> For the complete documentation index, see [llms.txt](https://support.cregis.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://support.cregis.com/4.-developer-and-payment-engine/waas.md).

# WaaS

Cregis offers a standardized API that allows enterprises to seamlessly integrate our wallet into their applications, ensuring a smooth user experience and efficient operations. With Wallet as a Service (WaaS), businesses can provide digital wallet services without the need to build or maintain their own wallet infrastructure, simplifying implementation and reducing development costs.

## 1. Generate address

<figure><img src="https://3263384427-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fg3NzJ0yGNKhTsgI2zNjK%2Fuploads%2FF3tgIwKjWKSp6R65a7q8%2Fimage.png?alt=media&amp;token=8d03f684-4e96-43d8-b304-e6c8d13bcdbd" alt=""><figcaption></figcaption></figure>

* Through the API, enterprises can generate sub-addresses which belong to the main address owned by the enterprises.
* These sub-addresses could be generated to their users for crypto payment receive.
* Cregis provides a "collection" function for the enterprise to collect all sub-address assets to the specified wallet address, which is convenient for user management and use. The successfully collected funds and miner fees can be queried in the transaction records of the wallet.

## 2. Crypto Withdrawal or Payment (WaaS)

<figure><img src="https://3263384427-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fg3NzJ0yGNKhTsgI2zNjK%2Fuploads%2FsEi9wY2mNLNZag0vmcl3%2Fimage.png?alt=media&amp;token=915add45-1ffc-49fb-9e90-766a2e8d643d" alt=""><figcaption></figcaption></figure>

* For corporate transfers or withdrawals, it is required to operate from the Cregis enterprise wallet.
* To ensure request security, it is necessary to request the IP address of the Cregis API server and add it to the IP whitelist. The Cregis API only grants access to IP addresses in the whitelist.


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