Provider organization: ManTech
GST Calculation API
Deterministic GST calculation for a single amount (exclusive or inclusive). Not GST filing or GSTN integration.
Authentication
Developer Console API key as Authorization: Bearer on https://mantechstudio.in/api/v1. Console keys do not authenticate /external/v1.
Capabilities
- GST
- CGST
- SGST
- IGST
Known limitations
- Deterministic tax math only. Not GSTN, GST filing, e-invoice, or GSTIN verification.
Endpoints
- POST/api/v1/gst/calculate
Access and quota
TEST · TEST
1,000 requests per UTC day per application + environment (shared across certified /api/v1 families)
Burst limiter plus daily quota. TEST is not unlimited.
Production · LIVE
Not a self-serve checkout. Request production access.
Not published as a public SLA.
There is no self-serve checkout. Production access is request-only. TEST keys are not production access. Quota is enforced by the gateway per application + environment, not by this page.
Gateway
Same-origin Firebase Hosting /api/v1. Developer keys are verified and quota is metered on the website gateway function. IFSC execution is ManTech API Platform. GST/HSN/SAC still execute in website functions until those slices migrate. Quota is per application + environment, not a separate per-API subscription object.