> ## 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. # PromptInjectionScanScope Which message roles to scan for prompt injection. Only applies to the regex-prompt-injection builtin. Defaults to all\_messages. ## Example Usage ```python theme={null} from openrouter.components import PromptInjectionScanScope # Open enum: unrecognized values are captured as UnrecognizedStr value: PromptInjectionScanScope = "user_only" ``` ## Values This is an open enum. Unrecognized values will not fail type checks. * `"user_only"` * `"all_messages"`