Request Options

This page documents the configuration options that callApi shares with the Fetch API. You can set them in createFetchClient or per request. Per-request values replace base values. This includes headers: to keep the base headers, pass a function, for example headers: ({ baseHeaders }) => ({ ...baseHeaders, "X-Trace": "1" }).

For options that the Fetch API doesn't support, such as Next.js's next, use extraFetchOptions.