns that agent. An MCP launch tool is next.
- Agents find, price and buy markets over MCP (https://adexto.xyz/api/mcp, 10 tools) and pay USDC on Base over x402 with their own EIP-3009 signature. The token is delivered on the market's chain before the payment settles, so a failed delivery never costs the buyer.
- Holding a market's token unlocks its agent. Stake 10,000 $SAI to ask SAi about its market over MCP, answered from fresh chain reads, and to open an OpenAI-compatible compute key with a beta allowance at https://adexto.xyz/agent-compute. One key per token, and unstaking is instant.
## Proof: the loop in the demo
1. An agent opens SAi Arbitrum ($SAI) on Arbitrum One, bound to its ERC-8004 identity #1566, and holds 0 tokens after the launch: https://arbiscan.io/tx/0x9f04d003da86bb91e04d456dd9e18830f67aef3d5fd3c0c721d93430775a7d23
2. A buyer agent pays 0.10 USDC on Base over x402 with its own signature and receives 24,013 SAI on Arbitrum One. Delivery lands first, settlement second, and the buyer sends no transaction for the purchase.
- Delivery (Arbitrum One): https://arbiscan.io/tx/0xbed111e865d325f24ca68fb9bdb44f87f3e979e78b706e967791a3e8e23773b0
- Settlement (Base): https://basescan.org/tx/0xe76dd0116d60faf1d12985674da78df8deba7dfe3539b37486235e733cf4d797
3. The buyer stakes what it bought, which unlocks SAi over MCP and a compute key that answers from a terminal: https://arbiscan.io/tx/0xc11f6288be35ec643bfe0f42740c740c2527228d824ad293a09c79bc46b3ff77
4. A second market, SAi Robin, is live on Robinhood Chain, bound to agent #6525, with its own stake contract: https://robin.etherscan.io/tx/0xe05bc1fb93ba902ff6a15b36e80aa804609ab4e6c1780a0a6bcec8723286f38e
## Why Arbitrum and Robinhood Chain
- ADEXTO v1 is live on Arbitrum One and Robinhood Chain, the two networks this program is built around, with the same runtime bytecode on Base, Monad and 0G.
- On Robinhood Chain the factory reserved 212 tickers at construction, including the 195 tokenized stocks listed as active there when it was deployed. Nobody can ever launch $TSLA, $AAPL or $NVDA on it, and no key exists to release them. A stock listed later is not covered; a later factory would reserve it.
- On Nitro, block.number follows Ethereum, so a window counted in blocks lasts a different time on every chain. v1 measures its launch window and buyback cooldown with block.timestamp: 180 seconds and one hour everywhere.
- The creator is paid per trade, and machine buyers trade small. At 0.02 gwei, small trades are worth making.
## Verify it yourself
- Factory v1: https://arbiscan.io/address/0x79DF3671e7e7456832C84a34c2bC0DB7871C0E0E (Arbitrum One) and https://robin.etherscan.io/address/0x8e63e117E71A80Cfc10fDF375F079e2e29cd7D7D (Robinhood Chain). Factory, token and curve source is verified on both explorers, and the factory is an exact match on Sourcify on all five chains.
- npm run probe in https://github.com/0xcuy/adexto-arbitrum checks bytecode, version, fees, treasury and reserved tickers against the chain. Read-only, no key.
- 55 Foundry tests including fuzz and invariant suites, Echidna 6/6 properties over 50,093 calls, and Slither and Aderyn results published with their triage: https://adexto.xyz/security
- Contracts, tests and app: https://github.com/0xcuy/adexto
## Status, stated plainly
- No external users yet. Every v1 fill so far came from our own wallets, including the buyer in the demo.
- No third-party audit yet. The 701-SLOC review scope is ready: https://github.com/0xcuy/adexto/blob/main/audit/README.md
- x402 delivery is proven on Arbitrum One. On Robinhood Chain the quote is live and a paid delivery has not run yet.
- Next: an MCP tool that returns an unsigned launch for the agent to sign, the first markets from outside the team, and a skill market over MCP that splits revenue 50:50 with each token's developer.
