Empowering Frontend Developers
A lightweight backend gets out of your way so you can focus on building amazing user interfaces. Instead of waiting for a backend team to create endpoints for every new feature, frontend developers can define their own data structures in JSON and instantly read/write to them via API. It's the fastest way to add state and persistence to React, Vue, or vanilla JavaScript applications — and it's equally perfect for autonomous AI agents that need a simple REST interface to store and retrieve context.
// Frontend devs: no backend team needed
// Just fetch and render
const [todos, setTodos] = useState([]);
useEffect(() => {
fetch('https://api.jsonstorage.net/v1/json/YOUR_USER_ID/todos')
.then(r => r.json())
.then(setTodos);
}, []);
// Update with a single PATCH
await fetch(
'https://api.jsonstorage.net/v1/json/YOUR_USER_ID/todos',
{
method: 'PATCH',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify({ items: [...todos, newTodo] })
}
);Real-World Use Cases
React & Vue State Persistence
Add a persistent backend to your React or Vue app without Express, Django, or Rails. Fetch state on mount, update it on change. Your component is the API consumer and you control the schema.
LLM Tool Calling & Agent Memory
Autonomous AI agents and LLMs need lightweight storage for tool calling results, session context, and chain-of-thought logs. JSON Storage gives them a simple REST interface with zero setup — ideal for agentic workflows.
Browser Extensions & Bookmarklets
Build Chrome extensions or bookmarklets that persist user data to the cloud. No auth server, no database — just POST your data and GET it back on any device the user logs into.
Design Tool Integrations
Connect Figma plugins, design tokens, or UI kits to a central JSON config. Designers update values in the dashboard, and your build pipeline pulls the latest tokens automatically.
Jamstack & Serverless Apps
Jamstack apps thrive on APIs. Use JSON Storage as the dynamic data layer for your Netlify, Vercel, or Cloudflare Pages deployment. No cloud functions required for basic CRUD operations.
No-Code & Low-Code Backends
Building with Bubble, Retool, or Zapier? Point your HTTP actions at a JSON Storage endpoint. It gives your low-code tools a real API backend without provisioning any infrastructure.
Try now, no authentication required
Use the snippets below as an example or check out documentation at github.com/jsonstorage/docs. Add dynamic content, forms or personalization to your static site, manage smart home, store state for AI agents, monitor server room temperatures in hundreds of locations using Raspberry Pi, or simply play with the API - JsonStorage is super simple and scales up to your needs.
Request JSON (JSFiddle)
Create JSON (JSFiddle)
Update JSON (JSFiddle)
Patch JSON (JSFiddle)
(NEW) Submit a form (JSFiddle)
Start with a free 31-day trial
Get started for free — no account needed. Every paid plan includes a 31-day free trial so you can try before you commit. The free tier includes 25 items, 1,000 requests per month, and up to 64kb per item. Upgrade when you need more storage, higher limits, or priority support.
Need help choosing a plan? Contact us @jsonstorage