Business Verification · GST

Real-Time GST Verification API for GSTIN Validation & Business Verification in India

Validate Goods and Services Tax (GST) numbers and retrieve structured business details, including legal name, registration status, and business address, to automate onboarding, compliance, procurement, and verification workflows.

A RESTful API built on compliance-first verification infrastructure, designed for scalable business verification systems

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GSTIN Active

status · verified

Registration Date

22/09/2021

Business Type

Private Limited Company

VERIFICATION RESPONSE

{
"gstin": "07AAICD6574D1ZK",
"sts": "Active",
"ctb": "Private Limited"
}

Trusted by platforms building onboarding and verification workflows

Fintechs, marketplaces, NBFCs, and B2B platforms use Deepvue APIs to verify GSTINs in real time and automate KYB

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What is a GST verification API?

A GST (Goods and Services Tax) Verification API is an application programming interface that lets platforms validate GSTIN numbers and retrieve structured business registration details for any business registered under GST, including its current registration status, and feed them into automated verification and compliance workflows.

Explore API Documentation

This API is commonly referred to as

GST Verification APIGSTIN Verification APIGST Validation APIGST Number Verification API

Organizations use this API during

vendor onboarding

merchant onboarding

supplier verification

procurement validation

compliance checks

GST data enrichment

The Deepvue GST Verification API helps platforms automate verification and stop verifying GST numbers by hand, replacing manual document collection with a single GSTIN validation call.

Why GST verification matters

Businesses — from fintech lenders and NBFCs to procurement teams — need to verify a vendor's GST registration before any transaction to confirm legitimacy, reduce fraud, and stay compliant. Checking each GSTIN by hand on the government GST portal is slow and hard to scale across high onboarding volumes.

Manual GST verification is

time-consuming

error-prone

operationally expensive

Automated verification enables

faster onboarding

improved accuracy

reduced operational overhead

Ready to automate GST verification?

Validate GSTIN numbers and retrieve business data in real time.

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What this API enables

The Deepvue GST verification API enables organizations to:

Validate a GSTIN in one call

Post a 15-digit GSTIN and get back a verified result instantly, with the registry's own business record and current registration status.

Skip the GST certificate chase

Confirm a vendor's registered name straight from the registry instead of collecting and reading uploaded documents.

Block lapsed registrations at onboarding

Catch invalid or lapsed registrations by rejecting vendors whose GST has gone inactive before they ever reach your procurement queue.

Route vendors by how they're registered

Tier onboarding and tax treatment off the taxpayer details and business constitution the registry reports.

Enrich vendor records with verified address

Populate procurement and compliance systems with a registry-sourced location, no manual data entry.

Verify vendor lists in batches

Bulk verification screens whole supplier databases at once, so onboarding queues clear without manual lookups.

How the API works

From GSTIN submission to a structured, real-time JSON response over a RESTful API, in four steps.

Submit GSTIN

Submit a GSTIN number through a secure API request, authenticated with the API keys from your Deepvue dashboard.

Validate details

The verification workflow validates the GSTIN structure and returns its current registration status.

Retrieve data

Data is retrieved via authorized partner integrations and/or publicly available GST registry (GSTN) mechanisms.

JSON response

A structured JSON response with the taxpayer details is returned instantly.

The response can be integrated into onboarding, procurement, ERP, compliance, or verification systems.

GSTIN in. Business data out.

Real-time GST verification for every onboarding workflow.

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Developer preview

See how a single authenticated API call validates a GSTIN and returns structured taxpayer details and business data from the gstin-verification endpoint.

API Request

POST /v1/kyb/gstin-verification

{
  "gstin": "07AAICD6574D1ZK"
}

Input Parameters

gstin

string, GST Identification Number

API Response (Simplified)

{
  "code": 200,
  "data": {
    "gstin": "07AAICD6574D1ZK",
    "lgnm": "DEEPVUE TECHNOLOGIES...",
    "tradeNam": "DEEPVUE TECHNOLOGIES...",
    "sts": "Active",
    "dty": "Regular",
    "ctb": "Private Limited Company",
    "rgdt": "22/09/2021",
    "lstupdt": "06/06/2025",
    "pradr": {
      "addr": {
        "loc": "New Delhi",
        "pncd": "110017"
      }
    }
  }
}

Response fields

Structured taxpayer details returned for each GSTIN validation, covering legal name, registration status, taxpayer type, and the registered principal place of business.

STRING

gstin

GST Identification Number

STRING

lgnm

Legal business name

STRING

tradeNam

Trade name

STRING

sts

GST status (Active/Inactive)

STRING

dty

Taxpayer type

STRING

ctb

Constitution of business

STRING

rgdt

Registration date

STRING

lstupdt

Last updated date

OBJECT

pradr

Principal business address (nested)

These outputs confirm whether a business is registered under GST, and available fields may vary based on data availability from source systems.

