# Lex Developer Account This document demonstrates how you can publish a custom app to Amazon Lex platform For this, make sure you [Sign up for AWS Account](https://signin.aws.amazon.com/signin?redirect_uri=https%3A%2F%2Fus-east-2.console.aws.amazon.com%2Fconsole%2Fhome%3Fregion%3Dus-east-2%26state%3DhashArgs%2523%26isauthcode%3Dtrue\&client_id=arn%3Aaws%3Aiam%3A%3A015428540659%3Auser%2Fhomepage\&forceMobileApp=0\&code_challenge=9nNXzyrNIGZEa88E12gdwP_z_GcXjUlexn0VjUc6Z_s\&code_challenge_method=SHA-256). It is advised that you use same E-Mail for registration across all the third-party registrations. --- # 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.ixhello.com/ixhc/general/use-cases/contact-finder-with-salesforce/pre-requisites/lex-developer-account.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.