# Collecting User Information for Credit Cards ## Authentication and Account Setup A representative from Engine by MoneyLion will set up an account and provide an authorization token to access the Engine API. * To integrate with the Credit Cards API, an authorization token is required to authenticate requests to the Engine API. Ensure the token is included in the request headers; otherwise, the API will return an error. * Test authorization tokens and production authorization tokens are separate. Requests made with a test token will not be reflected in performance reporting or payable events. Be sure to switch to the production token once testing is complete. For more information, see the official API documentation: --- # 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://even-financial.gitbook.io/developer-center/native-api-integrations/credit-cards-marketplace/collecting-user-information-for-credit-cards.md?ask= ``` 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.