POST two pincodes, a weight and a COD flag. Get back an accurate, GST-aware shipping charge in one response.
Total shipping charge
Trusted by India's fastest-moving commerce & logistics teams
20
Pincodes synced from India Post
<50ms
p99 rate response
99.9%
Uptime SLA
5
Shipping zones, fully configurable
Punch in any two Indian pincodes and see the exact charge our API returns, computed by the very same engine your integration will call.
Real engine, real numbers
Every quote here is the live /v1/rates response, never a mockup.
Zones, COD, fuel & GST
Billable weight, zone mapping and surcharges, itemised.
20 pincodes
Serviceability for every serviceable Indian pincode, synced from the official India Post directory.
A developer-first API with the dashboard, docs and reliability you'd expect from Stripe, built for Indian logistics.
Sign up and generate a domain-restricted key in seconds. Live and test environments included.
Send pickup + delivery pincode, weight, dimensions and payment type. One request, one JSON response.
Render an accurate, GST-aware shipping charge at checkout, with zone, ETA and breakdown included.
Predictable JSON, typed SDKs, idempotency keys, and a response that already includes the zone, ETA, GST and a full charge breakdown.
curl https://api.postpin.creatibyte.in/v1/rates/calculate \
-H "Authorization: Bearer pk_live_..." \
-H "Content-Type: application/json" \
-d '{
"origin": "400001",
"destination": "110001",
"weight": 1200,
"service": "express",
"cod": false
}'Not just a calculator. A full logistics-pricing platform with the data, controls and analytics behind it.
A nightly sync pulls the official data.gov.in India Post directory: new and updated pincodes land automatically, with a full, audited log of every run.
Map states, districts and pincode ranges into unlimited zones. Deterministic origin × destination resolution, effective-dated for reproducible quotes.
Build weight-slab rate cards per zone and assign negotiated pricing per company. Draft, simulate, then publish.
Restrict keys to domains (incl. wildcards), IP allowlists and referer/origin checks. Rotate and revoke instantly.
Calls over time, success vs blocked, top endpoints, latency percentiles and peak hours, all in your dashboard.
Subscribe to rate, key, billing and sync events with signed payloads, delivery logs and replay.
Every night at 00:30 IST, Postpin pulls the official India Post directory, diffs it against your database, and inserts or updates pincodes automatically — with a full, audited log of every run and failure alerts to email or Slack. No more stale CSVs.
Total pincodes
20
New
+12
Updated
318
Removed
3
Start free. Scale to millions of calls. Pay only for what you ship.
“Postpin replaced three courier rate sheets with one API call. Checkout shipping estimates went from minutes to milliseconds.”
Aarav Sharma
Head of Engineering, FlipMart
“The India Post sync alone saved us a monthly data ops nightmare. Pincodes are just always current now.”
Deepa Menon
CTO, Velocity Couriers
“Per-customer rate cards let us onboard B2B clients with negotiated pricing without touching code.”
Karan Patel
Founder, Gully Grocery
1,000 free rate calls every month. No credit card. Upgrade when you grow.