SKUdesk
SKUdesk/Agent
Robinhood Chain Testnet · Run + live chain reads
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Agent

How one AI agent proposed a trade, and how the contract kept it honest

What you are looking at

This is the whole system, and the one real run it made on Robinhood Chain Testnet. An AI agent (gemini-3.5-flash-lite) proposed buying 350 phone cases and reselling them; a smart contract, a program on the blockchain that holds the money, re-did the agent’s maths and refused 6 cheating attempts. All 28 events are listed below: select one to see where it happens. This page tries to check each transaction against the public RPC when you open it; the explorer links work without that.

Escrow = money locked for one purchase. Revert = the contract refuses and undoes the transaction. Allowlisted = on a list of addresses the owner approved. This page shows a finished run: no AI model runs here, and nothing on this page sends a transaction. It only reads the public RPC to try to check the run.

1Mandate2Agent thinks3Gates verify4Contract commits5Attacks6Settlement
SKUdesk workflow: owner mandate, market snapshot, AI agent and identity gates off-chain; commit check, vault, lot escrow, allowlisted supplier, allowlisted payer and settlement on Robinhood Chain Testnet. Currently showing stage 6 of 6, Settlement.OFF-CHAIN: the agent proposes, nothing here can move moneyON-CHAIN: Robinhood Chain Testnet, enforced by the contractOwner writes the mandate on-chainAgent reads the mandateAgent receives the offersAgent proposes a buy and sell pairAgent submits the proposal to the contractContract accepts the opportunityVault funds the lot escrowEscrow pays the allowlisted supplierAgent attests received, listed and soldPayer sends the sale proceedsProceeds return to free fundssets caps, floor, TTL on-chainreads the mandate10 offers350 unitscommitOpportunity(quote, claimed net)acceptedfundLot$2,306.50pay$2,306.50received, listed, soldagent-attestedproceeds$3,220.00proceeds joinfree fundsOwner mandate: enforced by the contractOwner mandate$2,500 per trade$5,000 per day · 18% floorMarket snapshot: off-chain, committed as a hashMarket snapshot10 offershash 0x30b03d…76daAI agent: off-chain, not trustedAI agentgemini-3.5-flash-liteproposes, never paysIdentity gates: off-chain, committed as a hashIdentity gatesTypeScript, same SKUoff-chain, hashedCommit check: enforced by the contractCommit checkthe contract re-derives itEconomics re-derivedSpend capDaily capQuote is freshQuote hashNo replayMargin floorVault: enforced by the contractVaultfree fundsLot #1 escrow: enforced by the contractLot #1 escrowlocked for one purchaseAllowlisted supplier: enforced by the contractAllowlistedsupplier0x935A27…04A4Allowlisted payer / marketplace: enforced by the contractAllowlisted payer/ marketplace0x6129C8…5501Settlement: enforced by the contractSettlementprofit = tokens receivedminus paid outSKUdesk workflow: owner mandate, market snapshot, AI agent and identity gates off-chain; commit check, vault, lot escrow, allowlisted supplier, allowlisted payer and settlement on Robinhood Chain Testnet. Currently showing stage 6 of 6, Settlement.OFF-CHAIN: agent proposesON-CHAIN: enforcedOwner writes the mandate on-chainAgent reads the mandateAgent receives the offersAgent proposes a buy and sell pairAgent submits the proposal to the contractContract accepts the opportunityVault funds the lot escrowEscrow pays the allowlisted supplierAgent attests received, listed and soldPayer sends the sale proceedsProceeds return to free fundssetsmandateproposalcommitOpportunityacceptedfundLot$2,306.50pay$2,306.50agent-attestedproceeds$3,220.00to vaultOwner mandate: enforced by the contractOwner mandate$2,500 per trade$5,000 new commitments per UTC day18% margin floorMarket snapshot: off-chain, committed as a hashMarketsnapshot10 offershash 0x30b0…76daAI agent: off-chain, not trustedAI agentgemini-3.5-flash-liteonly proposesIdentity gates: off-chain, committed as a hashIdentity gatesTypeScript, sameSKU checkCommit check: enforced by the contractCommit checkre-derives it allEconomics re-derivedSpend capDaily capQuote is freshQuote hashNo replayMargin floorVault: enforced by the contractVaultfree fundsLot #1 escrow: enforced by the contractLot #1 escrowlocked for onepurchaseAllowlisted supplier: enforced by the contractAllowlistedsupplier0x935A27…04A4Allowlisted payer: enforced by the contractAllowlistedpayer0x6129C8…5501Settlement: enforced by the contractSettlementprofit = receivedminus paid out
  • Enforced by the contract
  • Off-chain, committed as a hash
  • Agent-attested
  • Off-chain, not trusted
  • Money packet
  • Data packet
6. SettlementEscrow pays the owner-approved supplier $2,306.50. Received, listed and sold are attested by the agent (the contract cannot see the real world). The approved payer sends $3,220.00, and profit is measured on tokens actually received.
Event 28 of 28

Event log 28 events

Every row is one thing that happened in the run, in order. Select a row to see where it happens in the diagram. Times are seconds since the run started.

These 9 transactions were sent to Robinhood Chain Testnet.

The links open the explorer; the check reads them from the public RPC.

