Functions · Customer documentation

What you prepare

A small JavaScript HTTP handler.

Steps in the workspace

1. 01Enter JavaScript code.
2. 02Send a test request to the URL.
3. 03Call it from your application or automation.

Example request / integration

Publish a function that uppercases a query string and returns JSON.

// Example source for the workspace editor:
export default {
  async fetch(request) {
    const name = new URL(request.url).searchParams.get('name') || 'world';
    return Response.json({ hello: name });
  }
};
// After creation, call the actual runtime URL from the result.

Examples use placeholders: replace $BASE_URL, $SESSION_TOKEN and issued URLs with real values. Never publish session tokens or API keys in a webpage or repository.

Management API entry point

POST /api/picosvc/functions/apps

Name and JavaScript code with a fetch(request) handler returning a Response.

Callable function URL and HTTP response.

What it does not do

Not a general-purpose server supporting arbitrary packages or long-running workloads.

Feature comparison and sources

Function development and delivery：Register small JavaScript handlers as HTTP functions.

Vercel Functions：Documents server-side functions integrated with application frameworks and scaling.