लाइव क्रिप्टो yield डेटा के साथ बिल्ड करें।

// Best stablecoin yield: fetch USDC lending rates, sort by rate
const res = await fetch(
  "https://api.bitcompare.net/api/v1/rates/USDC?category=lending",
  { headers: { Authorization: `Bearer ${process.env.BITCOMPARE_API_KEY}` } }
)
const { data } = await res.json()
const best = data.rates.sort((a, b) => Number(b.rate) - Number(a.rate))[0]

{
  "data": {
    "symbol": "USDC",
    "rates": [
      {
        "provider": "fluid",
        "symbol": "USDC",
        "category": "lending",
        "rate": 6.29,
        "metadata": {
          "chain": "Ethereum",
          "source": "defillama_yields",
          "poolId": "4438dabc-7f0c-430b-8136-2722711ae663",
          "project": "fluid-lending",
          "tvlUsd": 116838581,
          "apyBase": 5.25,
          "exposure": "single",
          "poolMeta": null,
          "apyReward": 1.04,
          "apyMean30D": 6.85431,
          "isStablecoin": true
        },
        "lastUpdated": "2026-06-21T11:20:50.559Z",
        "coinId": "usd-coin",
        "providerSymbol": "USDC",
        "unitType": "absolute",
        "unitSymbol": null
      },
      {
        "provider": "euler-v2",
        "symbol": "USDC",
        "category": "lending",
        "rate": 2.78441,
        "metadata": {
          "chain": "Ethereum",
          "source": "defillama_yields",
          "poolId": "0fde8996-ecdf-441c-94a9-ec67403e9b8c",
          "project": "euler-v2",
          "tvlUsd": 14522414,
          "apyBase": 2.78441,
          "exposure": "single",
          "poolMeta": "EVK Vault eUSDC-80",
          "apyReward": null,
          "apyMean30D": 2.68741,
          "isStablecoin": true
        },
        "lastUpdated": "2026-06-21T11:20:34.976Z",
        "coinId": "usd-coin",
        "providerSymbol": "USDC",
        "unitType": "absolute",
        "unitSymbol": null
      }
    ],
    "count": 18
  }
}

# Track staking rewards for ETH
curl -s "https://api.bitcompare.net/api/v1/rates/ETH?category=staking" \
  -H "Authorization: Bearer $BITCOMPARE_API_KEY"

{
  "data": {
    "symbol": "ETH",
    "rates": [
      {
        "provider": "etherfi",
        "symbol": "ETH",
        "category": "staking",
        "rate": 2.86924,
        "metadata": {
          "chain": "Ethereum",
          "source": "defillama_yields",
          "poolId": "46bd2bdf-6d92-4066-b482-e885ee172264",
          "project": "ether.fi-stake",
          "tvlUsd": 3084195719,
          "apyBase": 2.77906,
          "exposure": "single",
          "poolMeta": null,
          "apyReward": 0.09018,
          "apyMean30D": 2.80592,
          "isStablecoin": false
        },
        "lastUpdated": "2026-06-21T11:21:12.573Z",
        "coinId": "ethereum",
        "providerSymbol": "WEETH",
        "unitType": "absolute",
        "unitSymbol": null
      },
      {
        "provider": "stakewise",
        "symbol": "ETH",
        "category": "staking",
        "rate": 2.17712,
        "metadata": {
          "chain": "Ethereum",
          "source": "defillama_yields",
          "poolId": "4d01599c-69ae-41a3-bae1-5fab896f04c8",
          "project": "stakewise-v2",
          "tvlUsd": 233844142,
          "apyBase": 2.17712,
          "exposure": "single",
          "poolMeta": null,
          "apyReward": null,
          "apyMean30D": 2.42958,
          "isStablecoin": false
        },
        "lastUpdated": "2026-06-21T11:21:12.476Z",
        "coinId": "ethereum",
        "providerSymbol": "OSETH",
        "unitType": "absolute",
        "unitSymbol": null
      }
    ],
    "count": 11
  }
}

// Compare BTC lending vs borrowing rates (one call per category)
const [lending, borrowing] = await Promise.all(
  ["lending", "borrowing"].map((category) =>
    fetch(
      `https://api.bitcompare.net/api/v1/rates/BTC?category=${category}`,
      { headers: { Authorization: `Bearer ${process.env.BITCOMPARE_API_KEY}` } }
    ).then((r) => r.json())
  )
)
const spread =
  Number(borrowing.data.rates[0].rate) - Number(lending.data.rates[0].rate)

{
  "data": {
    "symbol": "BTC",
    "rates": [
      {
        "provider": "spark",
        "symbol": "BTC",
        "category": "lending",
        "rate": 0.00001,
        "metadata": {
          "chain": "Ethereum",
          "source": "defillama_yields",
          "poolId": "03406d3a-fcc4-4fe3-8809-7a95222951b6",
          "project": "sparklend",
          "tvlUsd": 176215182,
          "apyBase": 0.00001,
          "exposure": "single",
          "poolMeta": null,
          "apyReward": null,
          "apyMean30D": 0.00001,
          "isStablecoin": false
        },
        "lastUpdated": "2026-06-21T11:21:12.264Z",
        "coinId": "bitcoin",
        "providerSymbol": "WBTC",
        "unitType": "absolute",
        "unitSymbol": null
      },
      {
        "provider": "okx",
        "symbol": "BTC",
        "category": "lending",
        "rate": 1.825,
        "metadata": null,
        "lastUpdated": "2026-06-21T11:21:10.265Z",
        "coinId": "bitcoin",
        "providerSymbol": "BTC",
        "unitType": "absolute",
        "unitSymbol": null
      }
    ],
    "count": 14
  }
}