> ## 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. # PrivateEndpointSettingsReasoning ## Example Usage ```typescript theme={null} import { PrivateEndpointSettingsReasoning } from "@openrouter/sdk/models"; let value: PrivateEndpointSettingsReasoning = { returnMechanism: "reasoning", supported: true, }; ``` ## Fields | Field | Type | Required | Description | Example | | - | - | - | - | - | | `returnMechanism` | [models.PrivateEndpointReasoningReturnMechanism](../models/privateendpointreasoningreturnmechanism.mdx) | ✔️ | Where the upstream puts reasoning tokens in its response: `reasoning` and `reasoning-content` are response fields, `content-string` is inline in the message, `none` returns no reasoning. `null` uses the provider default. | reasoning | | `supported` | *boolean* | ✔️ | Whether requests with `reasoning` route to this endpoint. | true |