Filters

Filters reduce noise without changing the data stored in History. noxen has two independent filter sets:

• Intercept filters decide whether a captured intent stops in the Intercept tab.
• History filters decide which stored rows are displayed in the History tab.

Filters can be managed from the UI or from the command input. The examples below use commands because they are compact and easy to copy.

Rule types

Type	Meaning
ignore	Hide or auto-forward matching intents
focus	Show only matching intents

Focus rules take precedence. If at least one focus rule is active, an intent must match a focus rule to be shown. Ignore rules do not matter in that case.

Rule format

Each rule is made of one or more key=value pairs:

/filter add ignore class=*ContextThemeWrapper
/filter add focus method=sendBroadcast
/filter add ignore class=com.example.MainActivity method=getIntent

Multiple key/value pairs in the same rule are AND-ed together.

Valid keys

Key	Matches
class	Hooked Java class
method	Hooked Java method
action	Intent action
data	Intent data URI
flags	Intent flags
category	Any category in the intent
component	Target component

Values use glob matching through fnmatch, so * is supported:

/filter add ignore class=*ContextThemeWrapper
/filter add focus action=android.intent.action.*

Presence checks

Use set and unset to match whether a field exists:

/filter add focus data=set
/filter add ignore action=unset

For component, these aliases are also supported:

explicit = set
implicit = unset

Examples:

/filter add focus component=explicit
/filter add focus component=implicit

Intercept filter behavior

When an Intercept filter hides an intent, the tool auto-forwards it. The intent is still stored in History before the filter decision is applied.

This design preserves the audit trail while keeping the active Intercept tab focused.

History filter behavior

History filters never affect the target app. They only change the rows shown in the UI and the result of /export filtered entries.

Filter count indicator

The footer bar on the Intercept and History tabs shows the number of active filters on the right side. The count reflects the filter set of the current tab:

• Filters: 3 — three enabled filters
• Filters: 2/3 — two of three filters are enabled (one is toggled off)

The indicator is hidden on other tabs.

Saving filters

Use:

/save intercept filters
/save history filters

The exported format is text-based and uses one rule per line.

Common filter recipes

Ignore framework wrapper noise:

/filter add ignore class=*ContextThemeWrapper

Focus on broadcasts:

/filter add focus method=sendBroadcast

Focus on intents with a data URI:

/filter add focus data=set

Focus on explicit intents:

/filter add focus component=explicit

Hide intents without a component:

/filter add ignore component=implicit