Bulk GSTIN verification

The API supports bulk GSTIN verification workflows for high-volume use cases, so you can verify GST numbers instantly across large vendor lists.

Scale to millions of verifications.

Bulk GSTIN verification for enterprise onboarding workflows.

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Integration features and key capabilities

Everything you need to build, ship, and scale Goods and Services Tax (GST) verification workflows on a RESTful API.

REST API architecture

A RESTful API with standard endpoints and predictable request and response formats for easy integration.

JSON responses

Structured JSON outputs with predictable response times, designed for automation.

Sandbox environment

Test integrations with sandbox API keys from the Deepvue dashboard before production deployment.

Bulk verification support

Run high-volume workflows for verifying GST numbers across large datasets.

Audit logs

Track every verification request against your compliance requirements and for debugging.

Real-time GSTIN verification

Verify GST numbers instantly, with each GSTIN validated in real time.

Structured business data

Retrieve standardized GST and taxpayer details for downstream workflows.

Bulk GST verification

Process high-volume requests efficiently when verifying GST numbers in bulk.

Automation-ready outputs

Automate verification by integrating responses into onboarding, ERP, and compliance systems.

Compliance-ready infrastructure

Designed to help teams stay compliant, with secure data handling, audit trails, and support for regulatory workflows.

Ship GST verification faster.

Production-ready infrastructure with sandbox testing.

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Who uses this API

The GST verification API is used by NBFCs, marketplaces, procurement teams, and B2B platforms that need to validate business registrations.

Vendor onboarding platforms

Marketplaces and enterprises verifying supplier GST details to catch fraud at vendor onboarding.

Procurement teams

Organizations validating vendor GST registrations before approving invoices and purchase orders.

Merchant onboarding systems

Payment platforms and fintechs verifying merchant identity before enabling transactions.

Compliance workflows

Organizations running GST-based checks to confirm a business is registered and stay compliant.

Data enrichment platforms

Systems retrieving GST and taxpayer details to enrich CRM, ERP, and business intelligence records.

Compliance and data governance

Deepvue provides secure verification orchestration infrastructure for Goods and Services Tax (GST) data referenced from the GST Network (GSTN) registry through authorized and publicly available mechanisms.

Data is accessed through

authorized partner integrations

publicly available registry mechanisms

compliant system workflows

APIs are intended for use in

vendor onboarding

merchant verification

procurement validation

compliance workflows

Deepvue does not represent itself as a government authority, statutory body, or primary registry/database owner.

Applicable regulations

Digital Personal Data Protection Act (DPDP), 2023

Data protection & privacy

Information Technology Act, 2000

Electronic governance & cybersecurity

All API interactions are protected using API key authentication, encryption, role-based access controls, and audit logging.

Flexible API pricing

Deepvue APIs are designed to scale with your verification volume and compliance requirements.

Pricing typically depends on

monthly verification volumeAPI usage tiersintegration requirementsdeployment environment

The free GST lookup on the government portal (gst.gov.in) is manual and handles one GSTIN at a time; for organizations evaluating GST API pricing or GST verification API cost, our team provides customized pricing based on usage scale.

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Frequently asked questions

Common questions about GST verification API integration, authentication, bulk GSTIN verification, and pricing.

What is a GST Verification API?

A GST Verification API validates GSTIN numbers and retrieves structured business registration information used in onboarding and compliance workflows.

What is GSTIN verification?

GSTIN verification refers to validating a GST Identification Number and retrieving associated business details.

Can this API support bulk GST verification?

Yes. The API supports bulk GSTIN verification workflows for large datasets and high-volume onboarding.

Who uses GST Verification APIs?

Organizations such as marketplaces, enterprises, procurement teams, payment platforms, and compliance systems use GST APIs.

How accurate is GST verification data?

Verification workflows retrieve data via authorized partner integrations and/or publicly available registry sources. Data accuracy depends on source availability.

What is GST API pricing?

GST API pricing depends on usage volume, integration requirements, and deployment scale. Contact Deepvue for a custom quote.

What data fields does the GST Verification API return?

For each GSTIN, the API returns the legal name (lgnm), trade name (tradeNam), registration status (Active, Inactive, or Cancelled), taxpayer type, constitution of business, registration date, last-updated date, and the principal place of business with its location and pincode. It validates any Indian 15-digit GSTIN across all states and union territories, and these taxpayer details are drawn from publicly available GST registry (GSTN) mechanisms, so the exact fields returned can vary with source data availability.

What is a GSTIN, and what do its 15 digits mean?

A GSTIN is the 15-digit Goods and Services Tax Identification Number assigned to every business registered under GST in India. The first two digits are the state code, the next ten are the business PAN, the 13th digit is the entity number for that PAN within a state, the 14th is a default 'Z', and the 15th is a checksum used to validate the number. The Deepvue GST Verification API checks this structure before retrieving the registration record.

Which taxpayer types and business constitutions does the response cover?

