# CashBill

> CashBill API documentation: Payments API, BLIK and Account API

## Account API

- [Account API](/api/account/account-api.md): In order to start using the Account API, you must have an API key, which you can generate in the client panel. Each API key has independent permissions assigned to it.

### Test Resource

- [Test the REST connection.](/api/account/test-the-rest-connection.md): Returns the same message it receives.

### Account Resource

- [Retrieves information about the current balance of the account.](/api/account/retrieves-information-about-the-current-balance-of-the-account.md): The current balance of the account in PLN.
- [Payout all funds.](/api/account/payout-all-funds.md): The payment will be made to the bank account defined in the CashBill panel.
- [Payout specific value of funds.](/api/account/payout-specific-value-of-funds.md): The payment will be made to the bank account defined in the CashBill panel.

### Refund Resource

- [Refund order for the transaction.](/api/account/refund-order-for-the-transaction.md): Refund request for the transaction must contain a unique nonce. Refund requests with the same nonce will be rejected.
- [Retrieves information about the refund status.](/api/account/retrieves-information-about-the-refund-status.md): There are 3 possible values ok, err and pending.

### Nonce Resource

- [Verifying the correctness of the executed order.](/api/account/verifying-the-correctness-of-the-executed-order.md): Most operations require a unique operation identifier (nonce) to control the execution of the operation and to provide error handling in the event of connection problems.

## Payment Gateway API

- [CashBill Payments API](/api/payment-gateway/cashbill-payments-api.md): To use REST API payment point should be configured as “Web Service”.

### Payment Resource

- [Creating new transaction](/api/payment-gateway/creating-new-transaction.md): You can put information about landing page for exist transaction.
- [Requesting details of transaction](/api/payment-gateway/requesting-details-of-transaction.md): You can request detailed information about transaction.
- [Putting landing page URL for exist transaction](/api/payment-gateway/putting-landing-page-url-for-exist-transaction.md): You can put information about landing page for exist transaction.

### Payment Channels Resource

- [Requesting available payment channels](/api/payment-gateway/requesting-available-payment-channels.md): You can obtain list of available payment channels from paymentchannels resource.

### Blik Alias Resource

- [Retrieve additional transaction data](/api/payment-gateway/retrieve-additional-transaction-data.md): You can retrieve additional information for a transaction, such as BLIK alias details.
- [Unregister BLIK alias](/api/payment-gateway/unregister-blik-alias.md): You can unregister the BLIK alias associated with a transaction.
- [Notification Service](/api/payment-gateway/notification-service.md): Informations about the CashBill Notification Service
- [CashBill Payments API 1](/api/payment-gateway/available-transaction-statuses.md): List of all transaction statuses for CashBill Payments.

### Usage Examples

- [Get a list of available payment channels](/api/payment-gateway/examples/list-of-payment-channels.md): Example of a request to get a list of available payment channels.
- [Start transaction](/api/payment-gateway/examples/start-transaction.md): Example of a request to start a transaction
- [Change landing page for an existing transaction](/api/payment-gateway/examples/change-landing-page.md): Example of a request to change the landing page for an existing transaction.
- [Get payment details](/api/payment-gateway/examples/payment-details.md): Example of a payment details request

## BLIK

- [BLIK WEB Redirect](/api/blik/blik-redirect-web.md): Start a standard BLIK transaction and redirect the customer to the BLIK payment page.
- [BLIK Pay Later](/api/blik/blik-pay-later.md): Start a BLIK Pay Later transaction using the standard redirect integration.

### BLIK Level 0

- [Introduction](/api/blik/blik-level-0/introduction.md): Basic informations about BLIK Level 0
- [New Transaction](/api/blik/blik-level-0/new-transaction.md): Basic information about initiating a BLIK Level 0 transaction.
- [Notifications](/api/blik/blik-level-0/notifications.md): Information about additional notifications for BLIK Level 0.

### BLIK One Click

- [Introduction](/api/blik/blik-one-click/introduction.md): Learn how to integrate BLIK One Click with the CashBill API, including payment channel activation, required transaction parameters and notifications.
- [New Transaction](/api/blik/blik-one-click/new-transaction.md): Create a BLIK One Click payment with the CashBill API. Explore required parameters, alias registration with a BLIK code, PHP examples and API responses.
- [Verify Registered Alias](/api/blik/blik-one-click/verity-registred-alias.md): Check the BLIK alias associated with a transaction using the CashBill API. See a PHP request, returned alias data and an example alias-not-found response.
- [Subsequent Transaction](/api/blik/blik-one-click/subsequent-transaction.md): Start subsequent BLIK One Click payments using a registered alias with the CashBill API. See required parameters and a PHP example without a BLIK code.
- [Unregister Alias](/api/blik/blik-one-click/unregister-alias.md): Unregister a BLIK alias associated with a transaction using the CashBill API. See a signed PHP request, the success response and notification details.
- [Notifications](/api/blik/blik-one-click/notifications.md): Handle BLIK One Click notifications for payment status, declined transactions and alias events. Verify signatures and send the required acknowledgment.

### BLIK Recurring


#### Model O

- [Introduction](/api/blik/blik-recurring/model-o/introduction.md): Basic information about BLIK Recurring Payments in Model O
- [New Transaction](/api/blik/blik-recurring/model-o/new-transaction.md): Activate BLIK Recurring Payments in Model O with the CashBill API. Explore required parameters, alias registration and a PHP example for the first payment.
- [Verify Registered Alias](/api/blik/blik-recurring/model-o/verify-registred-alias.md): Check a BLIK Recurring Payments alias using additional transaction data from the CashBill API. See a PHP request, alias details and an alias-not-found error.
- [Subsequent Transaction](/api/blik/blik-recurring/model-o/subsequent-transaction.md): Start subsequent BLIK recurring payments in Model O using a registered alias. See required CashBill API parameters and a PHP example for automatic charges.
- [Unregister Alias](/api/blik/blik-recurring/model-o/unregister-alias.md): Unregister a BLIK Recurring Payments alias with the CashBill API. See a signed PHP request, the HTTP 204 success response and unregistration notification.
- [Notifications](/api/blik/blik-recurring/model-o/notifications.md): Information about additional notifications for BLIK Recurring Model O.
- [Alias Status Codes](/api/blik/alias-statuses.md): List of all available status codes for BLIK Alias implementation.
- [Decline Status Codes](/api/blik/decline-status-codes.md): List of all status codes for BLIK implementation.

## Other Pages

- /
- /category/api/account
- /category/api/blik
- /category/api/blik/blik-level-0
- /category/api/blik/blik-one-click
- /category/api/blik/blik-recurring
- /category/api/blik/blik-recurring/model-o
- /category/api/payment-gateway