How to use the ToolsFox Utils API in Java

Free developer utility API: UUID, timestamps, SHA-256, Base64, URL encode/decode, random strings. This guide calls it from Java with code we've run against the live endpoint.

Online · 1454 msEndpoint tested Nov 15, 2026

1. What you need

Java 11 or newer (java.net.http is built in). Works as a single-file `java Main.java` run.

No API key or sign-up. Endpoint: https://cf-workers-demo.pianfox345.workers.dev

2. Make the request

Java

import java.net.URI;
import java.net.http.*;

var client = HttpClient.newHttpClient();
var req = HttpRequest.newBuilder(URI.create("https://cf-workers-demo.pianfox345.workers.dev")).build();
var res = client.send(req, HttpResponse.BodyHandlers.ofString());
System.out.println(res.body());

3. The response

Trimmed from the live response on Nov 15, 2026.

JSON

{
  "name": "ToolsFox Utils",
  "host": "cf-workers-demo.pianfox345.workers.dev",
  "desc": "Free developer utility API — no auth, CORS enabled, HTTPS",
  "endpoints": [
    "GET /ping",
    "GET /ip",
    "GET|POST /echo"
  ],
  "colo": "LAX",
  "time": "2026-11-15T14:01:38.413Z"
}

4. Before you ship

Set a timeout and handle non-200 responses: free APIs can rate-limit or go down.
Cache responses where you can, instead of calling the API on every page view.
Read the official documentation ↗ for rate limits and terms of use.

FAQ

Does the ToolsFox Utils API need an API key in Java?

No. The ToolsFox Utils API works without an API key, so the Java example runs as-is.

Can I call the ToolsFox Utils API from the browser?

Yes. It sends CORS headers, so front-end JavaScript can call it directly.

What does the ToolsFox Utils API return?

JSON. The example response on this page is trimmed from a real response our health check received on Nov 15, 2026.

Same API in: Python · JavaScript · Node.js · PHP · Go · Ruby · C#
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