AZRIVA Software Development Company Ahmedabad
API Development Company · India

API Development Company REST APIs, GraphQL and Third-Party Integrations. Fixed Price.

We build custom REST APIs, GraphQL APIs, and third-party integrations powering Flutter mobile apps and enterprise systems — payment gateways, WhatsApp Business API, OpenAI and Gemini AI APIs, CRM integrations, and high-performance backend APIs. Node.js, Python, FastAPI. Fixed price. Direct engineer access. DPDP compliant.

Get Fixed-Price Proposal See Our Work View Case Studies
★★★★★ Rated by clients
|
✓ REST and GraphQL — Mobile-First API Architecture
|
✓ Payment Gateway — Razorpay, Stripe, PhonePe
|
✓ WhatsApp Business API Integration
|
✓ OpenAI GPT-4o and Gemini API Middleware
|
✓ Production-Grade Error Handling and Retry Logic
|
✓ DPDP Compliant API Architecture
100+
Projects Delivered
55+
Happy Clients
100%
On-time Delivery
15+
Years of Expertise
20+
Technologies
Why AZRIVA for API Development

An API Development Company That Engineers for Production — Not Just for Demos

Most API failures in production are not architectural failures — they are reliability failures. Third-party API integrations built without retry logic fail silently when external services are momentarily unavailable. Payment gateway integrations without proper webhook verification accept fraudulent callback requests. OpenAI API integrations without token cost controls generate bills that grow faster than business value. Rate limiting not implemented from day one creates vulnerabilities that attackers discover before your team does. These are not edge cases — they are standard production conditions that every API faces within weeks of launch.

We build APIs engineered for production reliability from the first sprint — exponential backoff retry logic for all third-party API calls, circuit breakers preventing cascade failures when external APIs degrade, webhook signature verification for every payment and communication callback, rate limiting protecting all endpoints, token cost controls and response caching for AI API integrations, and real-time monitoring alerting before failures become user-facing incidents. Every Flutter mobile app API we build is optimised for mobile networks — response payload sizes minimised, pagination designed for smooth mobile scrolling, and offline-first sync endpoints for low-connectivity environments.

We integrate any third-party API your business requires — Razorpay, Stripe, PayU, PhonePe, and PayPal for payments; WhatsApp Business API and Twilio for communications; OpenAI GPT-4o, Google Gemini, and Anthropic Claude for AI capabilities; Salesforce, HubSpot, and Zoho for CRM; Shiprocket and Delhivery for logistics; Google Maps Platform for location; and custom legacy system APIs via secure middleware layers. Our AI API integration services include production-grade middleware with token cost controls, DPDP-compliant data minimisation, and automated usage monitoring built in. Every API we deliver includes DPDP Act Phase 1 compliance for all personal data processing.

Why do businesses across USA, UK, Canada, Germany and India choose AZRIVA for API development? Fixed-price delivery — endpoints, authentication, third-party integrations, documentation, and deployment at one agreed price. Direct access to the backend engineers building your APIs on WhatsApp or Slack every working day. No account managers. Full OpenAPI documentation, Postman collections, environment credentials, and source code transferred on completion.

Start Your Project.

Fixed-price proposal within 48 hours.

NDA signed before every project discussion.

Mobile App Development Services

API Development Services — Every One Fixed Price

From custom REST APIs and GraphQL APIs to payment gateway integration, WhatsApp Business API, AI API middleware, Flutter mobile app connectivity, and legacy system integration — every API development service delivered at a fixed price with direct engineer access, DPDP compliance, and 60-day post-launch monitoring.

01

REST API Development

Custom RESTful APIs built with consistent naming conventions, proper HTTP method usage, standardised error responses, comprehensive input validation, JWT and OAuth 2.0 authentication, rate limiting, and full OpenAPI documentation generated automatically. Every REST API built to production standards from the first sprint — no shortcuts that become production debt.

Node.js · Python · FastAPI · OpenAPI Docs
02

GraphQL API Development

Flexible GraphQL APIs with Apollo Server — schema-first design, type-safe resolvers, query depth limiting, real-time subscriptions via WebSockets, DataLoader for N+1 query prevention, and field-level permissions for role-based data access. Ideal for Flutter apps needing precise data fetching on cellular networks.

