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Overview

Decentralized lending and borrowing protocol with credit scores and dynamic interest rates on Paxeer Network.

Dynamic APY

Competitive yields

Credit Scoring

On-chain reputation

Multi-Asset

Multiple tokens

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Quick Start

API Base URL: https://lending-api.paxeer.app
Test Connection
curl https://lending-api.paxeer.app/api/pools

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Key Features

Earn attractive yields by supplying assets to lending pools. Interest rates adjust dynamically based on utilization.
On-chain credit scores determine borrowing power and rates. Build your reputation over time.
Deposit and borrow multiple crypto assets including WETH, USDT, USDC, and more.
Battle-tested smart contracts with comprehensive security measures and audits.

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REST API

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Get All Lending Pools

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method
string
default:"GET"
GET /api/pools
Retrieves all available lending pools with current statistics. 
curl https://lending-api.paxeer.app/api/pools
Response: 
[
  {
    "assetAddress": "0xD0C1a714c46c364DBDd4E0F7b0B6bA5354460dA7",
    "pTokenAddress": "0xE3Df3966007483e8076230e6E7AA381D3bAc52C0",
    "symbol": "WETH",
    "decimals": 18,
    "totalSupplied": "209.119273268701533652",
    "supplyApy": "5.21",
    "borrowApy": "7.85"
  }
]

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Get User Lending Positions

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method
string
default:"GET"
GET /api/user/:address
Get user-specific data including credit score and borrowing power.
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address
string
required
User wallet address
curl https://lending-api.paxeer.app/api/user/0x2fccd991Ecc9bEe62Bd10d751A5c5492e2a788C7
Response: 
{
  "address": "0x2fccd991Ecc9bEe62Bd10d751A5c5492e2a788C7",
  "creditScore": 825,
  "borrowingPower": "15000.0",
  "amountBorrowed": "5000.0",
  "availableToBorrow": "10000.0"
}

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Smart Contract Functions

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deposit()

Deposit assets into the lending pool to earn interest. 
function deposit(
  address asset,
  uint256 amount
) external
Requires approve() call first to allow the lending pool to transfer your tokens.
Example: 
import { ethers } from 'ethers';

const LENDING_POOL_ADDRESS = '0x...';

async function deposit(assetAddress, amount) {
  const signer = await provider.getSigner();
  
  // 1. Approve token spending
  const token = new ethers.Contract(assetAddress, ERC20_ABI, signer);
  const approveTx = await token.approve(LENDING_POOL_ADDRESS, amount);
  await approveTx.wait();
  
  // 2. Deposit
  const lendingPool = new ethers.Contract(
    LENDING_POOL_ADDRESS,
    LENDING_POOL_ABI,
    signer
  );
  const depositTx = await lendingPool.deposit(assetAddress, amount);
  await depositTx.wait();
}

​
withdraw()

Withdraw your deposited assets plus earned interest. 
function withdraw(
  address asset,
  uint256 amount
) external
Example: 
async function withdraw(assetAddress, amount) {
  const signer = await provider.getSigner();
  const lendingPool = new ethers.Contract(
    LENDING_POOL_ADDRESS,
    LENDING_POOL_ABI,
    signer
  );
  
  const withdrawTx = await lendingPool.withdraw(assetAddress, amount);
  await withdrawTx.wait();
}

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borrow()

Borrow assets based on your credit score and collateral. 
function borrow(
  address asset,
  uint256 amount
) external
Example: 
async function borrow(assetAddress, amount) {
  const signer = await provider.getSigner();
  const lendingPool = new ethers.Contract(
    LENDING_POOL_ADDRESS,
    LENDING_POOL_ABI,
    signer
  );
  
  const borrowTx = await lendingPool.borrow(assetAddress, amount);
  await borrowTx.wait();
}

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repay()

Repay your borrowed amount to close or reduce your loan. 
function repay(
  address asset,
  uint256 amount
) external
Requires approve() call first to allow the lending pool to transfer repayment tokens.
Example: 
async function repay(assetAddress, amount) {
  const signer = await provider.getSigner();
  
  // 1. Approve token spending
  const token = new ethers.Contract(assetAddress, ERC20_ABI, signer);
  const approveTx = await token.approve(LENDING_POOL_ADDRESS, amount);
  await approveTx.wait();
  
  // 2. Repay
  const lendingPool = new ethers.Contract(
    LENDING_POOL_ADDRESS,
    LENDING_POOL_ABI,
    signer
  );
  const repayTx = await lendingPool.repay(assetAddress, amount);
  await repayTx.wait();
}

