YOUHODLERBusiness API
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postPreview a fee

Returns a non-binding fee preview for a planned operation. Pass principal_amount (and optionally settlement_amount for asymmetric flows like off-ramp). The response is wrapped in a fee_preview envelope.

Request

Request URL

POST
POST /fee-previews

Request Body

application/json
{
  "operation_type": "withdrawal_crypto",
  "principal_amount": {
    "amount": "100.00",
    "currency": "USDC"
  },
  "requested_at": "2026-05-01T10:00:00Z",
  "service_type": "withdrawal_crypto",
  "settlement_amount": null,
  "subject_ref": "enterprises/b8e2f1a0-4c3d-4e5f-9a1b-2c3d4e5f6a7b"
}

Responses

Response

application/json
{
  "fee_preview": {
    "binding": "non_binding",
    "computed_at": "2026-05-01T10:00:00Z",
    "enterprise_ca_version": 2,
    "fee_summary": {
      "components": [
        {
          "type": "network_fee",
          "amount": {
            "amount": "1.00",
            "currency": "USDC"
          },
          "payee_ref": null
        }
      ],
      "total": {
        "amount": "1.00",
        "currency": "USDC"
      }
    },
    "operation_type": "withdrawal_crypto",
    "platform_ca_version": 1
  }
}

Operation succeeded.

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