# Overview This section consists of use case tutorials for various scenarios of Firewall for AI. The tutorials explained in this section are as follows. * [LangChain Prompt Sanitization](/developer-api/nightfall-use-cases/gen_ai_content_filtering.md) * [Deploy a File Scanner for Sensitive Data in 40 Lines of Code](/developer-api/nightfall-use-cases/file_scanner.md) * [Redacting Sensitive Data in 4 Lines of Code](/developer-api/nightfall-use-cases/redact.md) * [Detecting Sensitive Data in SMS Automations](/developer-api/nightfall-use-cases/detect.md) * [Building Endpoint DLP to Detect PII on Your Machine in Real-Time](/developer-api/nightfall-use-cases/endpoint_dlp.md) --- # 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://help.nightfall.ai/developer-api/nightfall-use-cases/overview.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.