# Filter

In production environments we want to have full control of the data we are collecting, filtering is an important feature that allows to **alter** the data before to deliver it to some destination.

![](/files/-LKKTpfgVbKXTUgbzgZp)

Filtering is implemented through plugins, so each filter available could be used to match, exclude or enrich your logs with some specific metadata.

Very similar to the input plugins, Filters runs in an instance context, which it have it own and independent configuration. Configuration keys are often called **properties**.

For more details about the Filters available and it usage, please refer to the [Filters](/manual/1.0/filter.md) section.


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# 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.fluentbit.io/manual/1.0/getting_started/filter.md?ask=<question>
```

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.