Xây dựng với dữ liệu lợi suất tiền điện tử trực tiếp.

// 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": "gemini",
        "symbol": "USDC",
        "category": "lending",
        "rate": 0.01,
        "metadata": {
          "depositUsdLimit": 25000000
        },
        "lastUpdated": "2026-06-21T08:20:20.157Z",
        "coinId": null,
        "providerSymbol": "USDC",
        "unitType": "absolute",
        "unitSymbol": null
      },
      {
        "provider": "nebeus",
        "symbol": "USDC",
        "category": "lending",
        "rate": 12,
        "metadata": {
          "notes": "Standard product conditions",
          "rateType": "lending",
          "minAmount": 1000
        },
        "lastUpdated": "2026-06-21T08:20:14.674Z",
        "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": "stader",
        "symbol": "ETH",
        "category": "staking",
        "rate": 2.25,
        "metadata": null,
        "lastUpdated": "2026-06-21T08:20:37.773Z",
        "coinId": null,
        "providerSymbol": "ETH",
        "unitType": "absolute",
        "unitSymbol": null
      },
      {
        "provider": "lido",
        "symbol": "ETH",
        "category": "staking",
        "rate": 2.303,
        "metadata": null,
        "lastUpdated": "2026-06-21T08:20:16.531Z",
        "coinId": null,
        "providerSymbol": "ETH",
        "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": "okx",
        "symbol": "BTC",
        "category": "lending",
        "rate": 1.825,
        "metadata": null,
        "lastUpdated": "2026-06-21T08:21:27.005Z",
        "coinId": "bitcoin",
        "providerSymbol": "BTC",
        "unitType": "absolute",
        "unitSymbol": null
      },
      {
        "provider": "fluid",
        "symbol": "BTC",
        "category": "lending",
        "rate": 0.14,
        "metadata": {
          "chain": "Ethereum",
          "source": "defillama_yields",
          "poolId": "946c7197-7b0b-438b-a3a0-6de4288c534a",
          "project": "fluid-lending",
          "tvlUsd": 23282354,
          "apyBase": 0.14,
          "exposure": "single",
          "poolMeta": null,
          "apyReward": null,
          "apyMean30D": 0.09911,
          "isStablecoin": false
        },
        "lastUpdated": "2026-06-21T08:21:26.991Z",
        "coinId": "bitcoin",
        "providerSymbol": "WBTC",
        "unitType": "absolute",
        "unitSymbol": null
      }
    ],
    "count": 14
  }
}