Documentation

Build with Nucleus

The unified India data platform — fuel prices, precious metals, train enquiry, PNR status & GST verification. One REST API, zero friction, free forever.

https://apiw.proxynex.pro ⧉ copy

Commodities

Train services

12+

Endpoints

100%

Free & open

🔗

Base URL

All requests hit this endpoint

Every Nucleus API request is made to the base URL below. All responses are JSON with UTF-8 encoding. CORS is enabled for all origins.

Endpoint

// Base URL for all requests
https://apiw.proxynex.pro

🔑

Authentication

Zero setup

Nucleus is a public API. No API keys, no tokens, no OAuth. Send a GET request, receive JSON. That's it.

No key required

No authentication headers needed

CORS enabled

Access-Control-Allow-Origin: *

HTTPS only

Encrypted transport by default

⛽

Fuel & Precious Metals

Crawled 5× daily · 05:30 – 10:30 IST

Petrol, diesel, gold, silver and platinum prices across Indian cities & states. Commodity-agnostic schema — one endpoint, one param.

GET/fuel

Latest prices for all locations. Defaults to petrol.

CORE

GET/fuel?commodity=gold

Switch commodity — petrol · diesel · gold · silver · platinum.

QUERY

GET/fuel?city=mumbai

Single city lookup. Case-insensitive.

FILTER

GET/fuel?type=state

Filter by location type — state or city.

FILTER

GET/fuel/cities

List all available cities for a commodity.

#Query parameters

Parameter	Values	Default	Required	Notes
`commodity`	petrol · diesel · gold · silver · platinum	petrol	OPTIONAL	Required for metals
`city`	mumbai, delhi, kolkata…	—	OPTIONAL	Case-insensitive
`state`	west bengal, bihar…	—	OPTIONAL	Fuel only
`type`	city · state	—	OPTIONAL	Location type filter
`q`	any string	—	REQUIRED	For /fuel/search
`days`	1–90	7	OPTIONAL	History window

#Examples

GET /fuel?commodity=gold&city=delhi

# Gold in Delhi — 24K / 22K / 18K
{
  "status": "ok",
  "data": [{
    "location": "Delhi",
    "location_type": "city",
    "unit": "per_gram_24k",
    "price": 14437.00,
    "details": {
      "price_22k": 13225,
      "price_18k": 10831
    }
  }]
}

GET /fuel/history?commodity=gold&city=india&days=7

# National gold history — last 7 days
{
  "status": "ok",
  "data": [
    { "date": "2026-08-02", "price": 14422.00 },
    { "date": "2026-08-01", "price": 14422.00 },
    { "date": "2026-07-31", "price": 14386.00 }
  ]
}

🚂

Train Enquiry

Multi-provider failover · high availability

Live Indian Railways data — trains between stations, train information, routes and PNR status with automatic provider failover.

GET/train?from=MMCT&to=NDLS

All trains between two stations (station codes).

CORE

GET/train?from=DDR&to=MMCT&date=20260802

Optional date filter — YYYYMMDD format.

DATE

GET/train/info?number=12951

Train details — name, endpoints, timing, type, classes.

LOOKUP

GET/train/route?number=12301

Station-wise route — timings & coordinates.

ROUTE

GET/train/pnr?number=6705123201

PNR status — train, date, class & passenger-wise status.

PNR10-DIGIT

#Examples

GET /train?from=MMCT&to=NDLS

# Trains between Mumbai Central and New Delhi
{
  "status": "ok",
  "count": 12,
  "trains": [{
    "train_number": "12951",
    "train_name": "NDLS TEJAS RAJ",
    "from": { "name": "Mumbai Central", "code": "MMCT" },
    "to": { "name": "New Delhi", "code": "NDLS" },
    "departure": "17.00",
    "arrival": "08.32",
    "duration": "15.32"
  }]
}

#PNR status

GET /train/pnr?number=6705123201

# Booking status — passenger-wise
{
  "status": "ok",
  "pnr": "6705123201",
  "train_number": "13185",
  "train_name": "GANGA SAGAR EXP",
  "travel_date": "05-08-2026",
  "from": { "code": "ASN", "name": "Asansol Junction" },
  "to": { "code": "JYG", "name": "Jaynagar" },
  "class": "3A",
  "chart_prepared": false,
  "passengers": [
    { "number": 1, "booking_status": "CNF B1 52", "current_status": "CNF" },
    { "number": 2, "booking_status": "CNF B1 51", "current_status": "CAN/MOD" }
  ]
}

ℹ️

PNR uses multi-provider failover — requests automatically route to backup sources if the primary is unreachable. Station codes are 3–4 letters (MMCT, NDLS, DDR).

🧾

GST Verification

Public registry lookup

Verify any GSTIN instantly — legal name, trade name, address, registration status, constitution & GPS coordinates.

GET/gst?number=19HKJPM4450C1Z1

Verify GSTIN — complete taxpayer profile.

CORE15-DIGIT

#Example

GET /gst?number=19HKJPM4450C1Z1

{
  "status": "ok",
  "gstin": "19HKJPM4450C1Z1",
  "trade_name": "GENX COMPUTER",
  "legal_name": "Arnab Modak",
  "registration_status": "Active",
  "registration_date": "22/06/2024",
  "constitution": "Proprietorship",
  "taxpayer_type": "Regular",
  "nature_of_business": ["Retail Business", "Others"],
  "state": "West Bengal",
  "address": "C/O Haradhan Modak, Radhanagar, Ghatal",
  "lat": 22.666033,
  "lon": 87.732022
}

📌

GSTIN format: 15 characters — 2-digit state code + 10-char PAN + entity number + Z + check digit. Malformed input returns 400.

