Do I need an API key?

No API key is needed. HTTPBin is completely free and open to use without any authentication.

Is there a rate limit?

No rate limit has been documented. HTTPBin appears to have no restrictions on usage frequency.

What does the response look like?

See the Live Example section below for the actual JSON response. You get back details about the HTTP request you sent including headers, your IP, and any data you posted.

HTTPBin - Free HTTP Request Debugging API

TL;DR

What it does: Free HTTP debugging tool that shows exactly what your HTTP client sends. Test GET, POST, PUT, DELETE, status codes, delays, redirects, and authentication through simple URLs.

Quick start: https://httpbin.org/get

No API key needed - just call the URL

Overview

HTTPBin is a free HTTP request and response debugging service that lets you see exactly what your HTTP client is sending. When you make a request to any HTTPBin endpoint, it reflects back information about your request including headers, IP address, query parameters, form data, and JSON payloads. It supports all common HTTP methods and includes endpoints for testing status codes, response delays, redirects, authentication, and more. No API key or registration required.

Live Example

Here's the exact URL to call and the real response you'll get:

The URL to call:

https://httpbin.org/get

Try This URL Now →

The actual response you get:

{
  "args": {},
  "headers": {
    "Accept": "*/*",
    "Host": "httpbin.org",
    "User-Agent": "curl/8.9.1",
    "X-Amzn-Trace-Id": "Root=1-..."
  },
  "origin": "203.0.113.1",
  "url": "https://httpbin.org/get"
}

What does this data mean?

HTTPBin returns everything about the request you made. Here is what each field in the response tells you:

args: Query parameters you included in the URL. For ?foo=bar&baz=123 you get {"foo": "bar", "baz": "123"}. Empty object means no query params were sent.
headers: All the HTTP headers your client sent with the request, including User-Agent, Host, Accept, cookies, and custom headers.
origin: Your IP address as seen by the server. Useful for checking what your outgoing IP looks like.
url: The exact full URL you requested, including any query parameters.
method: HTTP method used (GET, POST, PUT, DELETE, PATCH, etc.). Only appears on the /anything endpoint.
data: Raw request body content (for non-JSON payloads like plain text or XML).
form: Form data submitted with application/x-www-form-urlencoded or multipart/form-data content types.
files: Any files uploaded in the request, returned as filename-content pairs.
json: Parsed JSON body when you send with Content-Type: application/json. Returns null if no JSON was sent.

How to use this API

JavaScript Example

// Test a GET request with query parameters
fetch('https://httpbin.org/get?foo=bar&baz=123')
  .then(res => res.json())
  .then(data => {
    console.log('Your IP:', data.origin);
    console.log('Query params:', data.args);
    console.log('Headers:', data.headers);
  });

// Test a POST request with a JSON payload
const payload = { name: 'test', value: 123 };
fetch('https://httpbin.org/post', {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify(payload)
})
  .then(res => res.json())
  .then(data => console.log('You posted:', data.json));

// Test a delayed response (2 second delay)
fetch('https://httpbin.org/delay/2')
  .then(res => res.json())
  .then(data => console.log('Response after 2s:', data));

Python Example

import requests

# Test a GET request with query parameters
r = requests.get('https://httpbin.org/get', params={'foo': 'bar'})
data = r.json()
print(f"Your IP: {data['origin']}")
print(f"Query params: {data['args']}")

# Test a POST request with a JSON payload
payload = {'name': 'test', 'value': 123}
r = requests.post('https://httpbin.org/post', json=payload)
data = r.json()
print(f"You posted: {data['json']}")

# Test a delayed response (3 second delay)
r = requests.get('https://httpbin.org/delay/3')
data = r.json()
print(f"Response after 3s, URL: {data['url']}")

Frequently Asked Questions

Do I need an API key?: No! HTTPBin is completely free and open with no authentication required. Just call any endpoint URL.
Is there a rate limit?: None documented. HTTPBin appears to have no restrictions on usage, though reasonable use is encouraged.
What HTTP methods can I test?: All of them. Use /get, /post, /put, /patch, /delete - each returns details about the corresponding HTTP method.
How do I test a POST request?: Send your POST data to https://httpbin.org/post. The json field in the response will contain your parsed JSON body, form will contain form-encoded data, and files will contain uploaded files.
How do I test response delays?: Use /delay/{n} where {n} is the number of seconds to wait. For example, https://httpbin.org/delay/3 waits 3 seconds before responding.
How do I test status codes?: Use /status/{code} like https://httpbin.org/status/404 for a 404 response, or /status/500 for a 500 error.
How do I test redirects?: Use /redirect/{n} for {n} consecutive redirects, or /redirect-to?url=... to redirect to a specific URL.
Can I test authentication?: Yes! Use /basic-auth/{user}/{passwd} for Basic Auth, /bearer for Bearer token auth, or /digest-auth/{qop}/{user}/{passwd} for Digest Auth.
Can I test custom headers?: Yes. Send any custom headers you like and HTTPBin will echo them back in the headers field of the response.
Can I use this commercially?: Yes, HTTPBin is open source (MIT license) and free for both personal and commercial use. Check the official documentation for any specific restrictions.
How do I parse the JSON response?: In JavaScript: data.origin, data.headers. In Python: data['origin'], data['headers']. The field explanations above show what each field contains.

API Details

Base URL: https://httpbin.org
Documentation: https://httpbin.org/
Category: Developer Tools
Authentication: None required - completely free
Rate Limit: None documented
Geographic Coverage: Global