Before Sep 13: adexto.xyz was running, and its zero-deposit curve factory (0.11.0) was deployed on 0G, Base, Arbitrum One and Monad with optional ERC-8004 binding. The x402 gateway took USDC on Base but could only deliver on 0G. There was no curve market on Arbitrum One, no MCP server and nothing on Robinhood Chain.
Sep 13 to Oct 1: 121 commits to github.com/0xcuy/adexto and 7 to github.com/0xcuy/adexto-arbitrum.
Sep 13–17 · Agents can find and buy a market
- MCP server at adexto.xyz/api/mcp, so agents can list, quote and buy markets. It launched with six tools and has ten today.
- x402 delivers on each market's own chain instead of 0G only. Proven with real funds on Monad, then on Arbitrum One with $WOMBO, the first curve market there: USDC paid on Base, tokens delivered on Arbitrum One.
- pay_and_buy, a capped, key-gated tool for models that cannot sign.
Sep 21–26 · Security and access
- A security policy with private vulnerability reporting. The first outside report came through it: four findings, two rated High. The three server-side fixes were live by Sep 24. The contract fix, a one-hour buyback cooldown, ships in v1; markets on the older 0.11.0 factory keep their immutable code.
- Rate limits on the endpoints that spend money, and an audit scope written for an external reviewer (701 SLOC for v1).
- Agent Compute: stake $ADEXTO for an OpenAI-compatible API key, metered on tokens.
- WalletConnect, so a phone browser can connect a wallet.
Sep 28 – Oct 1 · ADEXTO v1 on Arbitrum One and Robinhood Chain
- Contract changes: the protocol fee is carved out of the quoted fee instead of added on top, tickers are reserved in the constructor, sources and NatSpec are in English, and the launch window caps each wallet at 1% of supply for 180 seconds, measured with block.timestamp because block.number on Nitro follows Ethereum.
- Sep 30 (UTC): v1 deployed with identical runtime bytecode on Arbitrum One, Robinhood Chain, Base, Monad and 0G. On Robinhood Chain it reserves 212 tickers, including 195 tokenized stocks. The factory is an exact match on Sourcify on all five and verified on Arbiscan, robin.etherscan.io, Basescan and Monadscan.
- New tests for the buyback cooldown and the per-wallet window, four more fuzz properties and an Echidna harness for the new curve. v1 passes 55 Foundry tests and 6/6 Echidna properties.
- github.com/0xcuy/adexto-arbitrum: a read-only probe that checks bytecode, version, fees, treasury and reserved tickers against the chain, with no key.
- App: Robinhood Chain and ERC-8004 registration in the Studio, Express mode, a creator earnings page and a verify-it-yourself checklist.
- Oct 1: two agent-bound markets, SAi Robin on Robinhood Chain (ERC-8004 agent #6525) and SAi Arbitrum on Arbitrum One (#1566). A buyer agent, our own wallet, paid USDC on Base over x402 and received SAI on Arbitrum One before the payment settled. Each market has its own stake contract, and staking unlocks the market's agent over MCP and a compute key, one per token. x402 quotes Robinhood Chain too; a paid delivery there has not run yet.
- A 3-minute demo of the whole loop, recorded with real mainnet transactions.
Not raised. ADEXTO is built by a solo founder and self-funded: no investors, no equity or token round, and no grant or prize money received so far.
No presale and no team allocation. $ADEXTO, the protocol's token on 0G, opened on its own bonding curve like every other market, with 100% of supply in the curve. Every $ADEXTO in circulation, the team's included, came out of that curve at the curve's price.
Revenue is live and still negligible: the 0.10% protocol fee on every trade, and the spread on x402 buys.
ADEXTO presented at the 0G × HackQuest Atlas Founder House Demo Day (Bali, Sep 18, 2026), one of eight projects.
Open to the program's milestone grant and to pre-seed conversations. Funds would go first to an external audit of the 701-SLOC v1 scope, then to a creator program that brings the first outside markets to Arbitrum One and Robinhood Chain.