# AWS Cognito ## **What is Castle?** AWS Cognito is used by some platforms for secure authentication based on browser details. ## The Token When interacting with Cognito-protected endpoints, you must include a valid cognitoAsfData. This token is generated using various browser-specific factors as well as the mail you are trying to login with. An example website using it is Ticketmaster SG. --- # 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.takionapi.tech/cognito.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.