> ## Documentation Index > Fetch the complete documentation index at: https://openrouter.ai/docs/llms.txt > Use this file to discover all available pages before exploring further. # ContentFilterBuiltinEntryInput A builtin content filter entry for create/update requests. Labels are system-assigned and cannot be set by the caller. ## Fields | Field | Type | Required | Description | Example | | ------------ | --------------------------------------------------------------------------------------------- | -------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | ---------------------- | | `action` | [components.ContentFilterBuiltinAction](../components/contentfilterbuiltinaction.mdx) | :heavy\_check\_mark: | Action taken when the builtin filter triggers | block | | ~~`label`~~ | *Optional\[str]* | :heavy\_minus\_sign: | : warning: \*\* DEPRECATED \*\*: This will be removed in a future release, please migrate away from it as soon as possible.

Deprecated: labels are system-assigned and cannot be set by the caller. Accepted for backward compatibility but silently ignored. | | | `scan_scope` | [Optional\[components.PromptInjectionScanScope\]](../components/promptinjectionscanscope.mdx) | :heavy\_minus\_sign: | Which message roles to scan for prompt injection. Only applies to the regex-prompt-injection builtin. Defaults to all\_messages. | user\_only | | `slug` | [components.ContentFilterBuiltinSlug](../components/contentfilterbuiltinslug.mdx) | :heavy\_check\_mark: | The builtin filter identifier | regex-prompt-injection |