Simulate sending funds

Simulate sending funds to the bank account as instructed in the quote. This endpoint is only for the sandbox environment and will fail for production platforms/keys.

POST /sandbox/send

Simulate sending funds

cURL

curl --request POST \
  --url https://api.lightspark.com/grid/2025-10-13/sandbox/send \
  --header 'Authorization: Basic <encoded-value>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "quoteId": "Quote:019542f5-b3e7-1d02-0000-000000000006",
  "currencyCode": "USD",
  "currencyAmount": 1000
}
'

200

{
  "id": "Transaction:019542f5-b3e7-1d02-0000-000000000004",
  "status": "PENDING",
  "type": "OUTGOING",
  "destination": {
    "destinationType": "ACCOUNT",
    "accountId": "ExternalAccount:a12dcbd6-dced-4ec4-b756-3c3a9ea3d123",
    "currency": "EUR"
  },
  "customerId": "Customer:019542f5-b3e7-1d02-0000-000000000001",
  "platformCustomerId": "18d3e5f7b4a9c2",
  "source": {
    "sourceType": "ACCOUNT",
    "accountId": "InternalAccount:e85dcbd6-dced-4ec4-b756-3c3a9ea3d965",
    "currency": "USD"
  },
  "sentAmount": {
    "amount": 12550,
    "currency": {
      "code": "USD",
      "name": "United States Dollar",
      "symbol": "$",
      "decimals": 2
    }
  },
  "settledAt": "2025-08-15T14:30:00Z",
  "createdAt": "2025-08-15T14:25:18Z",
  "updatedAt": "2025-08-15T14:30:00Z",
  "description": "Payment for invoice #1234",
  "counterpartyInformation": {
    "FULL_NAME": "John Sender",
    "BIRTH_DATE": "1985-06-15",
    "NATIONALITY": "DE"
  },
  "receivedAmount": {
    "amount": 12550,
    "currency": {
      "code": "USD",
      "name": "United States Dollar",
      "symbol": "$",
      "decimals": 2
    }
  },
  "exchangeRate": 1.08,
  "fees": 10,
  "quoteId": "Quote:019542f5-b3e7-1d02-0000-000000000006",
  "paymentInstructions": [
    {
      "accountOrWalletInfo": {
        "accountType": "USD_ACCOUNT",
        "paymentRails": [
          "ACH",
          "WIRE"
        ],
        "accountNumber": "1234567890",
        "routingNumber": "021000021",
        "bankName": "Chase Bank",
        "reference": "UMA-Q12345-REF"
      },
      "instructionsNotes": "Include reference UMA-Q12345-REF in memo"
    },
    {
      "accountOrWalletInfo": {
        "accountType": "SPARK_WALLET",
        "assetType": "BTC",
        "address": "spark1pgssyuuuhnrrdjswal5c3s3rafw9w3y5dd4cjy3duxlf7hjzkp0rqx6dj6mrhu",
        "invoice": "lnbc15u1p3xnhl2pp5jptserfk3zk4qy42tlucycrfwxhydvlemu9pqr93tuzlv9cc7g3sdqsvfhkcap3xyhx7un8cqzpgxqzjcsp5f8c52y2stc300gl6s4xswtjpc37hrnnr3c9wvtgjfuvqmpm35evq9qyyssqy4lgd8tj637qcjp05rdpxxykjenthxftej7a2zzmwrmrl70fyj9hvj0rewhzj7jfyuwkwcg9g2jpwtk3wkjtwnkdks84hsnu8xps5vsq4gj5hs"
      }
    }
  ],
  "refund": {
    "reference": "UMA-Q12345-REFUND",
    "initiatedAt": "2025-08-15T14:30:00Z",
    "status": "COMPLETED",
    "settledAt": "2025-08-15T14:35:00Z",
    "reason": "TRANSACTION_FAILED"
  },
  "rateDetails": {
    "counterpartyMultiplier": 1.08,
    "counterpartyFixedFee": 10,
    "gridApiMultiplier": 0.925,
    "gridApiFixedFee": 10,
    "gridApiVariableFeeRate": 0.003,
    "gridApiVariableFeeAmount": 30
  },
  "failureReason": "QUOTE_EXPIRED"
}

Authorizations

Authorization · string · header · required

API token authentication using format <api token id>:<api client secret>

Body

application/json

quoteId · string · required

The unique identifier of the quote

Example:

"Quote:019542f5-b3e7-1d02-0000-000000000006"

currencyCode · string · required

Currency code for the funds to be sent

Example:

"USD"

currencyAmount · integer<int64>

The amount to send in the smallest unit of the currency (eg. cents). If not provided, the amount will be derived from the quote.

