# API Keys
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You can read a bit more about how to use our GrpahQL API and read some examples [here](https://docs.ergonode.com/v/graphql-api/).
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Once a key is created it cannot be modified, so if you need to edit it, simply delete the old one and create a new one.
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It's possible to create an API key without a segment to include all products.
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On the API Keys page, you’ll see an option to create a new API key. Click on it. You’ll be asked to provide some information for your new API key.
System > Settings > API Keys - window
Type a key name, it can be anything. There is an option to limit products that will be available with this key to one of the [segments](https://usermanual.ergonode.com/products/segments). By default for security reasons all keys are read-only, if you need a key with write access, tick the "Allow to write" checkbox.
Add API key window
To delete created key click on \[1] bin icon, or to see the actual key click on \[2] eye icon.
