> ## Documentation Index
> Fetch the complete documentation index at: https://developer.onecodex.com/llms.txt
> Use this file to discover all available pages before exploring further.

# The Metadata Resource

Metadata resources provide a means for adding structured metadata to your samples. The Metadata resource include a number of default fields, and can also be extended with arbitrary custom metadata. Permissions on metadata follow the Samples they describe – i.e., the Metadata resource for a public sample will be publicly accessible. Here is an example metadata entry:

![](https://mintcdn.com/onecodex/DiToQ9fYtYBO3lRU/images/api/metadata_edit_modal.png?fit=max\&auto=format\&n=DiToQ9fYtYBO3lRU\&q=85\&s=0d304ce5482f272b19bb81deb3f6b645)

The metadata editing modal on the One Codex web application. Note that the Project is actually a property on the Sample resource.

Metadata include the following **properties**:


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