Example:

1000

Response

200

application/json

Funds received successfully

id · string · required

Unique identifier for the transaction

Example:

"Transaction:019542f5-b3e7-1d02-0000-000000000004"

status · enum<string> · required

Status of an outgoing payment transaction.

Status	Description
PENDING	Quote is pending confirmation
EXPIRED	Quote wasn't executed before expiry window
PROCESSING	Executing the quote after receiving funds
COMPLETED	Payout successfully reached the destination
FAILED	Something went wrong — accompanied by a failureReason

Available options: PENDING, EXPIRED, PROCESSING, COMPLETED, FAILED

type · enum<string> · required

Type of transaction (incoming payment or outgoing payment)

Available options: OUTGOING

destination · Account Destination · object · required

Destination account details

Account Destination

UMA Address Destination

External Account Details Destination

Show child attributes

customerId · string · required

System ID of the customer (sender for outgoing, recipient for incoming)

Example:

"Customer:019542f5-b3e7-1d02-0000-000000000001"

platformCustomerId · string · required

Platform-specific ID of the customer (sender for outgoing, recipient for incoming)

Example:

"18d3e5f7b4a9c2"

source · Account Source · object · required

Source account details

Account Source

UMA Address Source

Real-time Funding Source

Show child attributes

sentAmount · object · required

Amount sent in the sender's currency

Show child attributes

settledAt · string<date-time>

When the payment was or will be settled

Example:

"2025-08-15T14:30:00Z"

createdAt · string<date-time>

When the transaction was created

Example:

"2025-08-15T14:25:18Z"

updatedAt · string<date-time>

When the transaction was last updated

Example:

"2025-08-15T14:30:00Z"

description · string

Optional memo or description for the payment

Example:

"Payment for invoice #1234"

counterpartyInformation · object

Additional information about the counterparty, if available and relevant to the transaction and platform. Only applicable for transactions to/from UMA addresses.

Example:

{
  "FULL_NAME": "John Sender",
  "BIRTH_DATE": "1985-06-15",
  "NATIONALITY": "DE"
}

receivedAmount · object

Amount to be received by recipient in the recipient's currency

Show child attributes

exchangeRate · number

Number of sending currency units per receiving currency unit.

Example:

1.08

fees · integer<int64>

The fees associated with the quote in the smallest unit of the sending currency (eg. cents).

Required range: x >= 0

Example:

10

quoteId · string

The ID of the quote that was used to trigger this payment

Example:

"Quote:019542f5-b3e7-1d02-0000-000000000006"

paymentInstructions · object[]

Payment instructions for executing the payment.

Show child attributes

Example:

[
  {
    "accountOrWalletInfo": {
      "accountType": "USD_ACCOUNT",
      "paymentRails": ["ACH", "WIRE"],
      "accountNumber": "1234567890",
      "routingNumber": "021000021",
      "bankName": "Chase Bank",
      "reference": "UMA-Q12345-REF"
    },
    "instructionsNotes": "Include reference UMA-Q12345-REF in memo"
  },
  {
    "accountOrWalletInfo": {
      "accountType": "SPARK_WALLET",
      "assetType": "BTC",
      "address": "spark1pgssyuuuhnrrdjswal5c3s3rafw9w3y5dd4cjy3duxlf7hjzkp0rqx6dj6mrhu",
      "invoice": "lnbc15u1p3xnhl2pp5jptserfk3zk4qy42tlucycrfwxhydvlemu9pqr93tuzlv9cc7g3sdqsvfhkcap3xyhx7un8cqzpgxqzjcsp5f8c52y2stc300gl6s4xswtjpc37hrnnr3c9wvtgjfuvqmpm35evq9qyyssqy4lgd8tj637qcjp05rdpxxykjenthxftej7a2zzmwrmrl70fyj9hvj0rewhzj7jfyuwkwcg9g2jpwtk3wkjtwnkdks84hsnu8xps5vsq4gj5hs"
    }
  }
]

refund · object

The refund if transaction was refunded.

Show child attributes

rateDetails · object

Details about the rate and fees for the transaction.

Show child attributes

failureReason · enum<string>

If the transaction failed, this field provides the reason for failure.

Available options: QUOTE_EXPIRED, QUOTE_EXECUTION_FAILED, LIGHTNING_PAYMENT_FAILED, FUNDING_AMOUNT_MISMATCH, COUNTERPARTY_POST_TX_FAILED, TIMEOUT