# License for `BrazilDataAPI`

This package, `BrazilDataAPI`, is licensed under the **GNU General Public License Version 3 (GPL-3)**.

You are free to:

- Use, modify, and distribute the package, as long as any modifications or derived works also comply with the GPL-3.

- Distribute copies of this package with attribution, keeping this license intact.

## License Text

The full text of the GNU General Public License Version 3 (GPL-3) can be found [here](https://www.gnu.org/licenses/gpl-3.0.txt).

## Note on BrazilDataAPI 

The `BrazilDataAPI` package depends on three public RESTful APIs for accessing Brazilian data and global data related to Brazil:

1. **BrasilAPI**

A community-driven open API that provides programmatic access to publicly available data in Brazil, such as postal codes (CEP), banks, company registrations, holidays, and more.
The project was created to offer modern, low-latency endpoints using edge caching via Vercel Smart CDN, enabling fast access to data even when the original sources are slow or lack features like CORS. It aims to make useful public information more accessible in a modern and reliable way.
- **Official site**: [https://brasilapi.com.br](https://brasilapi.com.br)  
- **License**: MIT  
- **Terms of Service**: The API is publicly accessible, does not require authentication, and is intended for experimental, educational, and analytical purposes.

2. **World Bank Open Data API**

The **World Bank Open Data API** is a RESTful web service that provides access to a vast collection of international development indicators. It allows for real-time retrieval of economic, social, and environmental data, including metrics such as GDP, population, education, and poverty levels.
This API is publicly accessible, requires **no authentication**, and returns results in either **JSON** or **XML** format. It supports filtering by country, indicator code, and year. It is widely used in data science, research, and educational contexts.
In the `BrazilDataAPI` package, the API is used to **dynamically retrieve and display real-time indicators for Brazil**. 
Data is accessed live via HTTP requests to the API and shown directly in the R console. **No data is stored or redistributed** by this package.
- **API documentation**: [https://datahelpdesk.worldbank.org/knowledgebase/articles/889392](https://datahelpdesk.worldbank.org/knowledgebase/articles/889392)
- **License**: [Creative Commons Attribution 4.0 International (CC BY 4.0)](https://creativecommons.org/licenses/by/4.0/)
- **Attribution**:
Source: The World Bank – Open Data licensed under [CC BY 4.0](https://creativecommons.org/licenses/by/4.0/).

3. **API: Nager.Date**

- Website: [https://date.nager.at/Api](https://date.nager.at/Api)
- License: MIT License
- Notes: The API and its source code are licensed under the MIT License. No authentication is required for the public API.
Offline or commercial usage (e.g., via Docker or NuGet packages) may be subject to separate licensing, but this does not affect the MIT licensing of the open source API.
As per the maintainers of these APIs, **no attribution is required** for using or distributing the data.  
However, we recommend reviewing the official documentation and usage terms on their respective websites to ensure proper understanding and responsible use.

## Note

The `BrazilDataAPI` package, including all its data files (.rda) and code files, is licensed under the GNU General Public License, version 3 or later (GPL-3).

## Copyright Notice

© 2025-2026 Renzo Caceres Rossi. All rights reserved under the GPL-3.
