> For the complete documentation index, see [llms.txt](https://academy.gooey.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://academy.gooey.ai/ai-for-impact/module-9/how-to-use-functions.md).
# How to use Functions?
### **Step 1**
Head over to the [Functions workflow](https://gooey.ai/functions/)
### **Step 2**
Create your PROMPT Function:
* create a basic fetch call for the weather of any location
* create a serper
**You can find more** [**examples here**](https://gooey.ai/functions/examples)
#### A basic Weather API call ([link here](https://gooey.ai/functions/current-weather-rxmquy60p1vq/))
```javascript
async ({ lat, long }) => {
// Use Open-Meteo's public API for fetching weather data
let url = `https://api.open-meteo.com/v1/forecast?latitude=${lat}&longitude=${long}¤t_weather=true`;
let response = await fetch(url);
let data = await response.json();
return { weather: data.current_weather };
};
```
#### An API call for Serper - a service for google search ([link here](https://gooey.ai/functions/google-search-without-api-key-tey6zrx2vzvm/))
```javascript
async ({ query }) => {
var myHeaders = new Headers();
myHeaders.append("X-API-KEY", "your API key");
myHeaders.append("Content-Type", "application/json");
var raw = JSON.stringify({
"q": query
});
var requestOptions = {
method: 'POST',
headers: myHeaders,
body: raw,
redirect: 'follow'
};
let ret = await fetch("https://google.serper.dev/search", requestOptions);
return { search_results: await ret.json() };
};
```
### **Step 3**
Hit Submit, if your code is working fine you will get your outputs on the right side. Use the “Save as New” button and update the run name.
### **Step 4**
Now head over to the Gooey workflow where you want to add the saved functions.
Head over to the example below:
{% embed url="" %}
Check the Functions option, and choose “PROMPT” from the dropdown and add your Saved example. And then hit "SUBMIT!
*You can check your Functions output in the Workflow at the end of the page in "Details" section.*
---
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