PHP integration
GSTIN Verification API with PHP
Use this PHP example to call GET /v1/gstin/{gstin} with an API key. This page contains a language-specific snippet, auth notes and links back to full docs — not a thin doorway duplicate.
What you need
- An API Seeker key (Free plan is enough to start)
- Base URL
https://gstchk.apiseeker.com - Path
/v1/gstin - Header authentication via
X-API-Key
PHP example
PHP
<?php
$ch = curl_init("https://gstchk.apiseeker.com/v1/gstin/29ABCDE1234F1Z5");
curl_setopt($ch, CURLOPT_HTTPHEADER, ["X-API-Key: YOUR_API_KEY"]);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$response = curl_exec($ch);
echo $response;Expected response shape
JSON
{
"gstin": "29ABCDE1234F1Z5",
"valid": true,
"legalName": "Example Private Limited",
"tradeName": "Example",
"status": "Active",
"stateCode": "29"
}