# Messenger (legacy) {% hint style="warning" %} Due to new limitations by Meta, it is currently impossible to add a new Messenger channel from CSML Studio. {% endhint %} Messenger is one of the most popular chat platforms, with over 1.3B users worldwide. It is also one of the platforms that democratized the use of chatbots. It has a pretty broad set of APIs and allows for some very rich message templates, which gives it a nice user experience. If you are looking to build a publicly-accessible chatbot, Messenger is definitely a solution to look at! --- # 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.csml.dev/studio/channels/messenger.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.