Slash API: Retrieve Balances and Transaction Data

How to Retrieve Balances and Transaction Data with the Slash API

Slash's API gives you programmatic access to your account balances and transaction data.

What You'll Need

• An API key created from your Developer Account settings
• Your account ID(s)

Overview

The Slash API provides several endpoints for financial data:

• List Accounts retrieves all accounts you have access to
• Get Account Balances returns current balance information
• List Transactions retrieves transactions with optional filtering
• Get Transaction fetches details for a single transaction
• Get Transaction Aggregation provides summarized transaction data

Step 1: List Your Accounts

GET https://api.joinslash.com/account

Step 2: Retrieve Account Balances

GET https://api.joinslash.com/account/{accountId}/balance

Balance Types:

• debit: Balance for debit accounts
• cash: For charge card accounts only (excess cash not being used as collateral)
• credit: For charge card accounts only (amount available to spend)

Balance Fields:

• available: Amount immediately available to use
• posted: Amount that has actually posted
• timestamp: When the balance was computed

All amounts are returned in cents.

Step 3: Retrieve Transactions

GET https://api.joinslash.com/transaction

Filter Parameters: legalEntityId, accountId, virtualAccountId, from_date, to_date, from_authorized_at, to_authorized_at, status, detailed_status

Transaction Amounts: Negative amounts are debits (money out), positive amounts are credits (money in).

Step 4: Understand Transaction Statuses

Basic Status: pending, posted, failed

Detailed Status: pending, pending_approval, in_review, canceled, failed, settled, declined, refund, reversed, returned, dispute

Step 5: Get a Single Transaction

GET https://api.joinslash.com/transaction/{transactionId}

Step 6: Get Transaction Aggregations

GET https://api.joinslash.com/transaction/aggregation

Additional Considerations

• Pagination via cursor
• Date filtering uses Unix timestamps in milliseconds
• Rate limits apply
• Full API docs at https://api.joinslash.com/openapi

Need More Help?

Contact support through the Slash dashboard or email support@joinslash.com.