> ## 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. # MessagesOutputConfigTypeJSONSchema ## Example Usage ```typescript theme={null} import { MessagesOutputConfigTypeJSONSchema } from "@openrouter/sdk/models"; let value: MessagesOutputConfigTypeJSONSchema = "json_schema"; ``` ## Values ```typescript theme={null} "json_schema" ```