Authentication
/
Request OAuth Token

Computop Paygate API (2.0.0)

The Computop Paygate API allows you to seamlessly process and manage payments, supporting 350+ payment methods worldwide. Built on REST principles, the API is designed to be predictable and developer-friendly, with resource-oriented URLs, JSON-encoded requests and responses, and standard HTTP status codes.

Security

The Computop Paygate API is designed with maximum security while remaining easy to implement. All communication occurs over HTTPS (TLS 1.2 or higher), ensuring end-to-end encryption at the transport level. This prevents packet sniffing, replay attacks, and other vulnerabilities without requiring additional encryption of the data itself.

Test Before You Go Live

Use our test environment to test your integration without affecting live data. The root URL determines whether the request is for test or live integration.

Download OpenAPI description
index.json
index.yaml
Languages
Servers
Test server

https://test.computop-paygate.com/api/v2/

Production server

https://www.computop-paygate.com/api/v2/

Authentication

Securely authenticate API requests using Basic Auth or OAuth 2.0

The Computop Paygate API supports two authentication methods to ensure secure access to payment processing and management endpoints. Choose the approach that aligns with your integration needs:

Basic Authentication

Use your Merchant ID as the username and API Key as the password. Combine them in the format MerchantID:APIKey, encode the string using Base64, and include it in the Authorization header with the Basic prefix for direct access to endpoints.

OAuth 2.0

Generate a short-lived JSON Web token (JWT) by authenticating with your API key via the authorization/oauth/token endpoint.

Operations

Request OAuth Token

Request

Bodyapplication/x-www-form-urlencoded

Request for client authorization

grant_typestringrequired
Value"client_credentials"
client_idstringrequired

Client ID provided by Computop. This is your merchant ID

client_secretstringrequired

Client secret provided by Computop. This is your API key

curl -i -X POST \
  https://test.computop-paygate.com/authorization/oauth/token \
  -H 'Content-Type: application/x-www-form-urlencoded' \
  -d grant_type=client_credentials \
  -d client_id=string \
  -d client_secret=string

Responses

Successful operation

Bodyapplication/json
access_tokenstring
token_typestring
Value"bearer"
expires_innumber

Token expiry time in seconds

Response
application/json
{
  "access_token": "eyJhbGciOiJSUzI1NiIsImtpZCI6IkZGQzlEM0JEQzY2Mjc3MUYwNzYxRUJDRTkwOTMyMDMyQjdGOTQ1NTQiLCJ4NXQiOiJfOG5UdmNaaWR4OEhZZXZPa0pNZ01yZjVSVlEiLCJ0eXAiOiJhdCtqd3QifQ.eyJpc3MiOiJodHRwczovL2xvY2FsaG9zdDo3MTIxLyIsImV4cCI6MTc0MDQ3NTUwNCwiaWF0IjoxNzQwNDcxOTA0LCJqdGkiOiJiZjU3YmUwMi05YThiLTQxYjctYjNjNi02NzlmMTcxNDU2ZjAiLCJzdWIiOiJDVF9Mb2dlZWNvbV90ZXN0IiwibmFtZSI6IkNUX0xvZ2VlY29tX3Rlc3QiLCJtYXJrZXRwbGFjZUlkIjoiQ1RfTG9nZWVjb21fdGVzdF9NYXJrZXRwbGFjZSIsIm1hcmtldHBsYWNlQWN0aXZlIjpmYWxzZSwib2lfcHJzdCI6IkNUX0xvZ2VlY29tX3Rlc3QiLCJjbGllbnRfaWQiOiJDVF9Mb2dlZWNvbV90ZXN0Iiwib2lfdGtuX2lkIjoiMjEwMWUxNTgtNzY0NC00OGU4LWIzNmYtYmZhNzczNWJmYjAyIn0.Xgtb81-GBPGnQ2tSJKXIlA38koRqlVa2oLhT902t-ICocWYD4_35bTAiPfU2A4HWwQpg1PZTrdf4riSoA_v_5bWSM-rdHAb-Y7fNwQTYAUYDxkcrw9qc5JcjwBGlOgXGTzJR2xyPDTq2sO4qAxo00lhCVjhEQR47yqOFta9rkcCmg1i6T6BxF7ZO6tBECfo7NSJ0wgN7G5_Unmd5MgWuG8V5VdvDxhXa1p_sBQdmy6nBCRi2d2bh1BOrz_uT5U2zngVBPzZBXv046j7971JXZbR20JFpkqwrULCGR6fy78NvkrHNC4U8ZDHmbejBbObMGCb_8pWMnaLhIg0A1k2x0Q",
  "token_type": "Bearer",
  "expires_in": 3600
}

Payments

Create checkout session

This endpoint generates a URL for a hosted payment page where customers can securely select their preferred payment method and complete their transaction.

Create payment

This endpoint is used to initiate a payment for a specific payment method. You can choose between two integration types:

  • HOSTED: Returns a URL for a payment method-specific hosted form, where the customer is redirected to securely complete the payment.
  • DIRECT: Enables server-to-server communication, where you manage the payment UI and directly interacts with the API to process payments.

Note that not all payment methods support both HOSTED and DIRECT integration types. Some support only one of these options, while others support both. For detailed information about the supported integration types for each payment method, refer to the payment method-specific documentation in our product guide.

Confirm payment

This endpoint is used for payment methods that require a multi-step payment flow. It allows you to confirm a previously created payment instance (initiated via the Create Payment endpoint) to complete the transaction. This step is essential for certain payment methods to finalize the payment process.

Incremental authorization

This endpoint allows you to increase the authorized amount for an existing card transaction when the initial authorization is insufficient. The additional amount is appended to the original authorization, and the total authorized amount reflects both.

Reverse payment

This endpoint is used to reverse a payment that has not yet been captured, effectively canceling the authorization.

Capture payment

This endpoint is used to capture an existing authorized payment.

Refund payment

This endpoint is used to refund a captured payment.

Refund payment without reference

This endpoint is used to refund a payment without reference.

Retrieve payment details by Payment ID

This endpoint is used to retrieve payment details with the Payment ID (payId)

Retrieve payment details by Transaction ID

This endpoint is used to retrieve payment details with the Transaction ID (transId)

Update payment details

This endpoint is used to update payment details

Create payment link

This endpoint allows you to generate a payment link that can be shared with customers via email, SMS, or other channels. When customers click the link, they are redirected to a hosted payment page where they can select their preferred payment method and complete the transaction.

Operations