GraphQL · Apollo Server · DataLoader · Subscriptions
03
AI-Powered

AI API Integration — GPT-4o, Gemini, Claude

Production-grade middleware connecting your APIs to OpenAI GPT-4o, Google Gemini, Anthropic Claude, and custom ML model endpoints — token cost controls, rate limiting, response caching, streaming response handling, DPDP-compliant data minimisation in AI API payloads, and usage cost dashboards. AI API integration that is cost-efficient, reliable, and DPDP compliant from the first production call.

OpenAI API · Gemini · Claude · Token Cost Controls
Learn more →
04

Payment Gateway and WhatsApp Business API

Razorpay, Stripe, PayU, PhonePe, and PayPal payment gateway integration with webhook signature verification, idempotency key handling, refund management, and partial payment recording. WhatsApp Business API integration with template message approval, webhook handling, and delivery tracking. Production-grade implementations tested with real transactions.

Razorpay · Stripe · WhatsApp Business API · Webhooks
05

Flutter Mobile App API Engineering

REST and GraphQL APIs engineered specifically for Flutter Android and iOS app connectivity — optimised response payloads minimising data transfer on mobile networks, cursor-based pagination for smooth mobile scrolling, offline-first sync endpoints for low-connectivity environments, push notification APIs for Firebase Cloud Messaging, and real-time WebSocket endpoints for live features. Mobile-first API design from day one.

Flutter Optimised · Offline-First Sync · FCM Push · WebSockets
06

API Security and DPDP Compliance

JWT token-based authentication, OAuth 2.0 for delegated authorisation, API key management for service-to-service calls, HTTPS enforcement, rate limiting, input sanitisation, SQL injection prevention, and industry-standard API security best practices. DPDP Act Phase 1 compliance for all personal data processed through API endpoints. Security testing completed before production deployment.

JWT · OAuth 2.0 · Rate Limiting · DPDP Compliant
07

Production-Grade API Architecture — Retry Logic, Fallbacks and Real-Time Monitoring

Every third-party API integration we build includes exponential backoff retry logic, circuit breakers preventing cascade failures when external APIs degrade, fallback responses maintaining functionality when integrations are unavailable, webhook verification preventing spoofed callbacks, and real-time integration health monitoring alerting before failures become user-facing incidents. Our AI API integration middleware includes token cost controls and DPDP-compliant data minimisation as standard. Every Flutter mobile app API we build is tested against real mobile network conditions before delivery.

83%
All web APIs now use REST architecture — making production-grade REST API development a critical business capability (RapidAPI Survey 2025)
$391.3B
Global mobile app market by 2026 — every mobile app depends on production-reliable API backends (Mordor Intelligence)
60 Days
Post-launch API monitoring, integration health dashboards, and performance tracking included as standard on every project
Tools & Technologies

Technologies We Use for API Development

Battle-tested API development stacks — Node.js and Python backends, GraphQL and REST frameworks, authentication libraries, third-party integration SDKs, and cloud infrastructure chosen for production reliability and long-term maintainability.

Backend and API
Node.jsPythonFastAPIExpressApollo ServerGraphQL
Backend / API
Authentication and Security
JWTOAuth 2.0Passport.jsHelmetRate LimiterOWASP
Auth / Security
Integrations and AI
RazorpayStripeWhatsApp Business APIOpenAI APIGeminiTwilio
Integrations / AI
Database and Infra
PostgreSQLRedisMongoDBAWS API GatewayDockerGitHub Actions
Database / Infra
Why Businesses Choose AZRIVA

Why Poor API Architecture Breaks Mobile Apps and Business Systems

The three most common API development failures that cost businesses revenue, users, and compliance standing — and exactly how we solve each one.

