> ## 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. # ShadowedBy What egress uses instead of this installation for a request to its account: an earlier installation on the same account, or a token pinned to the account. Null when this installation answers. ## Example Usage ```python theme={null} from openrouter.components import ShadowedBy # Open enum: unrecognized values are captured as UnrecognizedStr value: ShadowedBy = "installation" ``` ## Values This is an open enum. Unrecognized values will not fail type checks. * `"installation"` * `"token"`