# Configuring Rarity You can adjust the rarity of each layer image. This affects how many of the layers will appear. The default values for rarity are based on fixed ratios. However you can manually enter a fixed number of times you would like a layer to appear in the collection. {% hint style="info" %} **Empty Layers**: If you would like an image to be optional, please upload an empty transparent PNG image {% endhint %} --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.autominter.com/guides/legacy-guides/uploading-image-layers/configuring-rarity.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.