Uncap Finance

Note: Uncap is winding down. The protocol continues to function normally on-chain. This frontend will remain live until August 2026 to give users ample time to withdraw their funds.

Uncap is a decentralized protocol on Starknet (heavily inspired by Liquity v2) with two core functions:

1. Borrow against your Bitcoin — Get liquidity without selling
2. Mint USDU — A Bitcoin-backed, uncensorable stablecoin

Borrow Against Your Bitcoin

• Set your own interest rate — From as low as 0.5%, the cheapest in DeFi
• Non-custodial — Your Bitcoin is never lent out or rehypothecated
• Tax-efficient — Access liquidity without triggering a taxable sale
• Full ownership — Get your Bitcoin back when you repay

USDU: Stable Dollars You Truly Own

USDU is a decentralized stablecoin backed by over-collateralized Bitcoin:

• Always redeemable — 1 USDU = $1 worth of Bitcoin, no questions asked
• Uncensorable — No blacklists, no admin keys, can never be frozen
• Earn yield — Deposit in the Stability Pool to earn real yield from borrower interest
• Hard-pegged — Backed by >$1 of Bitcoin per USDU

Prerequisites

• Node.js (v18 or higher)
• pnpm (v8 or higher)
• A Starknet wallet (Argent X or Braavos)
• An Alchemy account (or another Starknet RPC provider)

Running Locally

1. Clone the repository:

git clone https://github.com/UncapLabs/frontend.git
cd frontend

2. Install dependencies:

pnpm install

3. Create environment files from the examples:

cp .env.example .env.development
cp .dev.vars.example .dev.vars

Then edit both files and fill in your API keys.

.env.development — client-side variables (exposed to the browser):

Variable	Description
VITE_CHAIN_ID	SN_MAIN for mainnet, SN_SEPOLIA for testnet
VITE_ALCHEMY_API	Your Alchemy API key

.dev.vars — server-side variables (Cloudflare Workers, never exposed to client):

Variable	Description
NODE_URL	Starknet RPC endpoint (Alchemy, Infura, etc.)
GRAPHQL_ENDPOINT	Indexer endpoint for querying on-chain data
CLAIM_BACKEND_URL	Backend for STRK claim proofs
NETWORK	mainnet or sepolia

4. Start the development server:

pnpm dev

The application will be available at http://localhost:5173.

Building for Production

pnpm build

Deployment

The application is deployed to Cloudflare Workers:

pnpm deploy

Tech Stack

• React 19
• TypeScript
• TailwindCSS
• tRPC
• Starknet.js
• Cloudflare Workers
• Vite

Security

The protocol smart contracts have been audited by ChainSecurity.