> For the complete documentation index, see [llms.txt](https://xdocs.ngd.network/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://xdocs.ngd.network/integrations/oracles.md).

# Oracles

Oracles are systems that enable smart contracts to access external data or events from outside the blockchain, such as web APIs, price feeds, or real-world information.

Check the available oracles below:

* [Supra](/integrations/oracles/supra.md)
* [Neo Oracle Gateway](/integrations/oracles/neo-oracle-gateway.md)