> For the complete documentation index, see [llms.txt](https://api3-ecosystem.gitbook.io/eco/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://api3-ecosystem.gitbook.io/eco/ecosystem-technical/developer-guides.md).

# Developer Guides

***API3 QRNG*** 

**How to access API3 QRNG**

* <https://www.youtube.com/watch?v=hnQ5Hd-EGbQ>

**Switching from Chainlink VRF to API3 QRNG**\
\
<https://medium.com/coinmonks/switching-from-chainlink-vrf-to-api3-qrng-b7939c5a4760>

**Using API3 QRNG in a dynamic NFT Mint**

* <https://www.youtube.com/watch?v=SZm1apO9Bqw>
* <https://medium.com/@ashar2shahid/building-quantumon-part-1-smart-contract-integration-with-qrng-714cfecf336c>

**Using API3 QRNG in a lottery dApp**

* <https://camron-h.medium.com/beginners-smart-contract-tutorial-part-1-e5fc3abdad1f>
* <https://camron-h.medium.com/beginners-smart-contract-tutorial-part-2-337cf6f48ac2>

\
**How to use ANU QRNG** **in Your Smart Contracts**

<https://betterprogramming.pub/a-guide-to-using-anus-quantum-random-number-generator-in-your-smart-contracts-21be5bed5aba>\
\
\
\
**How to deploy a REST API to Polygon Mumbai**&#x20;

* &#x20;<https://www.youtube.com/watch?v=ajtORrWjXPQ>
* <https://hackernoon.com/how-to-deloy-airnode-to-a-rest-api-on-polygon-mumbai>

**How to read the value of a Beacon**

* <https://www.youtube.com/watch?v=eixOGaTXI1U>

**Developer\_DAO QRNG guide**

* <https://blog.developerdao.com/create-a-random-generated-number-on-chain-using-api3-tools-for-free>

**Gelato QRNG automation**

* <https://medium.com/@javier_donoso/schedule-randomness-with-gelato-and-witnet-api3-chainlink-vrf-1ebc0aac37d>

**Using dAPIs on zkSync Era Testnet**

* <https://vanshwassan.medium.com/using-dapis-on-zksync-era-testnet-30f12efdd95f>


---

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