> ## Documentation Index
> Fetch the complete documentation index at: https://docs.httpmon.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# Filtering

> Quick and advanced filter expressions for flows

httpmon provides both quick substring filtering and advanced filter expressions to narrow down captured flows.

<Frame>
  <img src="https://mintcdn.com/pragmaticoslu/GKMvH6x25ZdEJHbo/images/screenshots/filtering.png?fit=max&auto=format&n=GKMvH6x25ZdEJHbo&q=85&s=49f963756257763fafccc30991a24a40" alt="httpmon filtering" width="5877" height="1904" data-path="images/screenshots/filtering.png" />
</Frame>

## Quick filter

Press `/` in the flow list to focus the filter bar. Type any text to perform a case-insensitive substring match against the host and path of each flow.

## Advanced filter expressions

For more precise filtering, use structured expressions. Separate multiple terms with spaces to combine them with AND logic.

| Expression   | Description                       |
| ------------ | --------------------------------- |
| `s:200`      | Exact status code                 |
| `s:2xx`      | Status code range (2xx, 4xx, 5xx) |
| `m:GET`      | HTTP method                       |
| `m:POST`     | HTTP method                       |
| `ct:json`    | Content-type contains substring   |
| `ct:html`    | Content-type contains substring   |
| `re:pattern` | Regex match on host+path          |
| `!term`      | Negate any filter term            |

## Examples

Filter all successful GET requests:

```
s:2xx m:GET
```

Filter JSON responses, excluding client errors:

```
ct:json !s:4xx
```

Filter URLs matching a regex pattern:

```
re:api/v[23]
```

## Learn more

See the [filter syntax reference](/reference/filter-syntax) for the full list of operators and pattern rules.