# API documentations - [Zapier Intergation](https://help.murlist.com/api-documentations/zapier-intergation.md) - [API Authentication](https://help.murlist.com/api-documentations/api-authentication.md): How to authenticate all API requests - [Email Validation API](https://help.murlist.com/api-documentations/email-validation-api.md): Validate email using the API - [Campaign API](https://help.murlist.com/api-documentations/campaign-api.md) - [List all campaigns](https://help.murlist.com/api-documentations/campaign-api/list-all-campaigns.md): How to list all campaigns on a workspace - [Add prospect to campaign](https://help.murlist.com/api-documentations/campaign-api/add-prospect-to-campaign.md): Add new prospect to an existing campaign --- # 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.murlist.com/api-documentations.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.