> ## Documentation Index > Fetch the complete documentation index at: https://api-reference.hyperswitch.io/llms.txt > Use this file to discover all available pages before exploring further. # Payment Method - Set Default Payment Method for Customer > Set the Payment Method as Default for the Customer. ## OpenAPI ````yaml post /{customer_id}/payment_methods/{payment_method_id}/default openapi: 3.0.3 info: title: Hyperswitch - API Documentation description: > ## Get started Hyperswitch provides a collection of APIs that enable you to process and manage payments. Our APIs accept and return JSON in the HTTP body, and return standard HTTP response codes. You can consume the APIs directly using your favorite HTTP/REST library. We have a testing environment referred to "sandbox", which you can setup to test API calls without affecting production data. Currently, our sandbox environment is live while our production environment is under development and will be available soon. You can sign up on our Dashboard to get API keys to access Hyperswitch API. ### Environment Use the following base URLs when making requests to the APIs: | Environment | Base URL | |---------------|------------------------------------| | Sandbox | | | Production | | ## Authentication When you sign up on our [dashboard](https://app.hyperswitch.io) and create a merchant account, you are given a secret key (also referred as api-key) and a publishable key. You may authenticate all API requests with Hyperswitch server by providing the appropriate key in the request Authorization header. | Key | Description | |-----------------|-----------------------------------------------------------------------------------------------| | api-key | Private key. Used to authenticate all API requests from your merchant server | | publishable key | Unique identifier for your account. Used to authenticate API requests from your app's client | Never share your secret api keys. Keep them guarded and secure. contact: name: Hyperswitch Support url: https://hyperswitch.io email: support.global@juspay.io license: name: Apache-2.0 version: 0.1.0 servers: - url: https://sandbox.hyperswitch.io description: Sandbox Environment security: [] tags: - name: Merchant Account description: Create and manage merchant accounts - name: Profile description: Create and manage profiles - name: Merchant Connector Account description: Create and manage merchant connector accounts - name: Payments description: Create and manage one-time payments, recurring payments and mandates - name: Refunds description: Create and manage refunds for successful payments - name: Mandates description: Manage mandates - name: Customers description: Create and manage customers - name: Payment Methods description: Create and manage payment methods of customers - name: Disputes description: Manage disputes - name: API Key description: Create and manage API Keys - name: Payouts description: Create and manage payouts - name: payment link description: Create payment link - name: Routing description: Create and manage routing configurations - name: Event description: Manage events - name: Authentication description: Create and manage authentication - name: Subscriptions description: Subscription management and billing endpoints - name: Card Issuer description: Create and manage card issuers paths: /{customer_id}/payment_methods/{payment_method_id}/default: post: tags: - Payment Methods summary: Payment Method - Set Default Payment Method for Customer description: Set the Payment Method as Default for the Customer. operationId: Set the Payment Method as Default parameters: - name: customer_id in: path description: The unique identifier for the Customer required: true schema: type: string - name: payment_method_id in: path description: The unique identifier for the Payment Method required: true schema: type: string responses: '200': description: Payment Method has been set as default content: application/json: schema: $ref: '#/components/schemas/CustomerDefaultPaymentMethodResponse' '400': description: Payment Method has already been set as default for that customer '404': description: Payment Method not found for the customer security: - ephemeral_key: [] components: schemas: CustomerDefaultPaymentMethodResponse: type: object required: - customer_id - payment_method properties: default_payment_method_id: type: string description: The unique identifier of the Payment method example: card_rGK4Vi5iSW70MY7J2mIg nullable: true customer_id: type: string description: The unique identifier of the customer. example: cus_y3oqhf46pyzuxjbcn2giaqnb44 maxLength: 64 minLength: 1 payment_method: $ref: '#/components/schemas/PaymentMethod' payment_method_type: allOf: - $ref: '#/components/schemas/PaymentMethodType' nullable: true PaymentMethod: type: string description: 'Indicates the type of payment method. Eg: ''card'', ''wallet'', etc.' enum: - card - card_redirect - pay_later - wallet - bank_redirect - bank_transfer - crypto - bank_debit - reward - real_time_payment - upi - voucher - gift_card - open_banking - mobile_payment - network_token PaymentMethodType: type: string description: >- Indicates the sub type of payment method. Eg: 'google_pay' & 'apple_pay' for wallets. enum: - ach - affirm - afterpay_clearpay - alfamart - ali_pay - ali_pay_hk - alma - amazon_pay - paysera - apple_pay - atome - bacs - bancontact_card - becs - benefit - bizum - blik - bluecode - boleto - bca_bank_transfer - bni_va - breadpay - bri_va - bhn_card_network - card_redirect - cimb_va - classic - credit - crypto_currency - cashapp - dana - danamon_va - debit - duit_now - efecty - eft - eft_debit_order - eps - flexiti - fps - evoucher - giropay - givex - google_pay - go_pay - gcash - ideal - interac - indomaret - klarna - kakao_pay - local_bank_redirect - mandiri_va - knet - mb_way - mobile_pay - momo - momo_atm - multibanco - online_banking_thailand - online_banking_czech_republic - online_banking_finland - online_banking_fpx - online_banking_poland - online_banking_slovakia - oxxo - pago_efectivo - permata_bank_transfer - open_banking_uk - pay_bright - payjustnow - paypal - paze - pix - pix_key - pix_emv - pix_automatico_qr - pix_automatico_push - pay_safe_card - przelewy24 - prompt_pay - pse - qris - red_compra - red_pagos - samsung_pay - sepa - sepa_bank_transfer - sepa_guarenteed_debit - skrill - sofort - swish - touch_n_go - trustly - twint - upi_collect - upi_intent - upi_qr - vipps - viet_qr - venmo - walley - we_chat_pay - seven_eleven - lawson - mini_stop - family_mart - seicomart - pay_easy - local_bank_transfer - mifinity - open_banking_pis - direct_carrier_billing - instant_bank_transfer - instant_bank_transfer_finland - instant_bank_transfer_poland - revolut_pay - indonesian_bank_transfer - open_banking - network_token securitySchemes: ephemeral_key: type: apiKey in: header name: api-key description: >- Ephemeral keys provide temporary access to singular data, such as access to a single customer object for a short period of time. ````