> For the complete documentation index, see [llms.txt](https://sp8de-docs.gitbook.io/s-p-8-d-e-or-white-paper/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://sp8de-docs.gitbook.io/s-p-8-d-e-or-white-paper/technical-quantrapy-manual/random-purchase.md).
# Random purchase
Please install quantrapy with steps below before purchase if you have not installed the [generator](/s-p-8-d-e-or-white-paper/technical-quantra-manual/generator-start-manual/install-and-configure-generator.md) before.
**IMPORTANT only for Testnet:** QRNG tokens are required to buy randoms. They can be obtained via [faucet service](/s-p-8-d-e-or-white-paper/technical-quantra-manual/generator-start-manual/creating-accounts-testnet-and-faucet-service.md#faucet-service)
1. To install the application, download the following script in command:\
`curl https://raw.githubusercontent.com/quantum-sp8de/quantra-installer/master/install_qrandom.sh -o install_qrandom.sh`
2. After the download is completed, you must issue the rights to execute the script \
`chmod 777 install_qrandom.sh`
3. After setting the rights, you can call the script \
`sudo ./install_qrandom.sh -r user`
4. After installation you can start buying random
Save your private key to a text file that will be used by quantrapy later
```bash
cd ~
echo "Private key: " > user_pk.key
```
After saving the key, to purchase a random item you need to run the command:
```bash
quantrapy --url random -c quant.random -t quant.token buyrandom -k ~/user_pk.key
```
Example result:
If you are a validator node in the sp8de network, you can also purchase random by running 2 commands through cleos:
```bash
cleos -u push action quant.token transfer '["", "quant.random", "50.00 QRNG", "buy random"]' -p
cleos -u push action encodingctrt encdecval '["", "quant.random"]' -p
```
Example result:
