> ## Documentation Index > Fetch the complete documentation index at: https://docs.gate.com/llms.txt > Use this file to discover all available pages before exploring further. # Create QR Payment Order > Create a QR payment order and return the prepay ID, QR content, and redirect URL. ## Overview This page documents the `POST /v1/pay/transactions/native` endpoint. The full schema, parameters, and examples are rendered from the linked OpenAPI definition above. ## Notes * Authentication uses the standard GatePay signed headers. * This page documents the standard merchant endpoint. * `qrContent` returns the content URL used to generate the QR code image, not a pre-rendered QR image itself. * For shared signing rules, see [/global/api-reference/version/100/en/common/securityAndSignature](/global/api-reference/version/100/en/common/securityAndSignature). ## OpenAPI ````yaml global/api-reference/version/100/en/openapi/qrpay-openapi.json POST /v1/pay/transactions/native openapi: 3.1.0 info: title: GatePay Web Payment API version: 1.0.0 description: >- OpenAPI 3.1 specification for GatePay Web payment APIs, based on the English Web Payment documentation. It includes creating prepay orders, closing orders, querying order status, and refund-related APIs. servers: - url: https://openplatform.gateapi.io description: Production security: [] tags: - name: web-payment description: >- Web payment related APIs, including creating, closing, querying prepay orders and processing refunds. paths: /v1/pay/transactions/native: post: tags: - web-payment summary: Create QR payment order description: >- Create a QR payment order and return the prepay ID, QR content, and redirect URL. operationId: createPrepayOrder parameters: - $ref: '#/components/parameters/X-GatePay-Certificate-ClientId' - $ref: '#/components/parameters/X-GatePay-Signature' - $ref: '#/components/parameters/X-GatePay-Timestamp' - $ref: '#/components/parameters/X-GatePay-Nonce' requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/CreatePrepayRequest' examples: default: summary: Basic example value: merchantTradeNo: '118223456797' currency: USDT orderAmount: '1.9' env: terminalType: APP goods: goodsName: NF2T goodsDetail: nef-book orderExpireTime: 1660204248000 returnUrl: http://47.99.158.63:8205/payment/callback responses: '200': description: Prepay order created successfully content: application/json: schema: $ref: '#/components/schemas/CreatePrepayResponse' examples: success: summary: Success response value: status: SUCCESS code: '000000' errorMessage: '' data: prepayId: '50913213697495040' terminalType: APP expireTime: 1674100394000 qrContent: >- http://openplatform.gate.io/qr/AjQHJ56mDQ26dtx5ftspl9usV9tlIA8iom35toXhX7Y= location: >- https://114.55.238.130:13555/webpay?prepayid=50913213697495040 components: parameters: X-GatePay-Certificate-ClientId: name: X-GatePay-Certificate-ClientId in: header required: true description: Merchant client ID, obtained from GatePay platform schema: type: string example: 4186d0c6-6a35-55a9-8dc6-5312769dbff8 X-GatePay-Signature: name: X-GatePay-Signature in: header required: true description: HMAC-SHA512 signature for request validation schema: type: string example: >- 672d5650dcc9bb22ebf25fa16c28d03c0e159d742a9176d4340a5da326d75dc8a2ec24c97fa6fc5d1533dd6e968863747e1d86a45e562cbe899f9ed7e9ca7f77 X-GatePay-Timestamp: name: X-GatePay-Timestamp in: header required: true description: >- Millisecond timestamp; the difference from server time must not exceed 30 seconds. schema: type: string example: '1672905655498' X-GatePay-Nonce: name: X-GatePay-Nonce in: header required: true description: Random nonce for replay attack prevention schema: type: string example: '3525756760' schemas: CreatePrepayRequest: type: object description: Request body for creating a Web payment prepay order. properties: merchantTradeNo: type: string description: Merchant order number, up to 100 bytes. currency: type: string description: Order currency, uppercase, such as USDT, BTC, etc. orderAmount: type: string description: Order amount, ranging from [0.0001, 5000000]. fiatCurrency: type: string description: >- Fiat order currency in uppercase, such as EUR, GBP, USD, CNY, JPY, AUD, CAD, CHF. fiatAmount: type: string description: >- Fiat order amount. Minimum 0.01 with maximum precision of 2 decimal places. env: $ref: '#/components/schemas/Env' goods: $ref: '#/components/schemas/Goods' orderExpireTime: type: integer format: int64 description: >- Order expiration time, UTC timestamp in milliseconds. Defaults to 1 hour if omitted. If the provided value exceeds current time + 1 day, it is truncated to current time + 1 day. returnUrl: type: string description: >- The return URL for the order after successful payment, up to 256 characters long. cancelUrl: type: string description: >- The return URL for the order after payment failure, up to 256 characters long. channelId: type: string description: Client name. required: - merchantTradeNo - env - goods CreatePrepayResponse: type: object description: Response body for creating a prepay order. properties: status: type: string description: SUCCESS or FAIL. code: type: string description: Error code. errorMessage: type: string description: Error message. data: type: object description: Prepay order data. properties: prepayId: type: string description: Prepay ID. terminalType: type: string description: >- Transaction source. Available values: APP, WEB, WAP, MINIAPP, OTHERS. expireTime: type: integer format: int64 description: >- Order expiration time in milliseconds. Defaults to 1 hour when orderExpireTime is omitted. If the provided value exceeds current time + 1 day, it is truncated to current time + 1 day. qrContent: type: string description: >- The API returns the URL for the order QR code, developers need to generate the QR code image themselves using this content. location: type: string description: The Web payment component redirect URL after creating the order. required: - prepayId - terminalType - expireTime - qrContent - location required: - status - code Env: type: object description: Transaction source information. properties: terminalType: type: string description: >- Transaction source. Available values: APP, WEB, WAP, MINIAPP, OTHERS. required: - terminalType Goods: type: object description: Goods information. properties: goodsName: type: string description: Goods name, up to 160 characters. goodsDetail: type: string description: Goods description, up to 256 characters. required: - goodsName ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.