ExtendsClass JSON Storage API

⭐ Beginner's Pick Development / No Auth Required Beginner HTTPS CORS
Free to Use Varies (check documentation)

Overview

ExtendsClass JSON Storage is a simple REST API that lets you create, read, update, and delete JSON objects online without any backend setup. It acts as a lightweight key-value store for JSON data, making it ideal for prototyping, sharing data between scripts, or persisting small datasets for demos. No authentication or account is required for basic usage.

💡

Beginner Tip

Think of this as a free JSON bin — you POST any JSON object and receive a unique ID to retrieve it later. It is perfect for saving API responses or sharing data between two scripts without setting up a database. Note that stored data is public by default and may be deleted after inactivity.

Available Data

Use case: Integrate a simple json store api data into web and mobile applications
ExtendsClass JSON Storage data via REST API
JSON-formatted response data
Freely accessible without authentication

Example Response

JSON Response
{
  "status": "success",
  "data": {
    "result": "Data from ExtendsClass JSON Storage",
    "description": "A simple JSON store API",
    "timestamp": "2025-01-15T10:00:00Z"
  }
}

Field Reference

id Unique identifier assigned to your stored JSON bin — save this to retrieve or update the data later.
status HTTP-style status code for the operation, e.g., 200 for success or 400 for invalid input.
uri Full URL you can use to GET, PUT, or DELETE this specific JSON bin.
data The JSON object you stored, returned as-is in GET responses.

Implementation Example

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

What Can You Build?

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

Common Errors & Troubleshooting

400 Bad Request on POST The request body is not valid JSON or the Content-Type header is missing
Always set Content-Type: application/json and verify your payload is valid JSON before sending.
Stored data returns 404 after some time ExtendsClass may delete bins that have not been accessed for an extended period
Do not rely on this service for permanent storage — use it for temporary prototyping only and export data you need to keep.
CORS error when updating from browser PUT/DELETE operations may be blocked by browser preflight checks depending on request headers
Use simple headers only (Content-Type: application/json) and avoid custom headers that trigger CORS preflight.

Matrix Score Breakdown

🌐 Reachability 30/30
⚡ Speed 15/20
🔒 Security 15/15
🛠 Developer XP 20/20
✓ Reliability 7/15
Response Time 310ms

Fully tested on Apr 5, 2026

Technical Specifications

Auth No Auth
HTTPS REQUIRED
CORS YES
Category Development
Difficulty Beginner
Verified: 2026-04-04

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