🚗

Vehicle Info (RC)

Multi-source · cached 24h

Full RC lookup by registration number — owner, make, model, fuel, insurance, address & more. Multi-source with automatic failover.

GET/vehicle?number=JH03AH8817

Full vehicle details from registration number.

CORERC

#Example

GET /vehicle?number=JH03AH8817

{
  "status": "ok",
  "registration": "JH03AH8817",
  "vehicle": "Tata Nexon",
  "type": "PRIVATE_CAR",
  "owner": "RAKESH KUMAR SINGH",
  "make": "Tata",
  "model": "Nexon",
  "fuel": "PETROL",
  "color": "ATLAS BLACK",
  "registration_date": "03-Aug-2022",
  "rto": "PALAMU, Jharkhand",
  "insurer": "iffco-tokio",
  "insurance_expiry": "31-Jul-2025",
  "insurance_expired": true,
  "permanent_address": "VILL-JAIDU, Palamu, Jharkhand 822122"
}

ℹ️

Format: AA00XX0000 (state + district + series + number). Engine & chassis numbers are masked. Uses multi-source failover — auto-switches if primary is down. Cached 24h.

📸

Website Screenshots

Headless Chromium · PNG output

Capture any public web page as a PNG image — full-page or viewport. Powered by headless Chromium, zero API key. Pass device for mobile/tablet/desktop viewports.

GET/screenshot?url=https://example.com

Viewport screenshot — returns image/png directly.

CORE

GET/screenshot?url=...&full=true

Full-page capture — entire scrollable page.

FULL

GET/screenshot?url=...&width=900

Custom viewport width (320–2560).

SIZE

GET/screenshot?url=...&wait=3000

Extra wait for JS-heavy sites (0–10000ms).

WAIT

#Parameters

Parameter	Values	Default	Required	Notes
`url`	any http(s) URL	—	REQUIRED	Must be public, no localhost
`width`	320–2560	1280	OPTIONAL	Viewport width px
`height`	240–2560	800	OPTIONAL	Viewport height px
`full`	true · false	false	OPTIONAL	Full-page capture
`wait`	0–10000	1500	OPTIONAL	ms to wait for JS
`device`	iphone14 · pixel8 · galaxy · ipad · tablet · desktop · macbook · fullhd…	—	OPTIONAL	Preset screen size + mobile UA

#Device presets

Device	Size	Type
`iphone14` · `iphone13` · `iphone12` · `iphone`	390 × 844	📱 Phone
`pixel8` · `pixel7` · `android`	412 × 915	📱 Phone
`galaxy`	360 × 800	📱 Phone
`ipad` · `tablet`	768–820 × 1024–1180	📲 Tablet
`desktop`	1366 × 768	💻 Desktop
`macbook`	1440 × 900	💻 Laptop
`fullhd`	1920 × 1080	🖥️ Monitor

#Usage

Full-page screenshot

# Returns image/png — use directly in <img> or download
curl "https://apiw.proxynex.pro/screenshot?url=https://examtrend.in&full=true&width=1280" -o page.png

# Mobile device screenshot (iPhone 14 — 390x844 + mobile UA)
curl "https://apiw.proxynex.pro/screenshot?url=https://store.proxynex.pro&device=iphone14" -o mobile.png

# Desktop 1366x768
curl "https://apiw.proxynex.pro/screenshot?url=https://examtrend.in&device=desktop" -o desktop.png

# In HTML
<img src="https://apiw.proxynex.pro/screenshot?url=https://store.proxynex.pro&width=900" />

# Python
import requests
r = requests.get("https://apiw.proxynex.pro/screenshot",
              params={"url": "https://examtrend.in", "full": "true"})
open("shot.png", "wb").write(r.content)

🛡️

SSRF-protected — private/local hosts are blocked. Screenshots are served with a 5-minute cache.

📟

Status codes

HTTP semantics

200 OK

Success — data returned

400 Bad Request

Missing or invalid parameters

404 Not Found

GSTIN / PNR not in registry

500 Internal Error

Upstream provider failure

⏱️

Rate limits

Fair-use policy

Endpoint group	Limit	Notes
`/fuel*`	60 req/min	Database-backed — fast
`/train*`	20 req/min	Live upstream fetch
`/train/pnr`	10 req/min	Multi-provider failover
`/gst`	10 req/min	Live registry lookup

✓

Limits are generous for public use. Need a higher quota? Reach out — we're happy to help.

🧪

API tester

Live playground

Playground — nucleus / api

// Response will appear here…

🚀

Quick start

Integrate in minutes

🟨 JavaScript — fetch

const res = await fetch("https://apiw.proxynex.pro/fuel?commodity=gold&city=mumbai");
const data = await res.json();
console.log(data.data[0].price);  // gold ₹/gram

🟩 Node.js

node

const res = await fetch("https://apiw.proxynex.pro/train?from=MMCT&to=NDLS");
const { trains } = await res.json();
trains.forEach(t => console.log(t.train_number, t.train_name));

🐍 Python

import requests
r = requests.get("https://apiw.proxynex.pro/fuel",
              params={"commodity": "diesel", "type": "state"}).json()
for row in r["data"]:
    print(row["location"], row["price"])

⬛ cURL

curl "https://apiw.proxynex.pro/train/pnr?number=6705123201"
curl "https://apiw.proxynex.pro/gst?number=19HKJPM4450C1Z1"