{"info":{"_postman_id":"5423fb57-e2cd-4899-9b9d-074940527af7","name":"API Documentation","description":"

The M4HR API is a secure and reliable solution for processing credit card payments. Designed for seamless integration, it enables businesses to accept payments efficiently while ensuring compliance with industry security standards, such as PCI DSS. This API supports a variety of credit card types, including Visa, Mastercard, American Express, and more.

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Description

The https://api.m4hr.xyz/getToken endpoint is used to authenticate a user and obtain an access token for interacting with the Payment API. This endpoint accepts a POST request with a JSON payload containing the user's credentials. Upon successful authentication, it returns a token that can be used for subsequent API requests.

HTTP Method

POST

URL

https://api.m4hr.xyz/getToken

Request Payload

The request must include a JSON object with the following fields:

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n

Field	Type	Description	Required
`username`	String	The username for authentication.	Yes
`password`	String	The password for authentication.	Yes

Example Payload

{\n    \"username\": \"sbxapiuser\",\n    \"password\": \"stl_T5K=D8l!\"\n}\n\n

Response

Success (200 OK): Returns a JSON object containing the access token and its expiration details.
\n
Error (401 Unauthorized): Returned if the provided credentials are invalid.
\n
Error (400 Bad Request): Returned if the request payload is malformed or missing required fields.
\n
Error (422 Unprocessable Entity): Returned if the request payload data is invalid.
\n

Notes

The endpoint is secured with HTTPS to ensure data privacy.
\n
Tokens issued by this endpoint must be included in the Authorization header of subsequent API requests.
\n
Ensure credentials are stored securely and not exposed in client-side code.
\n

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Description

The https://api.m4hr.xyz/charge endpoint processes a credit card payment transaction. This endpoint accepts a POST request with a JSON payload containing payment details, customer information, and credit card data. It requires an Authorization Bearer token in the request header for authentication. Upon successful processing, it returns a response with transaction details, including status and authorization code.

HTTP Method

POST

URL

https://api.m4hr.xyz/charge

Headers

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n

Header	Value	Description	Required
`Authorization`	`Bearer`	The access token obtained from the `/getToken` endpoint.	Yes

Request Payload

The request must include a JSON object with a data field containing the following properties:

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n

Field	Type	Description	Required
`publicKey`	String	The public key provided by the onboarding team.	Yes
`amount`	String	The transaction amount (e.g., \"2.99\").	Yes
`currency`	String	The currency code for the transaction (e.g., \"USD\").	Yes
`reference`	String	A unique reference ID for the transaction.	Yes
`firstName`	String	The cardholder's first name.	Yes
`lastName`	String	The cardholder's last name.	Yes
`email`	String	The cardholder's email address.	Yes
`phone`	String	The cardholder's phone number (e.g., \"+5068816453\").	Yes
`address`	String	The cardholder's billing address.	Yes
`postalCode`	String	The postal code for the billing address.	Yes
`city`	String	The city for the billing address.	Yes
`state`	String	The state or region code for the billing address (e.g., \"WA\").	Yes
`country`	String	The country code for the billing address (e.g., \"US\").	Yes
`ip`	String	The IP address of the client initiating the transaction.	Yes
`cardHolderName`	String	The full name on the credit card.	Yes
`cardNumber`	Number	The credit card number (e.g., 4242424242424242).	Yes
`cardCVV`	String	The card's CVV code (e.g., \"123\").	Yes
`cardExpiryMonth`	String	The card's expiry month (e.g., \"12\").	Yes
`cardExpiryYear`	String	The card's expiry year (e.g., \"2099\").	Yes
`notificationUrl`	String	The URL to receive asynchronous transaction notifications.	Yes
`callbackUrl`	String	The URL to redirect the user after transaction processing.	Yes

Example Payload

{\n    \"data\": {\n        \"publicKey\": \"stoyihuzas8afe\",\n        \"amount\": \"2.99\",\n        \"currency\": \"USD\",\n        \"reference\": \"1254412661\",\n        \"firstName\": \"Fernando\",\n        \"lastName\": \"Sequeira\",\n        \"email\": \"fernando.sequeira@gmail.com\",\n        \"phone\": \"+5068816453\",\n        \"address\": \"742 Evergreen Terrace\",\n        \"postalCode\": \"11101\",\n        \"city\": \"Coroando\",\n        \"state\": \"SJ\",\n        \"country\": \"CR\",\n        \"ip\": \"172.0.0.99\",\n        \"cardHolderName\": \"Fernando Sequeira\",\n        \"cardNumber\": 4242424242424242,\n        \"cardCVV\": \"123\",\n        \"cardExpiryMonth\": \"12\",\n        \"cardExpiryYear\": \"2099\",\n        \"notificationUrl\": \"http://192.168.1.17/woocomerce-plugins/bog-3d/notify/index.php\",\n        \"callbackUrl\": \"http://sandbox.local/redirectback.php\"\n    }\n}\n\n

Response

The response is a JSON object containing transaction details under the result field.

