M
API Matrix

JSONbin.io API

⭐ Beginner's Pick Development / API Key Intermediate HTTPS CORS
Varies by plan (check documentation)
82 Score
Grade A
Visit Official Site Compare Alternatives

Overview

JSONbin.io is a free cloud-based JSON storage and hosting service that lets you create, read, update, and delete JSON data bins via a simple REST API. It is ideal for prototyping apps, storing small datasets, or sharing JSON snippets without setting up a database. The free tier requires an API key and provides persistent cloud storage for your JSON objects.

💡

Beginner Tip

Create a bin with a POST request and save the returned bin ID as you will use it for all future reads and updates. The X-Master-Key header is required for all authenticated operations.

Available Data

JSONbin.io data via REST API
JSON-formatted response data
Requires API key authentication

Example Response

JSON Response 
{
  "status": "success",
  "data": {
    "result": "Data from JSONbin.io",
    "description": "Free JSON storage service. Ideal for small scale Web apps, Websites and Mobile apps",
    "timestamp": "2025-01-15T10:00:00Z"
  }
}

Field Reference

metadata.id Unique identifier for the created or retrieved bin
metadata.createdAt ISO 8601 timestamp of when the bin was created
record The actual JSON data stored in the bin
metadata.name Optional human-readable name for the bin if set
metadata.private Whether the bin is private (true) or publicly accessible (false)

Implementation Example 

const url = "https://jsonbin.io/";
// Replace headers or query params with the values required by this API.
const response = await fetch(url, {
  headers: {
  "X-API-Key": "YOUR_API_KEY"
  }
});
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

401 Unauthorized Missing or incorrect X-Master-Key or X-Access-Key header
✓ Sign up at jsonbin.io to get your Master Key, then include it as X-Master-Key: YOUR_API_KEY in all requests
404 Not Found The bin ID in the URL does not exist or was deleted
✓ Verify the bin ID is correct; bin IDs are returned when you first create a bin with POST /b
Request body not stored correctly The Content-Type header was not set to application/json
✓ Always include Content-Type: application/json when creating or updating bins with JSON data

Matrix Score Breakdown

🌐 Reachability 30/30
⚡ Speed 10/20
🔒 Security 15/15
🛠 Developer XP 17/20
✓ Reliability 10/15

Partially tested on Apr 5, 2026

Technical Specifications

Auth API Key
HTTPS REQUIRED
CORS YES
Category Development
Difficulty Intermediate
Verified: 2026-04-04

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