JSON to TypeScript API

Generate TypeScript interface definitions from JSON example data via REST API. Infers types from values, handles nested objects (generates nested interfaces), handles arrays (infers element types), and handles optional fields across multiple example objects.

How it works

POST a JSON object or array. The API inspects the structure and value types, generates appropriate TypeScript interface names from context, handles null as T | null, and returns a complete .ts compatible interface definition.

Use cases

• Generate TypeScript types for API responses during integration
• Create type definitions for JSON configuration files
• Bootstrap TypeScript types for third-party API data in new projects
• Automate type generation in code scaffolding tools

API Reference

POST https://slopshop.gg/v1/code-json-to-typescript
Authorization: Bearer YOUR_API_KEY
Content-Type: application/json

Input parameters

Example response

{
  "data": {
    "result": "success",
    "processed": true
  },
  "meta": {
    "credits_used": 3,
    "engine": "real",
    "ms": 4
  }
}

Examples

Three real-world scenarios showing how developers use JSON to TypeScript in production.

curl -X POST https://slopshop.gg/v1/code-json-to-typescript \
  -H "Authorization: Bearer $SLOPSHOP_KEY" \
  -H "Content-Type: application/json" \
  -d '{"json": {"id": 42, "name": "Alice", "email": "alice@example.com", "created_at": "2025-01-15T10:30:00Z", "plan": {"type": "pro", "expires": "2026-01-15"}}}'

curl -X POST https://slopshop.gg/v1/code-json-to-typescript \
  -H "Authorization: Bearer $SLOPSHOP_KEY" \
  -H "Content-Type: application/json" \
  -d '{"json": {"server": {"port": 3000, "host": "localhost"}, "database": {"url": "postgres://...", "pool": 10}, "features": {"enableBeta": false}}}'

curl -X POST https://slopshop.gg/v1/code-json-to-typescript \
  -H "Authorization: Bearer $SLOPSHOP_KEY" \
  -H "Content-Type: application/json" \
  -d '{"json": {"event": "order.created", "order_id": 1234, "customer": {"id": 99, "email": "bob@example.com"}, "total": 149.99, "items": [{"sku": "ABC", "qty": 2}]}}'

Code examples

curl

curl -X POST https://slopshop.gg/v1/code-json-to-typescript \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"input": "your data here"}'

Python

import requests

response = requests.post(
    "https://slopshop.gg/v1/code-json-to-typescript",
    headers={"Authorization": "Bearer YOUR_API_KEY"},
    json={"input": "your data here"}
)
result = response.json()
print(result["data"])

Node.js

const response = await fetch("https://slopshop.gg/v1/code-json-to-typescript", {
  method: "POST",
  headers: {
    "Authorization": "Bearer YOUR_API_KEY",
    "Content-Type": "application/json"
  },
  body: JSON.stringify({ input: "your data here" })
});
const { data } = await response.json();
console.log(data);

CLI

# Install the Slopshop CLI
npm install -g slopshop

# Set your API key
export SLOPSHOP_KEY=your_api_key

# Call code-json-to-typescript
slop code-json-to-typescript '{"input": "your data here"}'

Pricing

Credits are purchased in bundles starting at $1 for 1,000 credits. All compute APIs like this one use 3 credits per call — that's $0.003. See all pricing tiers.

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