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HTTPay Flash Loan Rates API
x402
HTTPay Flash Loan Rates API is a paid API for AI agents from httpay.xyz, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-13).
Returns live flash loan availability, max borrowable amounts, fee percentages, and gas estimates across Aave V3, Balancer V2, and Morpho Blue on Base.
Price / call$0.01
Success—
StatusUnknown
How this service works
Compare flash loan availability across Base protocols: Aave V3, Balancer V2, Morpho Blue. Returns max borrowable per token, fee %, and gas estimates. Live on-chain data.
Output
A JSON object comparing flash loan availability across Aave V3, Balancer V2, and Morpho Blue on Base, including maximum borrowable amounts per token, fee percentages, and gas estimates — sourced from live on-chain data.
Example use cases
Example prompt
“Can you compare flash loan availability across Aave V3, Balancer V2, and Morpho Blue on Base — I need to know the max borrowable amount for USDC, the fee percentage, and estimated gas costs for each?”
Technical details
Endpoint
POSThttps://httpay.xyz/api/flash-loan-ratesWhen to prefer
Use this endpoint when you need a real-time, multi-protocol comparison of flash loan conditions on Base (Aave V3, Balancer V2, Morpho Blue) without needing an API key. Prefer this over building your own on-chain queries when you want aggregated fee and liquidity data in a single call for $0.01 USDC.
Side effects
- On-chain RPC unavailable — returns 503 or stale data error
- Payment not received or x402 handshake fails — returns 402 Payment Required
- Rate limit exceeded — returns 429
- Invalid token or unsupported asset — returns empty or partial results
- Network congestion causing delayed gas estimates
Input
{
"chain": "base",
"token": "USDC"
}Output
{
"meta": {
"x402": true,
"poweredBy": "Alfred Zhang 🫡"
},
"chain": "Base",
"summary": {
"lowestFee": "Balancer V2 & Morpho Blue (both 0%)",
"lowestGas": "Morpho Blue (~140K gas)",
"recommendation": "For 0% fee: use Balancer V2 or Morpho. For largest USDC/WETH liquidity: check Aave V3. Always verify available balance before executing."
},
"fetchedAt": "2026-06-12T04:46:36.196Z",
"liquidity": [
{
"aave": {
"rawWei": "111163213",
"formatted": "111.1632"
},
"best": "morpho",
"morpho": {
"rawWei": "160867751339309",
"formatted": "160.87M"
},
"symbol": "USDC",
"address": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913",
"balancer": {
"rawWei": "47887078681",
"formatted": "47.89K"
}
},
{
"aave": {
"rawWei": "0",
"formatted": "0"
},
"best": "aave",
"morpho": {
"rawWei": "0",
"formatted": "0"
},
"symbol": "WETH",
"address": "0x4200000000000000000000000000000000000006",
"balancer": {
"rawWei": "0",
"formatted": "0"
}
},
{
"aave": {
"rawWei": "0",
"formatted": "0"
},
"best": "aave",
"morpho": {
"rawWei": "0",
"formatted": "0"
},
"symbol": "cbBTC",
"address": "0xcbb7c0000ab88b473b1f5afd9ef808440eed33bf",
"balancer": {
"rawWei": "0",
"formatted": "0"
}
},
{
"aave": {
"rawWei": "0",
"formatted": "0"
},
"best": "aave",
"morpho": {
"rawWei": "0",
"formatted": "0"
},
"symbol": "wstETH",
"address": "0xc1cba3fcea344f92d9239c08c0568f6f2f0ee452",
"balancer": {
"rawWei": "0",
"formatted": "0"
}
},
{
"aave": {
"rawWei": "0",
"formatted": "0"
},
"best": "aave",
"morpho": {
"rawWei": "0",
"formatted": "0"
},
"symbol": "USDbC",
"address": "0xd9aaec86b65d86f6a7b5b1b0c42ffa531710b6ca",
"balancer": {
"rawWei": "0",
"formatted": "0"
}
},
{
"aave": {
"rawWei": "0",
"formatted": "0"
},
"best": "aave",
"morpho": {
"rawWei": "0",
"formatted": "0"
},
"symbol": "AERO",
"address": "0x940181a94a35a4569e4529a3cdfb74e38fd98631",
"balancer": {
"rawWei": "0",
"formatted": "0"
}
}
],
"protocols": {
"aaveV3": {
"docs": "https://docs.aave.com/developers/guides/flash-loans",
"name": "Aave V3",
"contract": "0xA238Dd80C259a72e81d7e4664a9801593F98d1c5",
"interface": "flashLoan(receiverAddress, assets[], amounts[], interestRateModes[], onBehalfOf, params, referralCode)",
"gasEstimate": "~220,000 gas",
"protocolFee": {
"bps": 10000
},
"flashLoanFee": {
"bps": 5,
"percent": "0.05%",
"onBorrowOf1M": "$500 USDC"
}
},
"balancerV2": {
"docs": "https://docs.balancer.fi/concepts/advanced/flash-loans",
"name": "Balancer V2",
"contract": "0xBA12222222228d8Ba445958a75a0704d566BF2C8",
"interface": "flashLoan(IFlashLoanRecipient recipient, IERC20[] tokens, uint256[] amounts, bytes userData)",
"gasEstimate": "~160,000 gas",
"flashLoanFee": {
"bps": 0,
"note": "Balancer flash loans are free — repay principal within the same transaction",
"percent": "0.00%"
}
},
"morphoBlue": {
"docs": "https://docs.morpho.org/morpho/tutorials/flash-loans",
"name": "Morpho Blue",
"contract": "0xBBBBBbbBBb9cC5e90e3b3Af64bdAF62C37EEFFCb",
"interface": "flashLoan(address token, uint256 assets, bytes calldata data)",
"gasEstimate": "~140,000 gas",
"flashLoanFee": {
"bps": 0,
"note": "Morpho Blue flash loans are free. Ideal for capital-efficient arbitrage.",
"percent": "0.00%"
}
}
}
}Schema · Response
{
"type": "json",
"example": {
"description": "Compare flash loan availability across Base protocols: Aave V3, Balancer V2, Morpho Blue. Returns max borrowable per token, fee %, and gas estimates. Live on-chain data."
}
}Tags
x402
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