curl -X POST -H "Content-Type: application/json" \
  -d '{"address":"0x742d35Cc6634C0532925a3b844Bc454e4438f44e","vaultId":"8d068ba8-072e-421c-b553-6cf989cefeec","claimDate":"2026-10-05","builderCode":"your_registered_builder_code"}' \
  "https://api.base.org/earn/v1/lend/claim"

const batch = await earn("POST", "/lend/claim", {
  address, vaultId: vault.vaultId, claimDate, builderCode: "your_registered_builder_code",
});

batch = earn("POST", "/lend/claim", {
    "address": address, "vaultId": vault["vaultId"], "claimDate": claim_date, "builderCode": "your_registered_builder_code",
})

{
  "version": "2.0.0",
  "from": "0x742d35Cc6634C0532925a3b844Bc454e4438f44e",
  "chainId": "0x2105",
  "calls": [
    { "to": "0x2c4198361F5aF870EC2bE0fffe243610cDe7F84b", "value": "0", "data": "0xb3c9e83d…" }
  ]
}