> For the complete documentation index, see [llms.txt](https://dev.simplepay.ai/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://dev.simplepay.ai/docs/api-documentation/apps/dev-mode.md).

# Dev Mode

Development mode will help you test all the steps, webhooks, APIs without spending $ on gas and waiting for real transactions to complete on blockchains.

To go to Dev Mode, create new App in [Console](https://console.simplepay.ai/) and switch Development Mode on:

<div><figure><img src="/files/3BGtdAzO2Qw3f9frJTzu" alt=""><figcaption></figcaption></figure> <figure><img src="/files/EtcG6tlpNDTNwjb2TGu7" alt=""><figcaption></figcaption></figure> <figure><img src="/files/DFdjgqa9dDoKg4x1FuPr" alt=""><figcaption></figcaption></figure> <figure><img src="/files/qAaaIkzh2l8bBhe1e5sR" alt=""><figcaption></figcaption></figure></div>

If dev mode is on, use these wallet addresses in the FROM fields:

**For Success statuses**

* "0x0000000000000000000000000000000000000000", // EVM chains: Ethereum, Binance Smart Chain
* "TSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS", // Tron
* "1SSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS", // Bitcoin
* "LSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS", // Litecoin

**For Rejected**

* "0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", // EVM chains: Ethereum, Binance Smart Chain
* "TRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRR", // Tron
* "1RRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRR", // Bitcoin
* "LRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRR", // Litecoin