สร้างสิ่งที่ยอดเยี่ยมด้วยข้อมูล crypto yield แบบสดใจ

// 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": "aqru",
        "symbol": "USDC",
        "category": "lending",
        "rate": 6,
        "metadata": null,
        "lastUpdated": "2026-07-11T18:25:52.729Z",
        "coinId": "usd-coin",
        "providerSymbol": "USDC",
        "unitType": "absolute",
        "unitSymbol": null
      },
      {
        "provider": "compound-v3",
        "symbol": "USDC",
        "category": "lending",
        "rate": 3.2305078,
        "metadata": {
          "mode": "comet_supply_rate",
          "method": "getSupplyRate",
          "source": "onchain_rate",
          "chainId": 1,
          "contract": "0xc3d688B66703497DAA19211EEdff47f25384cdc3"
        },
        "lastUpdated": "2026-07-11T18:25:43.067Z",
        "coinId": "usd-coin",
        "providerSymbol": "USDC",
        "unitType": "absolute",
        "unitSymbol": null
      }
    ],
    "count": 19
  }
}

# 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": "stakin",
        "symbol": "ETH",
        "category": "staking",
        "rate": 2.71,
        "metadata": null,
        "lastUpdated": "2026-07-11T18:25:12.577Z",
        "coinId": "ethereum",
        "providerSymbol": "ETH",
        "unitType": "absolute",
        "unitSymbol": null
      },
      {
        "provider": "frax",
        "symbol": "ETH",
        "category": "staking",
        "rate": 2.59438802,
        "metadata": {
          "url": "https://api.frax.finance/v2/frxeth/summary/latest",
          "field": "sfrxethApr",
          "source": "multi_source"
        },
        "lastUpdated": "2026-07-11T18:20:44.294Z",
        "coinId": "ethereum",
        "providerSymbol": "ETH",
        "unitType": "absolute",
        "unitSymbol": null
      }
    ],
    "count": 12
  }
}

// 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": "silo",
        "symbol": "BTC",
        "category": "lending",
        "rate": 0,
        "metadata": {
          "headline": {
            "apy": 0,
            "name": "0x1c82f20f5edfb9251976a74b33869006b291cb18",
            "tvlUsd": 6.497031
          },
          "variants": [
            {
              "apy": 0,
              "name": "0x1c82f20f5edfb9251976a74b33869006b291cb18",
              "tvlUsd": 6.497031
            }
          ],
          "truncated": true,
          "variantCount": 8
        },
        "lastUpdated": "2026-07-11T18:20:55.914Z",
        "coinId": "bitcoin",
        "providerSymbol": "CBBTC",
        "unitType": "absolute",
        "unitSymbol": null
      },
      {
        "provider": "youhodler",
        "symbol": "BTC",
        "category": "lending",
        "rate": 8,
        "metadata": null,
        "lastUpdated": "2026-07-11T18:20:55.636Z",
        "coinId": "bitcoin",
        "providerSymbol": "BTC",
        "unitType": "absolute",
        "unitSymbol": null
      }
    ],
    "count": 16
  }
}