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n

Field	Type	Description
`id`	String	The unique transaction ID (e.g., \"F4FA7BC7-36DD-4082-A1F8-12E929EBDFBA\").
`reference`	String	The transaction reference ID provided in the request.
`currency`	String	The currency code of the transaction.
`amount`	String	The transaction amount.
`authCode`	String	The authorization code for the transaction (e.g., \"111111\").
`status`	String	The transaction status (e.g., \"Approved\").
`redirectUrl`	String	The URL for redirection, if applicable (e.g., \"No URL\").
`descriptor`	String	Also known as a billing descriptor or merchant descriptor) is the text that appears on a customer’s credit or debit card statement to identify the source of a transaction (e.g., \"sandbox descriptor\").
`timestamp`	String	The timestamp of the transaction (e.g., \"2025-08-05T05:54:55.676000Z\").
`error`	Object	Error details, including `code` and `message` (e.g., \"000\", \"Approved transaction\").

Example Response

{\n    \"result\": {\n        \"id\": \"F4FA7BC7-36DD-4082-A1F8-12E929EBDFBA\",\n        \"reference\": \"1254412661\",\n        \"currency\": \"USD\",\n        \"amount\": \"22.99\",\n        \"authCode\": \"111111\",\n        \"status\": \"Approved\",\n        \"redirectUrl\": \"No URL\",\n        \"descriptor\": \"sandbox descriptor\",\n        \"timestamp\": \"2025-08-05T05:54:55.676000Z\",\n        \"error\": {\n            \"code\": \"000\",\n            \"message\": \"Approved transaction\"\n        }\n    }\n}\n\n

Notes

The endpoint is secured with HTTPS to protect sensitive data, such as credit card information.
Ensure the publicKey is valid and obtained via the onboarding team.
The cardNumber and cardCVV must comply with PCI DSS standards and should not be stored after processing.
The notificationUrl and callbackUrl must be valid and accessible URLs for receiving notifications and redirecting users.
Possible status values include \"Approved\", \"Declined\", \"Failed\", or \"Pending\", depending on the transaction outcome.
Error codes and messages in the response provide additional context for failed transactions.

Hosted Payment Page Flow (HPP)

The Hosted Payment Page (HPP) allows merchants to redirect customers to a secure PCI-compliant checkout page.

This flow uses the same endpoint: https://api.m4hr.xyz/charge

When a charge request is created with callbackUrl and/or notificationUrl, the API will return a redirect URL where the customer can complete the payment using our hosted page.

Request Payload

{\n    \"data\": {\n        \"publicKey\": \"stoyihuzas8afe\",\n        \"amount\": \"3.99\",\n        \"currency\": \"USD\",\n        \"reference\": \"1254412661\",\n        \"firstName\": \"Fernando\",\n        \"lastName\": \"Sequiera\",\n        \"email\": \"fernando.sequeira@gmail.com\",\n        \"phone\": \"+555 88997766\",\n        \"address\": \"742 Evergreen Terrace\",\n        \"postalCode\": \"98052\",\n        \"city\": \"Springfield\",\n        \"state\": \"SJ\",\n        \"country\": \"CR\",\n        \"ip\": \"172.0.0.99\",\n        \"notificationUrl\": \"http://sandbox.local/webhook\", \n        \"callbackUrl\": \"http://sandbox.local/redirectback.php?hash=wlbotruchiprlstic49ev7brO8aciphlqox1d5t\"\n    }\n}\n\n

Response Example

{\n    \"result\": {\n        \"id\": \"ECA8038D-A064-449C-81CA-B4C1ED812D8C\",\n        \"reference\": \"1254412661\",\n        \"currency\": \"USD\",\n        \"amount\": \"3.99\",\n        \"authCode\": \"888888\",\n        \"status\": \"Redirect\",\n        \"redirectUrl\": \"https://api.m4hr.xyz/redirect/1111\",\n        \"descriptor\": \"Sandbox Redirect\",\n        \"timestamp\": \"2025-10-08T16:39:10.514000Z\",\n        \"error\": {\n            \"code\": \"800\",\n            \"message\": \"Redirect customer\"\n        }\n    }\n}\n\n

Flow Summary

Merchant sends a charge request to /charge with standard payment parameters.
API generates a payment session and returns checkoutUrl.
Customer is redirected to the Hosted Payment Page.
After payment:
- notificationUrl receives server-to-server webhook with transaction result.
- callbackUrl redirects the customer back to the merchant website.
\n

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You can retrieve the status and details of a transaction using the following endpoint:

GET https://api.m4hr.xyz/charge/{publicKey}/{transactionId}

Authorization is required using the Bearer token format.

