Business · Live
GST Verification API
Validate any GSTIN and fetch taxpayer details in one API call.
What the GST Verification API does
Our GST Verification API validates an Indian GSTIN against the GST Network and returns the taxpayer’s legal name, trade name, registration status, constitution, address and recent return-filing status — instantly. One API key, one prepaid wallet, one GST invoice.
Popular use cases
- →Merchant / vendor onboarding for marketplaces and B2B platforms
- →Invoice and input-tax-credit validation for accounting software
- →KYB (Know Your Business) checks for lending and BNPL
curl -X POST https://apisathi.in/gw/v1/gstin-basic-v1/ \
-H "X-API-Key: live_xxx" \
-H "Content-Type: application/json" \
-d '{ "gstin": "27AAPFU0939F1ZV" }'{
"verified": true,
"legal_name": "…",
"status": "Active",
"state": "Maharashtra"
}Response fields returned by the GST Verification API
| Field | Example |
|---|---|
| verified | true |
| legal_name | … |
| status | Active |
| state | Maharashtra |
Every field, error code and the full schema are in the GST Verification API reference.
Call the GST Verification API from Node.js or Python
const res = await fetch('https://apisathi.in/gw/v1/gstin-basic-v1/', {
method: 'POST',
headers: { 'X-API-Key': process.env.APISATHI_KEY, 'Content-Type': 'application/json' },
body: JSON.stringify({"gstin":"27AAPFU0939F1ZV"}),
});
const data = await res.json();import os, requests
res = requests.post(
"https://apisathi.in/gw/v1/gstin-basic-v1/",
headers={"X-API-Key": os.environ["APISATHI_KEY"]},
json={"gstin":"27AAPFU0939F1ZV"},
timeout=30,
)
data = res.json()GST Verification API pricing
- → From ₹1.20 per successful call + 18% GST
- → Prepaid wallet from ₹200; no monthly fee, no minimum volume
- → Failed or timed-out calls are not charged
- → Bonus credit on recharges of ₹1,000 and above; GST invoice on every recharge
Start in four steps
- Create a free account — about a minute.
- Call the GST Verification API with your TEST key in the sandbox, free.
- Recharge the wallet (UPI, card or netbanking) from ₹200.
- Switch to your LIVE key — the same key works for every API.
Frequently asked questions
How much does the GST verification API cost?
It starts at ₹1.20 per call on a prepaid wallet, billed only on successful lookups. Volume pricing is available.
Is there a sandbox / free trial?
Yes — signup gives a test key that returns sandbox responses, plus starter credits to try live calls.
What data does it return?
Legal name, trade name, GST status, constitution of business, principal place of business, and return-filing status.
Am I charged if a GST Verification API call fails?
No. You pay only for successful calls. If the source is unavailable, times out or rejects the request, the amount held for that call is released straight back to your wallet.
How do I get a GST Verification API key?
Sign up at apisathi.in — it takes about a minute — and create a key under API Keys. Use the TEST key in the sandbox, then recharge from ₹200 and switch to a LIVE key. The same key works for every API on API Sathi.
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Start using the GST Verification API today
Sign up, recharge a prepaid wallet and generate a key in minutes. Lowest price guaranteed, no volume commitment.