Turn Your MetaMask Debit into Credit The on-chain engine that converts every MetaMask debit card into a true revolving credit card—while merchants get paid in seconds.
The on-chain engine that turns every MetaMask debit card into a true revolving credit card—while merchants get paid in seconds.
Web page: https://davidsdvm.github.io/kori/
1 ▸ Why Kori needs to exist
Imagine Sara, a Bogotá freelancer who is paid in USDC and already spends it with the new MetaMask debit card. She can buy coffee anywhere Mastercard is accepted—**but she still can’t buy tomorrow’s laptop on credit**, and the online shop that sells it will wait up to 14–21 days before PayPal or Amazon finally release the cash.
At the same time, “Buy-Now-Pay-Later” limits keep shrinking—the average BNPL loan has slid from $760 in 2020 to $372 in 2025.
Consumers need credit; merchants need instant liquidity. Kori delivers both.
2 ▸ How Kori works — step-by-step
Flow | What Sara experiences | What happens behind the scenes |
|---|---|---|
Connect Wallet | Clicks “Sign in with MetaMask” | MetaMask SDK / Delegation Toolkit proves wallet ownership (hackathon bonus #1). |
Data Scan | Authorises read-only scan | Kori’s oracle ingests on-chain cash-flow, wallet age, stablecoin balances plus every swipe of the MetaMask debit card. |
Score | Sees her KoriScore: 185 | Smart-contract model grades 200+ variables and maps them into a 0-to-1,000 range. New users start small by design. |
Unlock Store Credit | Bronze tier: $100 line usable only at Kori partner stores | A liquidity pool pre-funds the merchant in instant USDC; Sara owes Kori, not the merchant. |
Repay & Rise | Pays weekly via any chain | Every on-time repayment mints an immutable “repayment attestation” NFT; her KoriScore climbs. |
Graduate to Card Credit | Reaches Platinum at 610 points—now sees an extra $500 open-loop limit on her MetaMask card | The riskiest channel (general-purpose card) is capped at ~⅓ of her closed-loop line to keep exposure controlled. |
3 ▸ The tier ladder
Tier | Score | Partner-store line* | Card line** | Why it’s safe |
|---|---|---|---|---|
Bronze | 0–200 | $50 – $100 | — | Below today’s typical BNPL ticket (≈$372) to minimise losses. |
Silver | 201–400 | Up to $300 | — | Still under the $200–$1,000 band most first cards begin at. |
Gold | 401–600 | $600 – $1,000 | — | Tops the “starter-card” spectrum yet stays merchant-locked. |
Platinum | 601–800 | $1,500 – $2,000 | $300 – $500 | Mirrors a secured card opened with a $49–$200 deposit. |
Diamond | 801–1,000 | $3,000 – $5,000 (or 1× net monthly income) | $1,000 – $2,000 | Keeps open-loop credit <40 % of total, limiting worst-case loss. |
Spendable only with Kori-integrated merchants *Virtual or physical MetaMask | Mastercard
4 ▸ Why merchants plug in—instantly
Pain with legacy rails | Kori upgrade |
|---|---|
Payouts held 7–14 days or more for new sellers | USDC lands the moment the sale clears—no reserves, no rolling holds. |
3–4 % card fees + chargebacks | 1 % Kori settlement fee, zero fraud chargebacks (Kori owns risk). |
Small BNPL tickets (<$400) | Basket sizes climb as users tap expanding Kori lines. |
5 ▸ Why users stay
* From debit to credit without leaving self-custody.
* Exportable reputation. Their repayment NFTs form a portable, privacy-preserving credit passport across Web3.
* Rewards that compound. 1 % USDC cash-back auto-stakes into a yield vault, growing future spending power.
6 ▸ Business engine
1. Instant-payout fee — 1 % of every merchant settlement.
2. Interchange share — \~0.6 % on card-rail spend.
3. Credit spread — Borrow at 5 % stablecoin, lend at 12 % APR.
4. Float yield — Idle USDC swept into T-bill–backed on-chain funds.
Tiered exposure keeps expected loss below the BNPL late-payment rate of 41 % reported in 2025 surveys.
7 ▸ Why we win this hackathon (and the market)
Core mandate: “Convert the MetaMask debit card into a credit card.” ✔
Track fit:
Track 2 (DeFi-Driven Card Utilities) — credit line and repayment vaults.
Track 3 (Identity & On-Chain Reputation) — score + NFT attestations.
Bonus tech already integrated: MetaMask SDK/DTK, Circle Wallets, LI.FI SDK.
> In a single sentence: Kori turns every MetaMask debit swipe into an opportunity to build credit, unlocks instant working capital for merchants, and proves that on-chain data can fund the real world—today.
Join us as we give Web3 its first truly instant, reputation-based credit network.
Everything was done during the Hackaton
No Fundraising by now.