# Plugins

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This is the official documentation of the `agent_ruby` Ruby agent.
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When customizing your Agent behavior, it is quite common to have to perform the same tasks on multiple Fields and Collections.

Plugins are the answer to that need, and you are strongly encouraged to use them everywhere you notice that your customization files could benefit from code factorization.

### Minimal example

#### Using plugins

Plugins are used by either importing a module, or installing the relevant package, and then calling the `use` method.

Depending on the plugin, options may be provided.

#### Writing plugins

The full documentation can be found in the ["Write your own plugin" section](/developer-guide-agents-ruby/agent-customization/plugins/custom.md).


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