Kudi Arc

Every scenario DeepQA drove in the browser, in plan order, with the 36 screenshots it captured along the way. A passing scenario is evidence too.

1. S1

   Execute USDC to EURC swap

   4 steps, 4 screenshots

   high✕ fail

   

   

   

   

   • Entered 1 USDC to swap for EURC, calculated receive amount is 0.8667 EURC.
   • Clicked swap button, transaction proceeded to Step 1 of 2: Approving token [redacted]
   • Swap transaction failed with an error: "missing revert data (action=\"estimateGas\")", and balances did not update.
   • Navigated to root page https://kudiarc.xyz/ with connected wallet 0x6496...55E7 and initial balance of 5.00 USDC.
   • Entered 1 into the 'You Pay' amount input field, which correctly updated the estimated EURC receive amount to 0.8667 EURC and enabled the swap button.
   • Clicked 'Swap 1 USDC → EURC'.
   • Application entered 'Step 1 of 2: Approving…' and then threw an estimateGas revert error ('missing revert data (action="estimateGas", data=null, reason=null, transaction=...').
   • The swap transaction did not complete, no success message was displayed, and balances remained unchanged.
2. S2

   Complete Send Remittance flow

   6 steps, 2 screenshots

   high✓ pass

   

   

   • Navigated to the Send Money page at /send.
   • Filled the remittance details with 1 USDC, destination country Nigeria, delivery method Bank Transfer, bank code 044, account number, and account name.
   • Navigated to the Send page at /send with connected wallet.
   • Selected Destination Country (Nigeria) and Delivery Method (Bank Transfer).
   • Entered 1 USDC as Send Amount.
   • Selected Recipient Bank (Access Bank), entered Account Number (0123456789), and Account Name (John Doe).
   • Clicked Review Transfer button, which opened the Confirm Transfer review modal with the transaction details (You send: 1 USDC, Recipient gets: ₦1,324 NGN, Destination Country: Nigeria, Exchange Rate, Fee, Recipient Name, and Bank).
3. S3

   Deposit USDC into Yield

   4 steps, 4 screenshots

   high✓ pass

   

   

   

   

   • Navigated to Yield page showing 4.86% APY, user USDC balance of 5.00 USDC, and initial USYC position of 0.00 USYC.
   • Entered 1 USDC to deposit, which shows an estimated return of 0.8793 USYC and enables the Deposit button.
   • Clicked deposit button; status changed to 'Step 1/2: Approving USDC...'.
   • Approval completed; transaction moved to 'Step 2/2: Depositing...'.
   • Navigated to https://kudiarc.xyz/yield with connected wallet showing 5.00 USDC balance and 0.0000 USYC yield position.
   • Entered 1 USDC into the deposit amount input field.
   • Submitted the deposit transaction and observed approval followed by deposit confirmation.
   • A confirmation notification '✅ Deposited! TX: 0x81da0c3b...' was displayed.
   • The user's Yield Position increased from 0.0000 USYC to 0.8792 USYC (≈ $1.00 USDC) and USDC balance updated accordingly.
4. S4

   Withdraw USYC to USDC

   4 steps, 4 screenshots

   high✓ pass

   

   

   

   

   • Navigated to /yield page showing USYC yield position and deposit/withdraw controls.
   • Switched to the Withdraw tab showing USYC balance of 0.8792 USYC.
   • Entered 0.1 USYC into withdraw amount field, displaying preview: burning 0.1 USYC to receive 0.1137 USDC.
   • Navigated to https://kudiarc.xyz/yield and switched to the Withdraw tab.
   • Entered 0.1 USYC into the withdrawal amount input, which updated the redemption preview (burn 0.1 USYC for 0.1137 USDC).
   • Clicked the Withdraw button and approved the transaction.
   • The transaction confirmed on Arc testnet, displaying the success message '✅ Withdrawn! TX: 0x090cf645...'.
   • The user's USYC position accurately decreased from 0.8792 USYC to 0.7792 USYC.
5. S5

   MAX button reserves USDC for gas

   2 steps, 2 screenshots

   medium✓ pass

   

   

   • Initial state loaded showing balance of 4.10 USDC.
   • Clicking MAX populated the You Pay input with 4.096303 USDC out of the 4.10 USDC balance, reserving gas.
   • The MAX button on the Swap page correctly populated the You Pay amount input with 4.096303 USDC when the balance was 4.10 USDC, reserving a portion of native USDC for gas fees.
6. S6

   Insufficient balance validation on Swap

   2 steps, 3 screenshots

   medium✓ pass

   

   

   

   • Entered 100 in the You Pay field when wallet balance is 4.10 USDC, and the action button became disabled showing 'Insufficient USDC balance'.
   • Navigated to the FX Swap page (/) with a connected wallet holding 4.10 USDC and 0.00 EURC.
   • Entered an amount of 100 in the 'You Pay' USDC input field, which exceeds the wallet's 4.10 USDC balance.
   • Observed the Swap action button immediately updated to a disabled state with the label 'Insufficient USDC balance'.
   • Tested boundary condition by entering 4.11 USDC (0.01 above balance), which also properly disabled the swap button displaying 'Insufficient USDC balance'.
   • Flipped tokens to EURC -> USDC and entered 1 EURC with a 0.00 EURC balance, confirming the button was disabled with 'Insufficient EURC balance'.
7. S7

