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

# Security

GreenNode AI Gateway ensures the protection of sensitive customer information such as authentication tokens and API keys through the following mechanisms:

1. **User Authentication Token**
   * Displayed only once at the time of creation.
   * Encrypted and securely stored.
   * Can be deleted at any time when no longer in use.
2. **API Key for Calling LLM Models**
   * Customer-provided API keys are encrypted before being stored.
   * Can be updated or deleted whenever needed.