# Advanced functions: best practices and use cases

### Best practices for using functions

Following these best practices will help you create effective and reliable functions:

1. **Clear, concise names**: choose names that immediately describe the function's purpose; for example, "get\_weather" is clearer than "external\_service";
2. **Detailed descriptions**: provide a complete description explaining what the function does and when to use it; this helps both the AI and other developers understand its purpose;
3. **Well-defined parameters**: clearly define the required parameters and provide a complete description to guide the generative AI;
4. **Test, test, test**: before putting a function into production, test it in various scenarios.

### Common use cases

Functions in AIsuru can be used in many creative ways. Here are some common use cases to inspire you:

* [**Connecting to a website**](/en/advanced-features/integrations/functions/advanced-functions/best-practices/use-case-automatic-update-agent-always-connected.md): retrieve real-time information from external sources, like weather forecasts, exchange rates, or breaking news;
* **CRM integration**: let the AI access and update customer data in your CRM without ever leaving the chat;
* **Email integration**: receive an email with the user's details when they show interest in your services;
* **Availability checking**: check product availability in a warehouse or hotel room availability.


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