01
The Problem

APIs Built Without Mobile Optimisation Destroy Flutter App Performance

APIs designed for web browsers return oversized payloads, require multiple sequential calls to populate a single mobile screen, and do not handle cellular network conditions gracefully. Flutter apps calling poorly designed APIs load slowly, drain battery, fail on intermittent connections, and feel sluggish compared to native apps — frustrating users into abandoning the app regardless of how well the Flutter UI is built.

01
Our Solution

Mobile-First API Architecture — Optimised for Flutter and Cellular Networks

We build REST and GraphQL APIs engineered specifically for Flutter mobile app connectivity — optimised response payloads minimising data transfer, cursor-based pagination for smooth mobile scrolling, offline-first sync endpoints supporting apps in low-connectivity environments, and real-time WebSocket endpoints for live features. Work with our mobile app development team for APIs and Flutter apps built together from architecture.

02
The Problem

Third-Party API Integrations Without Error Handling Cause Production Failures

Payment gateways go down. WhatsApp Business API rate limits get hit. OpenAI API timeouts happen under load. Third-party API integrations built without retry logic, circuit breakers, fallback handling, and dead letter queues cause cascading failures in production — payments do not complete, messages are not sent, and AI features fail silently when users need them most.

02
Our Solution

Production-Grade Integration Architecture — Retry Logic, Fallbacks and Monitoring

Every third-party API integration we build includes exponential backoff retry logic, circuit breakers preventing cascade failures, fallback responses maintaining functionality when integrations are unavailable, webhook verification preventing spoofed callbacks, and real-time integration health monitoring. Our AI API integration services include OpenAI and Gemini middleware with token cost controls and rate limit management built in.

03
The Problem

Unsecured APIs Expose Business Data and Fail Compliance Requirements

APIs without proper authentication, rate limiting, and input validation are the most common attack vector for data breaches in mobile and web applications. An unsecured API endpoint returning customer records or financial data without proper JWT validation, role-based access control, and rate limiting creates serious security and DPDP Act compliance exposure.

03
Our Solution

Industry-Standard API Security and DPDP Compliance Built Into Every API

We implement JWT authentication, OAuth 2.0, HTTPS enforcement, rate limiting, input validation, SQL injection prevention, and industry-standard API security best practices on every API we build. DPDP Act compliance for all personal data processed through API endpoints implemented from architecture stage. Work with our API development team to get security and compliance built in from day one.

REST vs GraphQL vs gRPC

REST vs GraphQL vs gRPC — Which Is Right for Your Business?

Choosing the right API architecture affects performance, flexibility, developer experience, and long-term maintainability. Here is how we evaluate the right approach for every API engagement.

MOST CHOSEN

REST API

Resource-based API architecture — well-understood, widely supported, easy to cache and CDN-distribute, and compatible with every client platform including Flutter, React, and third-party integrations. HTTP caching reduces server load significantly. Best for most business APIs with clearly defined resources.

Best for: Most business APIs and third-party integrations

GraphQL

Query language allowing clients to request exactly the data they need — reduces over-fetching and under-fetching, single request for complex data relationships, and strong typing with automatic schema documentation. Best for Flutter mobile apps with complex data needs and multiple interconnected entities.

Best for: Complex mobile apps with flexible data needs

gRPC

Binary protocol for high-performance service-to-service communication — significantly faster than REST for internal microservice communication, strongly typed protobuf contracts, and bidirectional streaming. Best for internal microservices where performance matters more than human readability.

Best for: Internal microservices and high-performance backends
Criteria
REST API (Recommended)
GraphQL
gRPC
Flutter Mobile Support
Excellent — native HTTP support
Excellent — graphql_flutter
Limited — grpc_flutter alpha
Caching
HTTP caching — CDN compatible
Client-side caching only
No standard caching
Learning Curve
Low — widely understood
Medium — schema design needed
High — protobuf and tooling
Third-Party Integration
Universal — all services support REST
Requires REST wrapper often
Service-to-service only
Documentation
OpenAPI — widely tooled
GraphQL introspection
Protobuf schema
Real-Time Features
WebSocket alongside REST
Native subscriptions
Native bidirectional streaming
DPDP Compliance
Built in — AZRIVA standard
Built in — AZRIVA standard
Built in — AZRIVA standard
Best For
Most APIs — default choice
Complex mobile data needs
Internal microservices

Not sure which technology suits your product? We will assess your requirements and recommend the right stack — at no charge.

