Superchat BD Developer Platform
Integrate secure payment acceptance into your websites, mobile apps, SaaS platforms, and e-commerce stores with hosted checkouts, instant bKash/Nagad/Upay processing, and automated webhooks.
Developers enjoy a lower 5% flat platform fee on checkout payments, compared to 10% EPS / 20% Stripe for creator streaming tips.
No PCI compliance headaches. Simply request a checkout session and redirect your customers to a secure, branded checkout page.
Every event is cryptographically signed with HMAC-SHA256 (`t=...,v1=...`) to verify origin and prevent tampering or replay attacks.
Send an `Idempotency-Key` header with charge requests to safely retry network timeouts without risking duplicate customer charges.
`npm install @superchatbd/sdk` wraps every endpoint with typed requests, automatic idempotency keys, retries and webhook signature helpers.
Read the SDK reference →120 requests per minute per key, reported through `X-RateLimit-*` headers, and every request is written to your Developer Dashboard request log.
Strict prohibitions on gambling, adult content, adult toys, SMM panels, and unauthorized goods.
Read prohibited categories →How Integration Works
Generate Secret API Key
In your Developer Dashboard, create a secret API key (`sk_live_...` or `sk_test_...`).
Create a Payment Session
From your backend server, send `POST /api/v1/payments` with the charge amount, currency, and return URLs. Receive a hosted `checkoutUrl`.
Redirect Customer & Receive Webhook
Customer completes payment via bKash/Nagad/Cards. Superchat signs and dispatches a `payment.completed` event to your webhook endpoint.
Base API URLs
https://api.superchatbd.com/api/v1
https://api.superchatbd.com/openapi.json