1
0 Comments

🚀 From English Prompt to Live API in Seconds — AI JSON Generator + Mock API Tool

I just launched a new feature for Format JSON Online — an AI JSON Generator that can turn plain English into valid JSON, and then instantly publish it as a mock REST API.

Here’s what it can do:

⚡ How it works:
1️⃣ Describe your data in plain English — e.g., “An array of 3 users with name, email, and createdAt date”.
2️⃣ AI generates clean, valid JSON instantly.
3️⃣ Edit, validate, and publish it as a live, shareable API endpoint.

✨ Key Features:

AI-powered JSON creation from prompts.

Instant mock API hosting with no backend required.

JSON validation to avoid syntax errors.

Supports large & complex JSON structures.

Bonus tools: JSON ↔ CSV, JSON ↔ XML, cURL → JSON.

New! Create Your Own API with AI + your own data.

New! Chrome extension to format/convert JSON anywhere.

💡 Popular use cases:

Frontend prototypes without waiting for backend APIs.

API contract demos for teams & clients.

Generating realistic test data for QA & automation.

Learning JSON structures & syntax quickly.

If you’ve ever wasted time typing brackets or debugging a missing comma, this will save you hours.
Would love feedback from other devs, especially on the AI generation accuracy.

👉 Try it here: https://formatjsononline.com/ai-json-generator

posted to Icon for group Developers
Developers
on August 12, 2025
Trending on Indie Hackers
30 days ago I posted here with $0 revenue. Here's what actually happened next. User Avatar 148 comments I used $30,983 of AI tokens last month in Claude code on $200/mo plan User Avatar 90 comments my reddit post got 600K+ views. here's exactly what i did User Avatar 58 comments How to spot high-intent customers in 5 minutes, for free. User Avatar 44 comments Fixing broken scrapers instead of working on my actual product. So I made it my problem. User Avatar 37 comments I Built a Habit Tracker SaaS Alone in 6 Weeks (No CS Degree, No Team). Here's Exactly How User Avatar 37 comments