> For the complete documentation index, see [llms.txt](https://docs.xft.finance/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.xft.finance/bitnet/use-cases/archive/integration/api-interface.md).

# API Interface

**Authenticate in Sandbox**

**Funding Flow**
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1 Create Fiat Deposit Instructions
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2 Send Fiat to XFT
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3 Check Status of Deposit
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4 View Updated Balances

**Withdrawal Flow**
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1 Create Fiat Account
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2 Confirm Sufficient Funds
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3 Retrieve Bank Account Status
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4 Create Fiat Withdrawal
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5 Check Status of Withdrawal
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6 View Updated Balances

**Stablecoin Payments**

**Set Up Stablecoin Pay-in Workflow**
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1 Add Seller Stablecoin Deposit Address
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2 Receive Stablecoin Payment
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3 Add Pay-in Monitoring and Reconciliation Request
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4 Move USD to Bank Account

**Set Up a Refund Workflow**\
1 Add USD to a Refund Account\
    a. Sandbox Only: Check USD Deposit\
2\. Initiate a Stablecoin Refund\
3\. Add Refund Monitoring and Reconciliation Request\
    a. Sandbox Only: Check USD Withdrawal