# Functions

| Function Formulas                                                                                                                                                                                                                                                  |
| ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| <p><strong>=API(</strong><a href="options"><strong>"options"</strong></a><strong>)</strong></p><p>Interact with any API</p><p><em>=API("<https://www.metaweather.com/api/location/search/?query=london","rawHeaders","/title,/location_type,/latt_long>")</em></p> |
| <p><strong>=cURL("cURL",</strong> <a href="options"><strong>"options"</strong></a><strong>)</strong></p><p>Interact with any API (<a href="https://curl.se/docs/manpage.html">cURL</a> format)</p>                                                                 |
| <p><strong>=TasksLeft("#")</strong></p><p>Number of <a href="https://sheet.link/#pricing">SheetLink tasks</a> left for the current sheet. </p><p><strong>"#"</strong> <strong>(optional)</strong> - any value here will return # tasks left only</p>               |

{% hint style="info" %}
Looking for SheetLink [pre-built app formulas](https://docs.sheet.link/formulas/apps)?
{% endhint %}

### Navigation <a href="#where-to" id="where-to"></a>

| Page                                                                                                                                          |
| --------------------------------------------------------------------------------------------------------------------------------------------- |
| <p>🚀 <a href="../quickstart"><strong>Quick Start</strong></a>​</p><p>60 second getting started guide.</p>                                    |
| <p><strong>​</strong><a href="../faq"><strong>❓ FAQ</strong></a><strong>​</strong></p><p>Answers to frequently asked SheetLink questions.</p> |
| <p>🔗 <a href="apps"><strong>Apps</strong></a><strong>​</strong></p><p>Explore the apps we've already built formulas for.</p>                 |
| <p>💪 <a href="options"><strong>"options"</strong></a><strong>​</strong></p><p>Control the request to and response from any application.</p>  |

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