# Gripper Component

Configuration attribute reference for built-in gripper models.
> Source: https://docs.viam.com/reference/components/gripper/


This section documents the configuration attributes for each built-in gripper model.
Use these pages when you are writing a JSON configuration, debugging a config validation error, or looking up the default for a specific attribute.

- For how to add and configure a gripper component on your machine, see [Gripper](/hardware/common-components/add-a-gripper/).
- For the methods you call on a gripper in code, see the [Gripper API reference](/reference/apis/components/gripper/).
- For gripper models outside the built-in set, search for `gripper` in the [Viam registry](https://app.viam.com/registry). Each registry module's configuration is documented in its own README on its registry page.

## Built-in models

The following gripper models ship with `viam-server`:

| Model           | Description                                          |
| --------------- | ---------------------------------------------------- |
| [`fake`](/reference/components/gripper/fake/) | A model used for testing, with no physical hardware. |