# Introduction Check Sheet is a Google Sheets app that can send notifications when certain conditions in your spreadsheet are met. You can use it for almost anything but a few examples are: * Email a colleague when a task is assigned to them * Post in a team Slack channel when a sales target is hit * Send an alert to a Google Chat space when stock levels are low * Email a client to remind them a payment is due tomorrow * Update a Microsoft Teams channel when a form submission is received * Email yourself when a stock price drops below a certain price Get started by [installing it for free](https://documentation.checksheet.app/installing) --- # 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://documentation.checksheet.app/readme.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.