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Notes on verifying Indian businesses.

Name: APIserver.in
Price: 10.00 INR

Practical guides on GST, PAN and MCA data, KYB workflows, and what's new in the API.

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03 Oct 20263 min readGSTguides

How a GSTIN is built — all 15 characters, decoded

State code, PAN, entity number, the reserved Z and the mod-36 check character. What each part means and how to validate a GSTIN before you ever call an API.

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02 Oct 20262 min readProductannouncements
Introducing APIserver.in — business verification with public prices
GST, PAN, MCA company data, directors and CIN↔PAN through one key and one schema. Public prices with GST included, and failed calls cost ₹0. Early access is open.

Notes on verifying Indian businesses.

How a GSTIN is built — all 15 characters, decoded

Introducing APIserver.in — business verification with public prices