# Authorization

To interact with Link2Pay’s APIs, every request must include your merchant credentials. This ensures that only verified merchants can initiate and manage payment requests.Required Parameters:

* merchantId – Your unique merchant account identifier.
* appId – Identifies the specific application or integration making the request.
* apiKey – A secure API key used to authenticate your request.

All API calls must be made over HTTPS to prevent interception and ensure data integrity. We recommend rotating API keys periodically and using environment variables to store them securely.


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.lynk2pay.com/lynk2pay-services/core-features/authorization.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.