> ## Documentation Index > Fetch the complete documentation index at: https://developers.uqpay.com/llms.txt > Use this file to discover all available pages before exploring further. # Create Transfer > Initiate Stablecoin Account Fiat fund transfer to Global Account (Type: transfer-out: 4001); Initiate Global Account Fiat fund transfer to Stablecoin Account (Type: transfer-in: 4000). [ *Stablecoin Account API Publisher Disclaimer*](/stablecoin-account/v1.6/guide/stablecoin-account-api-publisher-disclaimer) ## OpenAPI ````yaml /stablecoin-account/v1.6/ramp.yaml post /v1/ramp/transfer openapi: 3.0.2 info: title: Stablecoin Account API version: 1.0.4 description: > UQPAY Stablecoin Account API provides comprehensive stablecoin account management and payment solutions for fiat-cryptocurrency conversion, enabling complete fund flow loop functionality. ## Key Features - Asset Management: Query and manage wallet balances across multiple currencies - Fiat Transfer: Transfer funds between Stablecoin Account and Global Account systems - Currency Exchange: Crypto-Fiat mutual conversion with real-time quotes - Cryptocurrency Deposit: Receive crypto deposits with address management - Cryptocurrency Withdrawal: Initiate and track crypto withdrawals ## Authentication Use API keys to authenticate your client requests when utilizing UQPAY APIs. API keys are unique data strings used to authenticate users and enable access to privileged operations. Your API key should be kept confidential and secure at all times. ## Getting Started 1. Obtain API credentials (x-client-id and x-api-key) 2. Request access token via POST /api/v1/connect/token 3. Set up test environment using sandbox URL 4. Implement authentication with x-auth-token header 5. Start with basic operations ## Support For technical support and integration assistance, contact UQPAY support team. contact: name: UQPAY Support url: https://www.uqpay.com/support email: ramp.tech@uqpay.com license: name: Proprietary url: https://www.uqpay.com/legal/api-terms termsOfService: https://www.uqpay.com/legal/terms x-api-id: ramp-api-v1.0.0 x-logo: url: https://uqpay.com/img/UQPAY_LogoAnimv2.gif backgroundColor: '#FFFFFF' altText: UQPAY Logo x-categories: - Stablecoin Account - Payment Processing - Cryptocurrency - Fiat Exchange servers: - url: https://api-sandbox.uqpaytech.com/api description: Sandbox base URL. - url: https://api.uqpay.com/api description: Production base URL. security: [] tags: - name: Assets description: >- Manage stablecoin wallet accounts and query balances across different currencies. - name: Transfer (Out/In) description: Transfer funds between Stablecoin Account and Global Account systems. - name: Conversions description: Execute currency conversions between cryptocurrency and fiat currencies. - name: Deposits description: Manage cryptocurrency deposit addresses and track deposit transactions. - name: Withdrawals description: Create and manage cryptocurrency withdrawal requests. - name: Configuration description: Query supported assets, networks, and system configuration. - name: Address Book description: Manage wallet address book entries for withdrawals. - name: Travel Rule description: >- Reference data (VASPs, countries, regions) used to populate Travel Rule beneficiary information for address book entries. paths: /v1/ramp/transfer: post: tags: - Transfer (Out/In) summary: Create Transfer description: > Initiate Stablecoin Account Fiat fund transfer to Global Account (Type: transfer-out: 4001); Initiate Global Account Fiat fund transfer to Stablecoin Account (Type: transfer-in: 4000). [ *Stablecoin Account API Publisher Disclaimer*](/stablecoin-account/v1.6/guide/stablecoin-account-api-publisher-disclaimer) operationId: create-transfer parameters: - $ref: '#/components/parameters/XOnBehalfOf' - $ref: '#/components/parameters/XIdempotencyKey' requestBody: content: application/json: schema: $ref: '#/components/schemas/TransferCreateRequest' responses: '200': headers: x-response-id: $ref: '#/components/headers/XResponseId' description: Transfer created successfully content: application/json: schema: $ref: '#/components/schemas/TransferCreateResponse' title: TransferCreateResponse security: - XAuthToken: [] externalDocs: description: API Publisher Disclaimer – UQPAY Australia url: >- /stablecoin-account/v1.6/guide/stablecoin-account-api-publisher-disclaimer components: parameters: XOnBehalfOf: in: header name: x-on-behalf-of schema: type: string required: false description: > Specifies the sub-account on whose behalf the request is made. This should be set to the `account_id`, which can be retrieved via the List Connected Accounts API. If omitted or empty, the request is executed using the master account. More information at Connected Accounts. example: 18523f72-f4de-4f9c-bb8e-ec7d1c4f32be XIdempotencyKey: in: header name: x-idempotency-key schema: type: string format: uuid required: false description: >- A unique identifier (UUID) used to maintain operation idempotency, ensuring that repeated executions of the same operation do not result in unintended effects or duplication. It helps preserve data consistency in the face of network errors, retries, or failures. example: 2adef8e0-9d63-44bc-b975-9b6ae3440dde schemas: TransferCreateRequest: type: object required: - currency - amount - type properties: currency: type: string description: Wallet currency for this transfer out/in example: USD amount: type: string description: Amount for this transfer out/in example: '100.50' type: type: integer description: 'Transfer out: 4001; Transfer in: 4000' example: 4001 reason: type: string description: Transaction remark example: Business transfer TransferCreateResponse: type: object required: - code - message - data properties: code: type: integer example: 200 message: type: string example: Success data: $ref: '#/components/schemas/TransferCreateData' TransferCreateData: type: object description: Create Transfer response (section 4.2.1) required: - order_id - short_order_id - order_status - order_type - amount - currency - processing_fee - create_time properties: order_id: type: string description: Order ID (long format) example: 3c9e22ba-7b5e-4b7c-b92e-197d0406b86b short_order_id: type: string description: Order ID (short format) example: TO260123-JZBHC9IA order_status: type: string description: Order status enum: - Submitted - Pending - Failed - Success - Submit Failed example: Pending order_type: type: string description: Order type example: Transfer Out amount: type: number format: decimal description: Amount example: 100 currency: type: string description: Currency example: USD processing_fee: type: number format: decimal description: Processing fee example: 0 reason: type: string description: Remark example: testAPI create_time: type: string description: Creation time example: '2026-01-23 13:12:27 +08:00' complete_time: type: string description: Completion time example: '' message: type: string description: Failure reason if request failed headers: XResponseId: description: >- Universally unique identifier (UUID v4) for the response. Helpful for identifying a request when communicating with UQPAY support. schema: type: string format: uuid example: 2adba88e-9d63-44bc-b975-9b6ae3440dde securitySchemes: XAuthToken: type: apiKey in: header name: x-auth-token description: The API token for login provided by UQPay. ````