\n","urlObject":{"protocol":"https","path":["charge","b848uprikUbinlcru9","A22C49B7-F6B7-4C1B-BD13-CC8102DC16C5"],"host":["api","m4hr","xyz"],"query":[],"variable":[]}},"response":[{"id":"1241a948-8ac9-43e9-8f80-021fae23c52b","name":"Transaction Found","originalRequest":{"method":"GET","header":[],"url":"https://api.m4hr.xyz/charge/b848uprikUbinlcru9/A22C49B7-F6B7-4C1B-BD13-CC8102DC16C5"},"status":"OK","code":200,"_postman_previewlanguage":"json","header":[{"key":"Date","value":"Tue, 09 Dec 2025 01:39:25 GMT"},{"key":"Content-Type","value":"application/json"},{"key":"Transfer-Encoding","value":"chunked"},{"key":"Connection","value":"keep-alive"},{"key":"Content-Encoding","value":"br"},{"key":"expires","value":"Thu, 19 Nov 1981 08:52:00 GMT"},{"key":"Cache-Control","value":"no-store, no-cache, must-revalidate"},{"key":"pragma","value":"no-cache"},{"key":"access-control-allow-origin","value":"*"},{"key":"access-control-allow-headers","value":"X-Requested-With, Content-Type, Accept, Origin, Authorization"},{"key":"access-control-allow-methods","value":"GET, POST, PUT, DELETE, OPTIONS"},{"key":"x-do-app-origin","value":"df1378ef-8f63-40ba-a33a-6987b2badebc"},{"key":"x-do-orig-status","value":"200"},{"key":"cf-cache-status","value":"MISS"},{"key":"Vary","value":"Accept-Encoding"},{"key":"Server","value":"cloudflare"},{"key":"CF-RAY","value":"9ab0c9df482488f6-MIA"},{"key":"alt-svc","value":"h3=\":443\"; ma=86400"}],"cookie":[],"responseTime":null,"body":"{\n \"result\": {\n \"id\": \"A22C49B7-F6B7-4C1B-BD13-CC8102DC16C4\",\n \"reference\": \"1254412661\",\n \"currency\": \"USD\",\n \"amount\": \"10.99\",\n \"authCode\": \"000000\",\n \"status\": \"Approved\",\n \"redirectUrl\": \"No URL\",\n \"descriptor\": \"\",\n \"timestamp\": \"2025-12-08T20:16:15.251000Z\",\n \"error\": {\n \"code\": \"000\",\n \"message\": \"Approved transaction\"\n }\n }\n}"},{"id":"4a89dabe-22e5-43ee-8e25-7289608d2414","name":"Transaction Not Found","originalRequest":{"method":"GET","header":[],"url":"https://api.m4hr.xyz/charge/b848uprikUbinlcru9/A22C49B7-F6B7-4C1B-BD13-CC8102DC16C5"},"status":"OK","code":200,"_postman_previewlanguage":"json","header":[{"key":"Date","value":"Tue, 09 Dec 2025 03:43:23 GMT"},{"key":"Content-Type","value":"application/json"},{"key":"Transfer-Encoding","value":"chunked"},{"key":"Connection","value":"keep-alive"},{"key":"Content-Encoding","value":"br"},{"key":"expires","value":"Thu, 19 Nov 1981 08:52:00 GMT"},{"key":"Cache-Control","value":"no-store, no-cache, must-revalidate"},{"key":"pragma","value":"no-cache"},{"key":"access-control-allow-origin","value":"*"},{"key":"access-control-allow-headers","value":"X-Requested-With, Content-Type, Accept, Origin, Authorization"},{"key":"access-control-allow-methods","value":"GET, POST, PUT, DELETE, OPTIONS"},{"key":"x-do-app-origin","value":"df1378ef-8f63-40ba-a33a-6987b2badebc"},{"key":"x-do-orig-status","value":"200"},{"key":"cf-cache-status","value":"MISS"},{"key":"Vary","value":"Accept-Encoding"},{"key":"Server","value":"cloudflare"},{"key":"CF-RAY","value":"9ab17f7c4f770da2-TPA"},{"key":"alt-svc","value":"h3=\":443\"; ma=86400"}],"cookie":[],"responseTime":null,"body":"{\n \"result\": {\n \"error\": {\n \"code\": \"011\",\n \"message\": \"Transaction not found\"\n }\n }\n}"}],"_postman_id":"d033aa3c-9a74-409f-a330-a56081b24c45"}],"id":"64f4c3ef-d8aa-4343-b888-d32e3df85010","_postman_id":"64f4c3ef-d8aa-4343-b888-d32e3df85010","description":""},{"name":"Testing (Sandbox Environment)","item":[],"id":"d99475bf-480b-43ff-910a-54e4cceb7807","description":"

You can simulate payment results in test mode using the following card numbers. No real charges will be made during testing.

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n

Card Number	Result
4242 4242 4242 4242	✅ Approved transaction
4242 4242 4242 4341	❌ Declined transaction

Note:

Use any valid future expiration date.
\n
Any 3-digit CVV can be used (e.g., 123).
\n
Amount and currency can be set freely for testing.
\n

\n","_postman_id":"d99475bf-480b-43ff-910a-54e4cceb7807"}]}