> ## 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. # GrantType Must be `urn:ietf:params:oauth:grant-type:token-exchange`. ## Example Usage ```go theme={null} import ( "github.com/OpenRouterTeam/go-sdk/models/components" ) value := components.GrantTypeUrnIetfParamsOauthGrantTypeTokenExchange ``` ## Values | Name | Value | | --------------------------------------------------- | ----------------------------------------------- | | `GrantTypeUrnIetfParamsOauthGrantTypeTokenExchange` | urn:ietf:params:oauth:grant-type:token-exchange |