httpbin

httpbin.org · Developer Tools

Developer Tools No Auth Free & Open Testing HTTP Developer Tools

HTTP request/response testing service — test your HTTP client with endpoints that echo requests, simulate delays, return specific status codes, and handle auth flows. No API key.

Authentication

No authentication requiredFree to use with no key needed.

Sample Requests

GET Echo GET request

Echo back your GET request headers and params.

https://httpbin.org/get?test=value

Hover any highlighted part to learn what it does

curl -X GET "https://httpbin.org/get?test=value"

import requests
params = {
    "test": "value"
}
response = requests.get(
    "https://httpbin.org/get",
    params=params,
)
print(response.json())

const url = new URL('https://httpbin.org/get');
url.searchParams.set('test', 'value');

const response = await fetch(url); 
const data = await response.json();
console.log(data);

package main

import (
	"fmt"
	"io"
	"net/http"
	"net/url"
)

func main() {
	baseURL, _ := url.Parse("https://httpbin.org/get")
	q := baseURL.Query()
	q.Set("test", "value")
	baseURL.RawQuery = q.Encode()
	targetURL := baseURL.String()
	req, _ := http.NewRequest("GET", targetURL, nil)

	client := &http.Client{}
	resp, _ := client.Do(req)
	defer resp.Body.Close()
	body, _ := io.ReadAll(resp.Body)
	fmt.Println(string(body))
}

require "net/http"
require "json"

uri = URI("https://httpbin.org/get")
uri.query = URI.encode_www_form({
  "test" => "value"
})

http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = uri.scheme == "https"

req = Net::HTTP::Get.new(uri)

res = http.request(req)
puts JSON.parse(res.body)

<?php
$url = "https://httpbin.org/get?" . http_build_query([
    "test" => "value"
]);
$opts = ["http" => [
    "method" => "GET",
]];
$ctx = stream_context_create($opts);
$res = file_get_contents($url, false, $ctx);
print_r(json_decode($res, true));

POST Test POST

Echo back your POST request body and headers.

https://httpbin.org/post

Hover any highlighted part to learn what it does

Headers — extra info sent with the request

Content-Type

application/json

Request Body — data you're sending

{
  "key": "value"
}

curl -X POST "https://httpbin.org/post" \
  -H "Content-Type: application/json" \
  -H "Content-Type: application/json" \
  -d '{"key":"value"}'

import requests
headers = {
    "Content-Type": "application/json"
}
data = {
    "key": "value"
}
response = requests.post(
    "https://httpbin.org/post",
    headers=headers,
    json=data,
)
print(response.json())

const url = 'https://httpbin.org/post';

const response = await fetch(url, {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json'
  },
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({
  "key": "value"
}),
}); 
const data = await response.json();
console.log(data);

package main

import (
	"fmt"
	"io"
	"net/http"
	"bytes"
	"encoding/json"
)

func main() {
	targetURL := "https://httpbin.org/post"
	jsonData, _ := json.Marshal({"key":"value"})
	req, _ := http.NewRequest("POST", targetURL, bytes.NewBuffer(jsonData))
	req.Header.Set("Content-Type", "application/json")
	req.Header.Set("Content-Type", "application/json")

	client := &http.Client{}
	resp, _ := client.Do(req)
	defer resp.Body.Close()
	body, _ := io.ReadAll(resp.Body)
	fmt.Println(string(body))
}

require "net/http"
require "json"

uri = URI("https://httpbin.org/post")

http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = uri.scheme == "https"

req = Net::HTTP::Post.new(uri)
req["Content-Type"] = "application/json"
req["Content-Type"] = "application/json"
req.body = "{\"key\":\"value\"}"

res = http.request(req)
puts JSON.parse(res.body)

<?php
$url = "https://httpbin.org/post";
$opts = ["http" => [
    "method" => "POST",
    "header" => implode("\r\n", [
        "Content-Type: application/json",
        "Content-Type: application/json"
    ]),
    "content" => json_encode({"key":"value"}),
]];
$ctx = stream_context_create($opts);
$res = file_get_contents($url, false, $ctx);
print_r(json_decode($res, true));

GET Simulate delay

Simulate a 2-second server delay. Useful for timeout testing.

https://httpbin.org/delay/2

Hover any highlighted part to learn what it does

curl -X GET "https://httpbin.org/delay/2"

import requests
response = requests.get(
    "https://httpbin.org/delay/2",
)
print(response.json())

const url = 'https://httpbin.org/delay/2';

const response = await fetch(url); 
const data = await response.json();
console.log(data);

package main

import (
	"fmt"
	"io"
	"net/http"
)

func main() {
	targetURL := "https://httpbin.org/delay/2"
	req, _ := http.NewRequest("GET", targetURL, nil)

	client := &http.Client{}
	resp, _ := client.Do(req)
	defer resp.Body.Close()
	body, _ := io.ReadAll(resp.Body)
	fmt.Println(string(body))
}

require "net/http"
require "json"

uri = URI("https://httpbin.org/delay/2")

http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = uri.scheme == "https"

req = Net::HTTP::Get.new(uri)

res = http.request(req)
puts JSON.parse(res.body)

<?php
$url = "https://httpbin.org/delay/2";
$opts = ["http" => [
    "method" => "GET",
]];
$ctx = stream_context_create($opts);
$res = file_get_contents($url, false, $ctx);
print_r(json_decode($res, true));

Postman Setup Guide

Get Postman ↗

No API key needed
Echo GET: GET https://httpbin.org/get
Echo POST: POST https://httpbin.org/post with any body
Status codes: GET https://httpbin.org/status/404
Delay: GET https://httpbin.org/delay/3 (3 second delay)
Auth: GET https://httpbin.org/basic-auth/user/pass with Basic auth

What can you build with httpbin?

httpbin is a Developer Tools API. Developers commonly use developer tools APIs for:

automating code review and quality checks
integrating CI/CD pipelines and build systems
managing feature flags and A/B tests
monitoring errors and application performance
generating and validating test data

No authentication required. This API is open — no signup or key needed. Ideal for quick prototypes and public-facing features. httpbin is free to use, making it a low-risk choice to experiment with.

New to APIs? Read our beginner's guide

Open documentation ↗