curl --request GET \
  --url https://sandbox.groundtech.co/v2/wallets/{id}/yield \
  --header 'Authorization: Bearer <token>'

{
  "walletId": "b1c2d3e4-0000-4000-8000-000000000001",
  "earnedUsd": "250.000000",
  "currentBalanceUsd": "82500.000000",
  "positions": [
    {
      "yieldSourceId": "syrup-usdc",
      "name": "Syrup USDC",
      "apyBps": 453,
      "pct": 40
    },
    {
      "yieldSourceId": "morpho-gauntlet-usdc",
      "name": "Morpho Gauntlet USDC Prime",
      "apyBps": 472,
      "pct": 30
    },
    {
      "yieldSourceId": "morpho-steakhouse-usdc",
      "name": "Morpho Steakhouse USDC Prime",
      "apyBps": 468,
      "pct": 30
    }
  ]
}