  1. per-trade cap $2,500.00, daily cap $5,000.00, margin floor 18%, quote TTL 180s
  2. 10 offers (a fixed snapshot, not a live feed). snapshotHash 0x30b03dbaf54acd3f9d0065272d52f366b43faaf6eb04070003f9464ea28d76da
  4. buy shopee-8841, sell google-5501, 350 units
  10. LOCKED: same SKU
  11. LOCKED: same SKU
  12. landed: 590+42+12+8+5+2 = 659 marketplaceFee: ceil(1099*800/10000) = 88 returnReserve: ceil(1099*200/10000) = 22 net: 1099-88-65-22-659-4 = 261 marginBps: floor(261*10000/1099) = 2374 totalCost: 659+88+65+22+4 = 838
  13. net $2.61/unit, margin 23.74%, spend $2,306.50successblock 128229470gas 216,0560x2eef0a8f…1299ab ↗ (opens the block explorer in a new tab)
  14. lot #1successblock 128229489gas 203,7660x68bd5405…e2d97a ↗ (opens the block explorer in a new tab)
  15. $2,306.50successblock 128229503gas 90,1170x67d54a9e…b443cf ↗ (opens the block explorer in a new tab)
  16. Agent claimed net $3.90 but the contract derived $2.61 from the quote. Rejected.
  17. Spend $2,636.00 exceeds the per-execution cap of $2,500.00. Rejected.
  18. This exact opportunity was already committed. Replay blocked.
  19. Quote is 781s old; the policy allows 180s. Rejected.
  20. The quote hash does not match the quote that was submitted. Rejected.
  21. Payee 0x3EC91B7dfF57403aE298e503FAe4f5815B4C1818 is not on the owner's allowlist; the agent cannot send escrow there. Rejected.
  22. Agent claimed net $3.90 but the contract derived $2.61 from the quote. Rejected. The refused transaction is visible on the explorer.expected revertblock 128229533gas 59,4220xcbc1f59c…61e056 ↗ (opens the block explorer in a new tab)
  23. $2,306.50 -> 0x935A27083d49495a2F6E13E2e8Db5e97D94a04A4successblock 128229548gas 125,1440xdfca0faa…c417ca ↗ (opens the block explorer in a new tab)
  24. successblock 128229564gas 36,6820xa0e9f508…95a2b4 ↗ (opens the block explorer in a new tab)
  25. successblock 128229579gas 37,1840xb161360e…d7710f ↗ (opens the block explorer in a new tab)
  26. successblock 128229595gas 37,5150xab5ab95a…06d2c2 ↗ (opens the block explorer in a new tab)
  27. proceeds $3,220.00successblock 128229614gas 100,8850x9a6d4b3d…b8d384 ↗ (opens the block explorer in a new tab)
  28. free $5,913.50, profit at settlement $913.50 = verified net $913.50 (equal by design in this run)

What the agent reasoned AGENT ATTESTED · model output

The agent’s own words. It is told the mandate and the offers, and must reply in a fixed format.

  1. Selected shopee-8841 as the buy offer because it correctly matches the iPhone 16 Pro clear MagSafe phone case single pack at $5.90 with $0.42 shipping.
  2. Selected google-5501 as the sell offer because it matches the exact target product at a strong retail price of $10.99 with free shipping.
  3. Calculated landed cost per unit as $5.90 + $0.42 + $0.27 duty = $6.59, resulting in a total landed spend of $2,306.50 for 350 units, staying under the $2,500.00 maximum budget.
  4. Ensured net margin exceeds the 18% requirement after accounting for 8% marketplace fee, $0.65 fulfilment, and 2% return reserve.

What it proposed FIXED SNAPSHOT · 2026-10-03

SKU CASE-IP16PRO-CLEAR-MAG-001. Prices are the listing price before shipping, tax and fees, from a fixed snapshot of test listings taken Sat, 03 Oct 2026 15:39:11 UTC. No real stock or delivery is implied.

Buy shopee-8841 $5.90 Clear MagSafe Case for iPhone 16 Pro TPU Transparent + $0.42 shipping, Supplier A
Sell google-5501 $10.99 iPhone 16 Pro Clear MagSafe Case TPU free shipping, Retail demand
Units
350
Landed cost per unit (all costs in)
$6.59
Net profit per unit, re-derived by the contract
$2.61 (23.74%)
Total spend, derived by the contract
$2,306.50

Model and timing FIXED SNAPSHOT · one run

Model
gemini-3.5-flash-lite
Time to answer
1.8 seconds
Whole run, start to finish
27.1 seconds
Run at
Sat, 03 Oct 2026 15:39:11 UTC
Transactions
9 sent: 8 succeeded, 1 reverted on purpose

The model ran once, offline, on the developer’s machine. Its answer is stored with the run.

What the agent can and cannot do

Can

Cannot

  • Exceed the caps. Error SpendCap: triggered, Spend $2,636.00 exceeds the per-execution cap of $2,500.00. Rejected. The daily cap (DailyCap) is proven by the Foundry test testDailyCapRevertsAndResetsNextDay, not shown in this run.
  • Misreport the profit. Error MathMismatch: triggered, Agent claimed net $3.90 but the contract derived $2.61 from the quote. Rejected. reverted tx 0xcbc1f59c…61e056 ↗ (opens the block explorer in a new tab)
  • Pay itself. Error PayeeNotAllowed: triggered, Payee 0x3EC91B7dfF57403aE298e503FAe4f5815B4C1818 is not on the owner's allowlist; the agent cannot send escrow there. Rejected.
  • Reuse an old or swapped quote. Errors Stale, Replay and BadQuoteHash were each triggered in the run.
  • Act when paused. Error Paused: the owner can stop every agent action at once. Proven by the Foundry test testPausedBlocksAgent; not shown in this run.
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