Get a Free Tech Consultation →
Want a detailed comparison? Read: AI Integration in Mobile Apps — Full Guide →
Pricing

API Development Cost in India

Transparent fixed-price tiers for custom API development — REST APIs, GraphQL APIs, third-party integrations, and AI API middleware. Every tier includes authentication, documentation, and DPDP compliance.

01
Standard REST or GraphQL API
Custom REST or GraphQL API with 20 to 30 endpoints, JWT authentication, input validation, rate limiting, basic third-party integration (payment gateway or WhatsApp), and OpenAPI documentation.
20–30 EndpointsJWT AuthPayment GatewayOpenAPI Docs
$1,000 – $5,000
Fixed price · Starting from
MOST POPULAR
02
Full-Featured API Platform
Complete API platform with 50+ endpoints, multiple third-party integrations, AI API middleware (OpenAI or Gemini), WebSocket real-time endpoints, Flutter mobile optimisation, DPDP compliance, and Postman collections.
50+ EndpointsAI API MiddlewareWebSocketsFlutter Optimised
$5,000 – $15,000
Fixed price · Starting from
03
Enterprise API Platform
Enterprise API platform with complex workflow automation, multiple AI API integrations, microservice architecture, advanced monitoring, high-availability infrastructure, and enterprise security compliance.
MicroservicesMulti-AI IntegrationHigh AvailabilityEnterprise Security
$15,000 – $50,000
Fixed price · Starting from
04
Custom API Scope
Bespoke API requirements — legacy system API wrappers, regulated industry compliance architecture, real-time streaming APIs for high-frequency data, or complex multi-tenant API platforms.
Legacy WrappersRegulated IndustryReal-Time StreamingMulti-Tenant

All prices are starting-from estimates in USD. Final fixed price confirmed after API requirements mapping and integration scoping. Every tier includes authentication, rate limiting, DPDP compliance documentation, OpenAPI documentation, and 60-day post-launch monitoring. Request a fixed-price API development quote.

Build Your Custom API
at a Fixed Price.

REST APIs, GraphQL APIs, and third-party integrations for Flutter mobile apps and enterprise systems — payment gateways, WhatsApp Business API, OpenAI and Gemini integration, DPDP compliance, and full source code ownership. Scoped, priced, and delivered in full.

Reach Out Now
+91 96389 24757
Get a Fixed-Price API Development Quote
Our Process

Our API Development Process

A structured 7-step API development process from discovery and architecture through to deployment, documentation handover, and DPDP compliance sign-off.

01

API Discovery and Architecture Design

Data flows, integration requirements, mobile app connectivity needs, and third-party API dependencies mapped. REST or GraphQL architecture selected. Authentication strategy, rate limiting, versioning, and documentation standards agreed. Fixed-price scope produced before development begins.

02

Tech Stack and Infrastructure Selection

Right backend selected — Node.js with Express or Fastify for high-throughput APIs, Python with FastAPI for ML-integrated endpoints, AWS API Gateway for serverless deployment. Database layer, caching strategy, and queue infrastructure designed before any code is written.

03

API Development and Endpoint Build

RESTful or GraphQL endpoints built with consistent naming conventions, proper HTTP method usage, standardised error responses, comprehensive input validation, and full OpenAPI or GraphQL schema documentation generated automatically from sprint one.

04

Third-Party Integration Development

Payment gateways, WhatsApp Business API, OpenAI and Gemini AI APIs, CRM webhooks, shipping APIs, and all required third-party integrations built with exponential backoff retry logic, circuit breakers, webhook verification, and fallback handling as standard.

05

Security Testing and DPDP Compliance

JWT and OAuth 2.0 authentication, rate limiting, industry-standard API security best practices, input sanitisation, and penetration testing completed. DPDP Act compliance for all personal data processed through API endpoints verified before production deployment. Load testing run against agreed traffic targets.

