# Access Rules Access rules can be used to define conditions of user access. Access rules can, for example, restrict a user to only be able to sign in from the local physical system, require a second-factor logon or call out to a single sign-in system for password validation. Access rules are plug-ins and the system can be extended with new rules on demand. --- # 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.tomorrowx.com/cap/product-reference/concepts-and-terminology/access-rules.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.