(adding-multimodal-plugin)=

# Adding a Multimodal Plugin

This document teaches you how to add a new modality to vLLM.

Each modality in vLLM is represented by a {class}`~vllm.multimodal.MultiModalPlugin` and registered to {data}`~vllm.multimodal.MULTIMODAL_REGISTRY`.
For vLLM to recognize a new modality type, you have to create a new plugin and then pass it to {meth}`~vllm.multimodal.MultiModalRegistry.register_plugin`.

The remainder of this document details how to define custom {class}`~vllm.multimodal.MultiModalPlugin` s.

```{note}
This article is a work in progress.
```

% TODO: Add more instructions on how to add new plugins once embeddings is in.