06

Deployment and Documentation Handover

Live deployment to AWS, Google Cloud, or your preferred infrastructure with API monitoring, error logging, usage analytics, and automated alerts. Full OpenAPI documentation, Postman collections, environment credentials, and source code handed over in full.

07

Post-Launch API Monitoring and Support

60-day post-launch monitoring as standard — API error rate dashboards, integration health tracking for all third-party APIs, performance benchmarking against agreed SLAs, DPDP compliance updates as regulations evolve, and security patches for dependencies. Long-term API maintenance retainers for endpoint additions, new integrations, and performance optimisation as usage scales.

AI-Integrated Industry Apps

Industry-Specific API Development & Integration

We deliver AI solutions for APIs and system integrations across the industries where reliable data exchange between platforms, third-party service connectivity, and real-time inter-system communication form the backbone of digital operations — healthcare, logistics, and automotive.

AI-POWERED

Healthcare API Development & Integration

We build healthcare APIs and system integrations — HL7 FHIR-compliant patient data APIs, EMR and HIS integration layers, insurance claim processing APIs, telemedicine platform APIs, laboratory result delivery APIs, and pharmacy system integrations — connecting disparate healthcare systems with secure, standards-compliant data exchange that maintains clinical data integrity.

REST API HL7 FHIR Healthcare EMR Integration HIPAA-Aware
Explore Healthcare Industry Development
01
AI-POWERED

Logistics API Development & Integration

We build logistics APIs and system integrations — carrier rate and booking APIs, shipment tracking webhook systems, warehouse management system APIs, customs and compliance data APIs, freight marketplace integration layers, and last-mile delivery platform APIs — connecting logistics platforms with carriers, customs systems, and customer-facing tracking interfaces.

REST API Webhooks Logistics Carrier API Tracking
Explore Logistics Industry Development
02
AI-POWERED

Automotive API Development & Integration

We build automotive APIs and system integrations — vehicle telematics data APIs, dealer management system integration layers, OBD-II and CAN bus data processing APIs, connected vehicle platform APIs, automotive parts catalogue APIs, and fleet management system integrations — connecting vehicles, dealer networks, and automotive service platforms with standardised, reliable data exchange.

REST API Automotive Telematics OBD-II Fleet API
Explore Automotive Industry Development
03
The AZRIVA Difference

Why Businesses Choose AZRIVA for API Development

From fixed-price delivery to production-grade AI API middleware — here is exactly what makes our API development different from every other backend team in India.

AZRIVA mobile app development team — Ahmedabad, India
AI-Powered
Production-Grade AI API Middleware

AI API Integration — OpenAI GPT-4o, Gemini and Claude

We integrate OpenAI GPT-4o, Google Gemini, Anthropic Claude, and custom ML model APIs with production-grade middleware — token cost controls, rate limiting, response caching, streaming response handling, fallback handling, and DPDP-compliant data minimisation in AI API payloads. AI API integration that is cost-efficient, reliable, and compliant from the first production call.

Fixed Price
No Open-Ended Backend Billing

Fixed Price API Development Delivery

Every API development project is scoped and priced in full before development begins — endpoints, authentication, third-party integrations, documentation, and deployment all included at a fixed price. No time-and-materials billing for endpoint additions discovered mid-project, no surprise charges for integration complexity, no additional fees for API documentation that should be standard.

IST Overlap
Direct API Engineer Access

IST Timezone — USA and UK Client Overlap

Our Ahmedabad API engineering team works IST with deliberate overlap into USA EST mornings and UK GMT afternoons. Direct access to the backend engineers building your APIs during your working hours — not next-day email replies from an account manager who has never seen your API schema or integration requirements.

NDA Protected
Full Source Code Ownership

NDA — Full API Source Code Ownership

Every engagement starts with a mutual NDA. Full source code, OpenAPI documentation, Postman collections, environment configurations, API credentials, and all intellectual property transfer to you on project completion. No ongoing licensing fees, no infrastructure dependency, no lock-in to AZRIVA backend services of any kind.