The taxpayer type field distinguishes categories such as Regular and Composition dealers, while the constitution of business field reports the entity type — for example Proprietorship, Partnership, LLP, Private Limited Company, Public Limited Company, HUF, or Trust. Both are taken directly from the taxpayer's GST registration record.

How is the GST verification API authenticated?

Authentication is API-key and token based, using client credentials issued from the Deepvue dashboard — you authenticate each request with your key rather than a username or password. This keeps the application programming interface secure while letting you automate verification at scale.

How do I get a GST API key and test it in the sandbox?

Sign up on the Deepvue developer portal to get GST API access and generate your API keys — a client ID and secret — from the dashboard, then use the GST API sandbox to test GSTIN verification before going live. Integration is quick: authenticate each request with your credentials and send a POST request to the /v1/kyb/gstin-verification endpoint, then read the JSON response. Sample code and a Postman collection speed up GST API integration, and the RESTful API drops into onboarding flows, procurement systems, ERP and accounting software, third-party tools, or a mobile application.

What happens if I submit an invalid or non-existent GSTIN?

If a GSTIN fails format or checksum validation, or is not found in the GST system, the API returns an error instead of business data, so you can flag it before onboarding. Only valid, registered GSTINs return structured taxpayer details.

Can the API flag cancelled, inactive, or fake GST registrations?

Yes for cancelled and inactive registrations. The registration status field returns Active, Inactive, or Cancelled, so you can catch lapsed or cancelled GSTINs and spot invalid or non-existent GST numbers a vendor supplies during onboarding. Screening GSTINs at signup helps reduce fraud before a vendor reaches your procurement queue, though the API reports registration status rather than making a fraud judgment.

Does the GST Verification API return GST return filing status like GSTR-1 or GSTR-3B?

No. The API confirms registration status — whether a GSTIN is Active, Inactive, or Cancelled — but it does not return GST returns, filing history, or GSTR-1/GSTR-3B data. It is point-in-time registration verification, not a returns or filing tracker.

Can I verify a supplier's GSTIN before a transaction to stay compliant?

Yes. Confirming that a supplier is registered under GST and that its GSTIN is active before you raise an invoice or release a payment supports vendor due diligence and compliance checks. Verifying GST numbers up front helps you screen out unregistered or lapsed vendors and meet onboarding and compliance requirements. Note the API returns registration status, not GST return-filing data.

Why use a GST verification API instead of checking the GST portal manually?

The government GST portal (gst.gov.in) requires manual entry and CAPTCHA for every lookup. A GST verification API (application programming interface) lets you verify GST numbers instantly and at scale, and automate the check inside your ERP or onboarding flow instead of doing it by hand. Deepvue is not the GST portal or the GSTN; it accesses data through authorized partner integrations and publicly available GST registry mechanisms.

Where does the GST verification data come from, and is Deepvue the GSTN?

No. Deepvue is not the GSTN or a government authority. GST data is accessed through authorized partner integrations and/or publicly available GST registry (GSTN) mechanisms, and every request is protected with encryption, role-based access, and audit logging to help you meet compliance requirements and stay compliant with the DPDP Act, 2023 and IT Act, 2000.

Can I run a bulk GST number search and verify multiple GSTINs?

Yes. The API is built for bulk GST verification: submit a list of GST numbers and it validates each one online, returning the GSTIN status (Active, Inactive, or Cancelled) for every entry. Instead of a manual GST number search on the portal one GSTIN at a time, you can verify multiple GST numbers online programmatically, flag any invalid or fake GSTIN, and reconcile large vendor lists against a single API — effectively a bulk GST number search and verification tool for high volume.

How do I check whether a GST number is valid or fake?

Submit the GSTIN and the API checks its 15-character structure and looks up the registration record. A valid GSTIN returns the GST taxpayer's legal name and current status; an unknown or malformed number returns an error, which helps you catch a fake GST number or a lapsed registration before onboarding. It works as a programmatic GST verification tool to verify a GST number online and confirm whether the GSTIN is active at scale.

Is Deepvue a GST Verification API provider?

Yes. Deepvue offers a GST Verification API (also called a GSTIN verification API) that lets fintechs, NBFCs, marketplaces, and B2B platforms validate any Indian GSTIN and retrieve structured business registration data in real time. You authenticate with API keys from the Deepvue dashboard and send a POST request to a single REST endpoint; the API returns JSON with the legal name, trade name, registration status (Active, Inactive, or Cancelled), taxpayer type, constitution of business, registration date, and principal place of business. Data is accessed through authorized partner integrations and publicly available Goods and Services Tax (GST) registry mechanisms, so Deepvue acts as an independent verification provider and is not the GSTN or a government authority. The API also supports bulk GSTIN verification for high-volume onboarding, letting teams automate verification, confirm a business is registered under GST before a transaction, and reduce fraud without manual lookups on the GST portal.

Start verifying GSTIN numbers and business registrations instantly.

Compliance-first. Production-ready. Scalable API infrastructure.

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