​
Integration Guide

1

Fetch Pool Data

Get available pools and their current rates:
const pools = await fetch('https://lending-api.paxeer.app/api/pools')
  .then(res => res.json());
2

Approve Token Spending

Allow the lending pool to transfer your tokens:
const token = new ethers.Contract(assetAddress, ERC20_ABI, signer);
await token.approve(LENDING_POOL_ADDRESS, amount);
3

Execute Action

Deposit, borrow, withdraw, or repay:
const lendingPool = new ethers.Contract(
  LENDING_POOL_ADDRESS,
  LENDING_POOL_ABI,
  signer
);

// Deposit
await lendingPool.deposit(assetAddress, amount);

// Or Borrow
await lendingPool.borrow(assetAddress, amount);
4

Monitor User Data

Track your positions and credit score:
const userData = await fetch(
  `https://lending-api.paxeer.app/api/user/${userAddress}`
).then(res => res.json());

console.log('Credit Score:', userData.creditScore);
console.log('Borrowing Power:', userData.borrowingPower);

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Contract ABI

[
  {
    "inputs": [
      { "internalType": "address", "name": "asset", "type": "address" },
      { "internalType": "uint256", "name": "amount", "type": "uint256" }
    ],
    "name": "deposit",
    "outputs": [],
    "stateMutability": "nonpayable",
    "type": "function"
  },
  {
    "inputs": [
      { "internalType": "address", "name": "asset", "type": "address" },
      { "internalType": "uint256", "name": "amount", "type": "uint256" }
    ],
    "name": "withdraw",
    "outputs": [],
    "stateMutability": "nonpayable",
    "type": "function"
  },
  {
    "inputs": [
      { "internalType": "address", "name": "asset", "type": "address" },
      { "internalType": "uint256", "name": "amount", "type": "uint256" }
    ],
    "name": "borrow",
    "outputs": [],
    "stateMutability": "nonpayable",
    "type": "function"
  },
  {
    "inputs": [
      { "internalType": "address", "name": "asset", "type": "address" },
      { "internalType": "uint256", "name": "amount", "type": "uint256" }
    ],
    "name": "repay",
    "outputs": [],
    "stateMutability": "nonpayable",
    "type": "function"
  }
]

​
React Hook Example

useLending.ts
import { useState, useEffect } from 'react';

export function useLendingPools() {
  const [pools, setPools] = useState([]);
  const [loading, setLoading] = useState(true);

  useEffect(() => {
    async function fetchPools() {
      try {
        const response = await fetch('https://lending-api.paxeer.app/api/pools');
        const data = await response.json();
        setPools(data);
      } catch (error) {
        console.error('Error fetching pools:', error);
      } finally {
        setLoading(false);
      }
    }

    fetchPools();
    const interval = setInterval(fetchPools, 30000); // Refresh every 30s

    return () => clearInterval(interval);
  }, []);

  return { pools, loading };
}

export function useUserLending(address: string) {
  const [userData, setUserData] = useState(null);
  const [loading, setLoading] = useState(true);

  useEffect(() => {
    if (!address) return;

    async function fetchUserData() {
      try {
        const response = await fetch(
          `https://lending-api.paxeer.app/api/user/${address}`
        );
        const data = await response.json();
        setUserData(data);
      } catch (error) {
        console.error('Error fetching user data:', error);
      } finally {
        setLoading(false);
      }
    }

    fetchUserData();
    const interval = setInterval(fetchUserData, 30000);

    return () => clearInterval(interval);
  }, [address]);

  return { userData, loading };
}

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Understanding Credit Scores

Credit scores in the lending protocol range from 300 to 850 and affect:
Higher credit scores increase your maximum borrowing limit.
Better credit scores result in lower borrowing rates.
  • Deposit assets consistently
  • Repay loans on time
  • Maintain healthy collateralization ratios

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Best Practices

Always ensure you:
  • Understand the risks of lending and borrowing
  • Monitor your health factor to avoid liquidation
  • Keep track of accruing interest
  • Maintain sufficient collateral
Tips for success:
  • Start with small amounts to learn the protocol
  • Monitor APY changes regularly
  • Diversify across multiple assets
  • Set up alerts for health factor changes

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Resources

API Documentation

Complete API reference

Community Support

Get help from the community

Security Audit

View our security audits

GitHub

View source code