AppFunBD

REST API Development & Integration Services

Your mobile app, website, and business tools need to talk to each other. We design and build secure, well-documented REST APIs with Laravel and FastAPI, and integrate third-party APIs like payment gateways, SMS providers, CRMs, and social platforms into your existing systems.

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What Our REST API Development & Integration Includes

Everything you get when you work with AppFunBD.

Custom REST APIs

Clean, versioned API endpoints designed around your data and business rules.

Mobile App Backends

Reliable backends for Android, iOS, and Flutter apps with authentication and push notifications.

Token Authentication

Laravel Sanctum, JWT, and API key security with rate limiting and access control.

Third-Party Integrations

Payment gateways, SMS gateways, Google, Facebook, WhatsApp, and courier APIs.

API Documentation

Postman collections and Swagger/OpenAPI docs so your team can integrate quickly.

High-Performance Python APIs

FastAPI services for data-heavy, AI, and high-throughput workloads.

How It Works

A simple, transparent process from first call to launch.

  1. API Design

    We define endpoints, request/response formats, and authentication together.

  2. Build & Test

    Endpoints built with validation, error handling, and automated tests.

  3. Documentation

    Full Postman or Swagger documentation delivered with the code.

  4. Deploy & Monitor

    Deployment with logging so issues are caught before your users notice.

Tools & Technologies

What we use to deliver REST API Development & Integration.

  • Laravel
  • Laravel Sanctum
  • JWT
  • FastAPI
  • Python
  • MySQL
  • Postman
  • Swagger

Frequently Asked Questions

Common questions about our REST API Development & Integration.

Can you build the backend API for my mobile app?

Yes. We build complete API backends for Android, iOS, and Flutter apps, including authentication, file uploads, and notifications.

Do you integrate payment gateways like bKash or SSLCommerz?

Yes, we integrate local and international payment gateways including bKash, Nagad, SSLCommerz, and Stripe.

Will the API be documented?

Every API we deliver includes Postman collections or Swagger/OpenAPI documentation.

Laravel or FastAPI — which should I choose?

Laravel is ideal for business applications with complex logic; FastAPI suits Python, AI, and high-throughput services. We recommend the right fit for your project.

Other services that pair well with REST API Development & Integration.

Bulk SMS & SMS API Service

Reliable bulk SMS service in Bangladesh — masking and non-masking SMS, OTP and transactional alerts, promotional campaigns, and SMS gateway API integration for websites, apps, and CRMs.

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Need REST API Development & Integration?

Tell us what you need and we'll get back with a scope and quote within 24 hours.

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