> For the complete documentation index, see [llms.txt](https://docs.abtasty.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.abtasty.com/server-side/command-line-interface/quickstart/quick-start-feature-experimentation.md).
# Feature experimentation
## 1 - Retrieve your credentials
{% hint style="warning" %}
🚧 Access to your credentials
This feature and the access to the [generation of credentials](https://docs.developers.flagship.io/reference/authorization) is related to the [Remote Control API](https://docs.developers.flagship.io/reference/getting-started), it's still in Early Adoption phase, if you want to try it and have any questions, feel free to ask [**product.feedback@abtasty.com**](mailto:product.feedback@abtasty.com)
{% endhint %}
Create credentials
## 2 - Use [auth login](/server-side/command-line-interface/ab-tasty-cli-reference-v1xx/feature-experimentation/feature-experimentation-authentication.md) command
Once you retrieve your credentials, use the `abtasty-cli feat-exp auth login`cmd to create your auth file. You can create an auth file in two ways:
### insert credentials
```shell
abtasty-cli feat-exp auth login --username USERNAME -i CLIENT_ID -s CLIENT_SECRET -a ACCOUNT_ID
```
### insert a file
The file inserted must have the same schema as the example below to extract the credentials.
```yaml
username: username
account_id: ai
account_environment_id: aei
client_id: ci
client_secret: cs
```
```shell
abtasty-cli feat-exp auth login -p PATH_FILE
```
The `abtasty-cli feat-exp auth login` command creates a file with the username name as fileName and stores it in $HOME/.abtasty/credentials/fe/USERNAME.yaml and writes the value of the flags as key-value pairs then you can use the use command to generate the access token to manage your flagship resources automatically.
{% hint style="info" %}
📘 List configurations
You can use the command`abtasty-cli feat-exp auth list`to check your auth files
{% endhint %}
## Required for account environment-related resources - Use [account-environment use](/server-side/command-line-interface/ab-tasty-cli-reference-v1xx/feature-experimentation/feature-experimentation-account-environment.md) command
The use command lets you select the configuration you want to manage
```shell
abtasty-cli feat-exp account-environment use -i ACCOUNT_ENVIRONMENT_ID
```
The command generates a token that expires after 24 hours and automatically refreshes.
{% hint style="success" %}
👍 CLI usage
After selecting an auth file, you are good to go !
{% endhint %}
---
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