Is there a way to add custom header to Server Actions calls in Next.js?

[ptvty]

Summary

I'm using server actions in my Next.js app (export function myAction() {} with use server). These server actions are invoked from client components.

I want to include a custom request header (e.g., X-Custom-Header) in every request made from the client to these server actions. The goal is for this header to be accessible in my middleware.ts, where I can process it further.

Is there a standard or recommended way to achieve this without globally overriding fetch? Ideally, I’d like to ensure that all server action calls automatically include this header without requiring modifications to every individual action invocation, but it's still okay if there are ways to achieve this with modifications to the function itself.

Thanks!

Additional information

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Example

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