curl --request GET \
  --url https://grid.x402compute.cc/grid/rewards/claimable

{
  "wallet": "8d3o8m…HH5U",
  "total_usd": 0.0379,
  "epochs": [
    {
      "epoch_id": 1,
      "distributor": "<string>",
      "mint": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "amount_usd": 0.0379,
      "amount_base": 37919,
      "leaf_index": 3,
      "proof": [
        "<string>"
      ],
      "expires_at": "2026-09-21T06:21:00Z"
    }
  ]
}