Sky Lending Vaults

Overview

Returns Sky Protocol lending vaults (such as Savings USDS, Staked USDS, and Savings Dai) with supply, borrow, TVL, APY, and capacity metrics on Ethereum. Results can be filtered by vault or underlying token address and sorted by any supported column.

Business Value

• Yield Discovery: Quickly compare supply APYs across Sky vaults (e.g. sUSDS, stUSDS, sDAI) to identify the best savings/yield opportunities.
• Liquidity Monitoring: Track available liquidity, supply caps, and remaining capacity to assess deposit headroom before allocating capital.
• Risk Assessment: Surface utilization rate, LTV, and fee parameters to evaluate the risk/return profile of each vault.
• Portfolio Tracking: Monitor TVL and supply balances over time for positions held in Sky lending vaults.
• Protocol Analytics: Aggregate Sky Protocol lending data for dashboards, alerts, and cross-protocol comparisons.

Endpoint Details

URL:

https://api.cambrian.org/evm/lending/sky/vaults

Method: GET
Authentication: Required via X-API-Key header

Query Parameters

Response Field Descriptions

Examples

1. List Sky Lending Vaults

Retrieve Sky Protocol lending vaults with a limit of 10 results.

curl -X GET "https://api.cambrian.org/evm/lending/sky/vaults?limit=10" \
  -H "X-API-Key: YOUR_API_KEY" \
  -H "Content-Type: application/json"

Response:

[
  {
    "columns": [
      {
        "name": "chainId",
        "type": "UInt8"
      },
      {
        "name": "protocolId",
        "type": "String"
      },
      {
        "name": "vaultAddress",
        "type": "FixedString(42)"
      },
      {
        "name": "symbol",
        "type": "String"
      },
      {
        "name": "vaultName",
        "type": "String"
      },
      {
        "name": "underlyingAddress",
        "type": "String"
      },
      {
        "name": "underlyingSymbol",
        "type": "String"
      },
      {
        "name": "supply",
        "type": "Float64"
      },
      {
        "name": "supplyUsd",
        "type": "Float64"
      },
      {
        "name": "borrow",
        "type": "Nullable(Float64)"
      },
      {
        "name": "borrowUsd",
        "type": "Nullable(Float64)"
      },
      {
        "name": "tvlUsd",
        "type": "Float64"
      },
      {
        "name": "availableLiquidityUsd",
        "type": "Float64"
      },
      {
        "name": "supplyCap",
        "type": "Nullable(Float64)"
      },
      {
        "name": "supplyCapUsd",
        "type": "Nullable(Float64)"
      },
      {
        "name": "borrowCap",
        "type": "Nullable(Float64)"
      },
      {
        "name": "borrowCapUsd",
        "type": "Nullable(Float64)"
      },
      {
        "name": "remainingCapacityUsd",
        "type": "Nullable(Float64)"
      },
      {
        "name": "supplyApy",
        "type": "Nullable(Float64)"
      },
      {
        "name": "borrowApy",
        "type": "Nullable(Float64)"
      },
      {
        "name": "netSupplyApy",
        "type": "Nullable(Float64)"
      },
      {
        "name": "performanceFee",
        "type": "Nullable(Float64)"
      },
      {
        "name": "managementFee",
        "type": "Nullable(Float64)"
      },
      {
        "name": "utilizationRate",
        "type": "Nullable(Float64)"
      },
      {
        "name": "ltv",
        "type": "Nullable(Float64)"
      },
      {
        "name": "borrowable",
        "type": "Bool"
      },
      {
        "name": "depositEnabled",
        "type": "Bool"
      },
      {
        "name": "updatedAt",
        "type": "DateTime('UTC')"
      }
    ],
    "data": [
      [
        1,
        "sky-lending",
        "0xa3931d71877c0e7a3148cb7eb4463524fec27fbd",
        "sUSDS",
        "Savings USDS",
        "0xdc035d45d973e3ec169d2276ddab16f1e407384f",
        "USDS",
        4697087387.534656,
        4697087387.534656,
        null,
        null,
        4697087387.534656,
        4697087387.534656,
        null,
        null,
        null,
        null,
        null,
        0.03522379193427483,
        null,
        0.03522379193427483,
        null,
        null,
        null,
        null,
        false,
        true,
        "2026-09-03T14:27:35+00:00"
      ],
      [
        1,
        "sky-lending",
        "0x99cd4ec3f88a45940936f469e4bb72a2a701eeb9",
        "stUSDS",
        "Staked USDS",
        "0xdc035d45d973e3ec169d2276ddab16f1e407384f",
        "USDS",
        205839979.23579434,
        205839979.23579434,
        null,
        null,
        205839979.23579434,
        205839979.23579434,
        214000000,
        214000000,
        null,
        null,
        8160020.764205664,
        0.05383669195428764,
        null,
        0.05383669195428764,
        null,
        null,
        null,
        null,
        false,
        true,
        "2026-09-03T12:11:11+00:00"
      ],
      [
        1,
        "sky-lending",
        "0x83f20f44975d03b1b09e64809b757c47f942beea",
        "sDAI",
        "Savings Dai",
        "0x6b175474e89094c44da98b954eedeac495271d0f",
        "DAI",
        166563348.4334195,
        166563348.4334195,
        null,
        null,
        166563348.4334195,
        166563348.4334195,
        null,
        null,
        null,
        null,
        null,
        0.012508357850979479,
        null,
        0.012508357850979479,
        null,
        null,
        null,
        null,
        false,
        true,
        "2026-09-03T14:00:00+00:00"
      ]
    ],
    "rows": 3
  }
]

Result collections are limited to 10 items. This response returns 3 Sky vaults (sUSDS, stUSDS, sDAI) on Ethereum, each with supply, TVL, and APY metrics; stUSDS also has a defined supply cap, with remaining capacity of ~$8.16M.

x402 Payment Option

This endpoint supports pay-per-use access via the x402 payment protocol (v2): pay $0.05 USDC per request using blockchain micropayments. No API key required.

Quick Start (TypeScript)

npm install @x402/fetch @x402/evm viem

import { x402Client } from "@x402/core/client";
import { ExactEvmScheme } from "@x402/evm/exact/client";
import { wrapFetchWithPayment } from "@x402/fetch";
import { privateKeyToAccount } from "viem/accounts";

const signer = privateKeyToAccount(process.env.EVM_PRIVATE_KEY as `0x${string}`);
const client = new x402Client();
client.register("eip155:*", new ExactEvmScheme(signer));

const fetchWithPayment = wrapFetchWithPayment(fetch, client);
const response = await fetchWithPayment(
  "https://x402.cambrian.org/evm/lending/sky/vaults"
);
const data = await response.json();

Quick Start (Python)

pip install "x402[httpx]"

import asyncio, os
from eth_account import Account
from x402 import x402Client
from x402.http.clients import x402HttpxClient
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client

async def main():
    client = x402Client()
    account = Account.from_key(os.getenv("EVM_PRIVATE_KEY"))
    register_exact_evm_client(client, EthAccountSigner(account))

    async with x402HttpxClient(client) as http:
        response = await http.get("https://x402.cambrian.org/evm/lending/sky/vaults")
        print(response.json())

asyncio.run(main())

Payment Flow

1. Send a normal request to the endpoint (no API key needed)
2. Server returns 402 Payment Required with payment details
3. The x402 SDK automatically signs a payment authorization with your wallet
4. The SDK resubmits the request with the signed payment
5. Server verifies payment and returns the API response

The x402 SDK handles steps 2 through 5 automatically.

Network: Base (chain ID 8453) | Currency: USDC | Price: $0.05 per request