   Send Remittance required fields validation

   4 steps, 2 screenshots

   medium✓ pass

   

   

   • Navigated to /send page showing send form with amount, recipient country selection, delivery method, bank, account number, and account name.
   • With country selected and amount set to 1.00 USDC, leaving Account Number and Account Name blank keeps the button disabled with the text 'Enter recipient details'.
   • Navigated to https://kudiarc.xyz/send.
   • Selected Nigeria as Destination Country and entered 1.00 USDC as the send amount.
   • Observed that when Account Number and Account Name are blank, the submit button is disabled with the label 'Enter recipient details', preventing incomplete remittance submission.
   • Verified that filling only Account Number or only Account Name also keeps the button disabled.
   • Verified that the 'Review Transfer' button is enabled only when all required recipient details (Bank, Account Number, Account Name) are provided.
8. S8

   Yield estimates display on deposit input

   3 steps, 2 screenshots

   medium✓ pass

   

   

   • Navigated to Yield page and observed deposit form already present.
   • Entered 100 USDC into deposit field and verified dynamic display of 87.9261 USYC received and +$4.86 / year estimated earnings.
   • Navigated to https://kudiarc.xyz/yield.
   • Observed the deposit section on the Yield page.
   • Entered '100' into the deposit input field.
   • Verified that the UI dynamically calculated and displayed estimated returns: 'You receive: 87.9261 USYC' and 'Est. yearly earnings: +$4.86 / year' alongside NGN value and APY.
9. S9

   Slippage tolerance selection

   2 steps, 4 screenshots

   medium✓ pass

   

   

   

   

   • Navigated to root page and entered 1.00 USDC into the FX Swap input.
   • Clicked through 1%, 2%, and 0.5% slippage tolerance buttons and verified active selection changes smoothly.
   • Slippage tolerance buttons for 0.5%, 1%, and 2% correctly respond to user clicks and update the selected slippage setting.
10. S10

    Send Remittance Delivery Method toggling

    3 steps, 4 screenshots

    low✓ pass

    

    

    

    

    • Navigated to Send page with initial state showing country selector and delivery method options.
    • Selected destination country; Bank delivery method is active showing bank account options in the dropdown.
    • Toggled delivery method to Mobile Money; form fields dynamically changed from Bank Account/Bank Select fields to Recipient Name and Phone Number fields.
    • Toggled back to Bank delivery method and verified bank select options and account inputs restored properly.
    • Navigated to https://kudiarc.xyz/send.
    • Selected destination countries and verified delivery method toggling between 'Bank' and 'Mobile Money'.
    • Toggling delivery method adapts the recipient details form appropriately, transitioning between Bank Account fields (combobox with bank/provider codes and account number input) and Mobile Money fields (recipient name and phone number input) without breaking the form.
11. S11

    Flip tokens on Swap interface

    2 steps, 3 screenshots

    low✓ pass

    

    

    

    • Initial state shows You Pay with USDC (Balance: 4.10 USDC) and You Receive with EURC.
    • Clicked Flip tokens button; You Pay token [redacted] to EURC with Balance: 0.00 EURC.
    • Flipping tokens again correctly restores USDC as You Pay with Balance: 4.10 USDC.
    • Successfully flipped tokens between USDC and EURC on the Swap interface, reversing pay/receive positions and updating balance accordingly.
12. S12

    Zero amount validation in Send Remittance

    4 steps, 2 screenshots

    low✓ pass

    

    

    • Navigated to https://kudiarc.xyz/send.
    • Selected recipient country (Nigeria), delivery method (Bank), bank code ('044'), account number ('0123456789'), and account name ('Jane Doe').
    • Verified that entering a valid amount (1 USDC) activates the 'Review Transfer → ₦1,324 NGN' button.
    • Entered '0' into the 'Send Amount (USDC)' input field.
    • Observed that when amount is '0', the action button remains disabled with label 'Enter recipient details', preventing submission and blocking the review modal from opening.

Findings that survived the Critic's audit. Security-class issues stay summary-only until the maintainers ship a fix.

criticalconfirmed ✓functionalF1 · S1

USDC to EURC swap fails during token approval/gas estimation

I entered '1' into the 'You Pay' amount input field and clicked 'Swap 1 USDC → EURC'. The UI displayed 'Checking rate...' and 'Step 1 of 2: Approving...', and then showed an error toast reading 'missing revert data (action="estimateGas", data=null, reason=null, transaction={'. No swap occurred and the balance remained unchanged.

Expected

The swap transaction should approve the token allowance, execute the swap, display a success message, and update the token balances.

Actual

The transaction fails with error 'missing revert data (action="estimateGas", data=null, reason=null, transaction={...})', no swap occurs, and balances do not update.

Repro · 4 steps

1. Navigate to https://kudiarc.xyz/
2. Ensure wallet is connected to Arc Testnet with USDC balance
3. Enter '1' in the 'You Pay' amount input field
4. Click the 'Swap 1 USDC → EURC' button

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