How to use the ToolsFox Utils API in C#

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

Online · 1454 msEndpoint tested Nov 15, 2026

1. What you need

.NET 6 or newer. Paste into a top-level `Program.cs` and run `dotnet run`.

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

2. Make the request

using System.Net.Http;

using var http = new HttpClient { Timeout = TimeSpan.FromSeconds(10) };
var json = await http.GetStringAsync("https://cf-workers-demo.pianfox345.workers.dev");
Console.WriteLine(json);

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 C#?

No. The ToolsFox Utils API works without an API key, so the C# 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 · Java · Go · Ruby
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