# Creating an UbiFunction
You can create and develop UbiFunctions in two ways:
1. **Web UI** — Create and edit functions directly in your Ubidots account, as described below.
2. **CLI** — Create, test, and deploy functions locally with full runtime replication. Developing locally unlocks the power of your preferred IDE and AI-powered tools like Claude Code.
```bash
ubidots functions new --name my-function --runtime python3.11:base
ubidots functions start --methods POST
```
{% hint style="info" %}
See the full [CLI reference for UbiFunctions](https://dev.ubidots.com/sdks/cli/ubifunctions) for local development workflows including push, pull, and live testing.
{% endhint %}
## Using the Web UI
1. In your Ubidots account, go to the "**Devices**" tab and select "**Functions**".
2. Click the "+" icon to create your first UbiFunction:
3. Give the function a name.
{% hint style="warning" %}
The name of your function will become part of its URL. If you rename the function, the URL will keep the same.
{% endhint %}
Type the name for this ubifunction in the corresponding field:
4. Scroll down to the *Runtime* option and select the runtime that you require:
5. scroll down to the *HTTP Method* section and select the HTTP method that this function will allow:
6. Other configuration options:
* **Token**: select a token from your account to use in your function code.
* **Environmental variables**: select one or more environmental variables from the [Global Properties](https://help.ubidots.com/en/articles/9265555-ubifunctions-using-global-properties) of your account to use in the function code.
* **Max. execution time**: the maximum time your function takes to execute all the code.
* **Time-based trigger**: create a cron UbiFunction based on a time interval or a Crontab expression.
* **Raw function**: HTTP headers and URL paths will be passed to the function. "Content-Type" can be different than "application/json". Custom response codes can be returned from the function.
* **CORS Policy**: Enables calling this function from web browser's URLs different than parse.ubidots.com.
7. Scroll down to the bottom of the page and hit the *SAVE* button to save these settings.
---
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