Postman Echo API

Overview

Measurement Record

What actually happened when we called this API from our own infrastructure. Every value below was recorded by the request, not copied from the provider's documentation.

Request

GET https://postman-echo.com/get?greeting=hello

Result

HTTP 200 · application/json · 379 bytes · compressed

Response time

212 ms (median of 3) · fastest 198 ms

Transport

TLSv1.3 · TLS_AES_256_GCM_SHA384 · certificate issued by Let's Encrypt

Browser CORS

No Access-Control-Allow-Origin header — call it from a server, not the browser

Served by

cloudflare

Recorded

2026-08-10

Fields Returned

Top-level fields present in the response we captured, with the type and value we actually received.

Captured Response

Captured from a real request to https://postman-echo.com/get?greeting=hello on 2026-08-10. Long arrays and nested objects are truncated to keep the shape readable.

{
  "args": {
    "greeting": "hello"
  },
  "headers": {
    "host": "postman-echo.com",
    "x-forwarded-proto": "https",
    "accept": "application/json,text/plain,*/*",
    "user-agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36",
    "origin": "https://apisscore.com",
    "accept-encoding": "gzip, br"
  },
  "url": "https://postman-echo.com/get?greeting=hello"
}

Implementation Example

Calls a real endpoint of this API. Replace any placeholder credentials with your own key.

const url = "https://www.postman-echo.com/";
const response = await fetch(url);
if (!response.ok) throw new Error(`Request failed: ${response.status}`);
const data = await response.json();
console.log(data);

import requests

url = "https://www.postman-echo.com/"
headers = {}

response = requests.get(url, headers=headers, timeout=30)
response.raise_for_status()
data = response.json()
print(data)

curl https://postman-echo.com/get?greeting=hello

What Can You Build?

// Validate an email address
const email = '[email protected]';
const response = await fetch(`https://www.postman-echo.com`);
const data = await response.json();
console.log('Valid:', data.valid ?? data.is_valid);
console.log('Details:', data);

// Validate form input data
const formData = { field: '[email protected]' };
const response = await fetch(`https://www.postman-echo.com`);
const result = await response.json();
const isValid = result.valid || result.is_valid || false;
document.getElementById('status').textContent = 
  isValid ? '✅ Valid input' : '❌ Invalid input';

// Validate data using Postman Echo
const input = '+1-555-123-4567';
const response = await fetch(`https://www.postman-echo.com`);
const data = await response.json();
console.log('Validation result:', data);
if (data.valid) {
  console.log('Input is valid:', data.formatted || input);
} else {
  console.log('Validation failed:', data.error || 'Invalid input');
}

Note: These code examples are AI-generated and unverified. Always refer to the official API documentation for accurate usage.

How This API Fails

We deliberately sent this API a broken request and recorded exactly what came back on 2026-08-10. Knowing the shape of an error before you hit it makes error handling much easier to write.

Common Errors & Troubleshooting

Generated guidance based on this API's documentation, not observed by us. Treat it as a starting point and check against the provider's own error reference.