Functions - Result Backend

Invoke from the app:

const { data, error } = await backend.functions.invoke("my-function", {
  method: "POST",
  body: { orderId },
});

Writing and deploying

Code is a Deno module - standard fetch/Response, ESM imports, no bundler:

// fn.ts
export default async function (req: Request) {
  const { orderId } = await req.json();
  return new Response(JSON.stringify({ ok: true, orderId }), {
    headers: { "Content-Type": "application/json" },
  });
}

npx @resultdev/cli functions deploy my-function --file fn.ts

The same command updates an existing function. It runs at $NEXT_PUBLIC_BACKEND_URL/functions/my-function.

Secrets

Store API keys once; read them inside functions as environment variables:

npx @resultdev/cli secrets set OPENWEATHER_KEY=...

// inside the function
const key = Deno.env.get("OPENWEATHER_KEY");

When to use a function

Put logic in a function (not client code) when it involves secrets, spend (AI calls, email sends), or trust (payments, fulfillment) - anything a stranger holding your publishable key must not be able to drive.