Look up the live GST registration for a GSTIN: legal name, trade name, status, taxpayer type, constitution of business, registration date, and registered address. Every call queries the GST network in real time — nothing is served from a cache. Set include_profile for jurisdiction codes, e-invoicing status, nature of business, and additional places of business at no extra cost.

Every GSTR-1 / GSTR-3B (and other type) return a GSTIN filed in the given financial year, with period, filing date, status, and ARN.

The return filing history summarised per return type: filed count, last period filed, months since it, and average filing lag from period end. Facts only — no on-time percentage or defaulter flag is computed; apply your own thresholds, keeping in mind a quarterly (QRMP) filer legitimately shows multi-month gaps.

Whether the taxpayer files Monthly or Quarterly (QRMP), quarter by quarter, for the given financial year.

Matches a GSTIN to its probable company in the MCA registry. IMPORTANT: this match is probabilistic, not authoritative — no government dataset publishes a GSTIN-to-CIN mapping, so this is a scored guess from company-name similarity plus weak corroborating signals, returned with a high/medium/low confidence band. Never present the result as a confirmed fact; tell the user it is a probable match and point them to mca.gov.in to verify anything with legal, financial, or compliance consequence.

The official description for a 2-8 digit HSN (goods) or SAC (services) code, plus the chapter/heading/subheading it sits under. No GST rate is returned — the government's own master publishes no rate column, and a rate depends on more than the code alone.

Find HSN/SAC codes from a free-text description. Exact code matches rank first, then descriptions starting with the term, then descriptions containing it.

Direct company-master lookup by CIN (Corporate Identification Number) from India's ~3.67M registered companies (source: data.gov.in RoC-wise Company Master Data, refreshed roughly quarterly). Company master fields only — no directors, charges, filings, or financial statements.

Fuzzy company-name search over the MCA registry, optionally filtered by state and status, paginated.

How many calls this API key has made today. Free — does not consume a credit.