AZRIVA software development team Ahmedabad — mobile app development
Hire a Trusted Mobile App Development Team in India
We build scalable Android, iOS, and Flutter applications for startups and businesses worldwide.
Google UX Design Certified Team · 15+ Years Experience · India-Based Development Team
Get a Free Consultation
What Makes Our APIs Different

What Makes Our API Development Better Than Every Competitor

Every app we build is engineered for performance, security, and long-term scalability — not just to pass QA.

AZRIVA API development team — REST GraphQL Flutter Ahmedabad India
01

Mobile-First API Architecture — Engineered for Flutter and Cellular Networks

We build REST and GraphQL APIs engineered specifically for Flutter Android and iOS app connectivity — optimised response payloads minimising data transfer on cellular networks, cursor-based pagination designed for smooth mobile scrolling, offline-first sync endpoints supporting apps in low-connectivity environments, push notification APIs for Firebase Cloud Messaging, and real-time WebSocket endpoints for live data features. Every API tested against real Flutter HTTP client libraries before delivery.

Node.js · Python · FastAPI · Apollo · AWS
02
99.9%
Integration uptime target

Production-Grade Third-Party Integration — Retry Logic, Circuit Breakers and Monitoring

Third-party API integrations built without retry logic and circuit breakers are production liabilities waiting to fail. Every integration we build includes exponential backoff retry logic for transient failures, circuit breakers preventing cascade failures when external APIs degrade, webhook signature verification preventing spoofed callbacks, dead letter queues for failed requests requiring manual review, and real-time integration health monitoring alerting before failures become user-facing incidents.

03

Google-Certified API UX — Documentation Developers Actually Want to Use

API developer experience is a UX discipline. Our Google UX Design Professional Certified team designs API documentation, error messages, and Postman collections that developers understand immediately — consistent error response structures, clear HTTP status code usage, practical code examples for Flutter, React, and Node.js clients, and Postman collections covering every endpoint and edge case. APIs that integrate quickly reduce your integration support burden significantly.

Google · Professional Certified
04

API Security and DPDP Compliance Built Into Every Endpoint

JWT token-based authentication, OAuth 2.0 for delegated authorisation, HTTPS enforcement, rate limiting with configurable thresholds per user tier, input sanitisation preventing injection attacks, role-based endpoint access control, and DPDP Act Phase 1 compliance for all personal data processed through API endpoints — built into API architecture from the first sprint, not audited after production deployment.

05

AI API Middleware — Token Cost Controls and DPDP Compliance

OpenAI GPT-4o, Google Gemini, and Anthropic Claude API integration with production-grade middleware — token cost controls preventing runaway API costs during traffic spikes, response caching reducing redundant AI API calls, streaming response handling for real-time text rendering, rate limiting, fallback handling when AI APIs are slow, and DPDP-compliant data minimisation excluding personal data from API payloads before they leave your infrastructure.

Token Controls · Response Caching · DPDP Data Minimisation
06

Post-Launch API Monitoring and 60-Day Support Standard

APIs in production require continuous monitoring — error rates, latency percentiles, integration health for each third-party API, cache hit rates, rate limiting trigger frequency, and AI API token costs. 60-day post-launch monitoring as standard with dashboards, alerts for error rate spikes, and integration health degradation. Long-term API maintenance retainers for endpoint additions, new integrations, and performance optimisation.

Our Work

API and Software Projects We Have Delivered

From our portfolio of 100+ delivered APIs and mobile applications — real REST APIs, third-party integrations, and backend systems built for clients across India, UK, USA, Canada and internationally. Every project delivered at a fixed price with full source code ownership.

Luxury Property Rental Platform — Spain
Travel & Hospitality

Luxury Property Rental Platform — Spain

A full-stack luxury vacation rental marketplace built for a UK-based hospitality client — property discovery with geospatial map search under 45ms, automated Stripe escrow payments, host onboarding, and a 98/100 Lighthouse performance score. Delivered in 14 weeks at a fixed price with 300% revenue growth post-launch.

Next.js 15TypeScriptTailwind CSSPostgreSQLCloudflareStripe
View Case Study
B2B Manufacturer Dealer Portal — Built for Indian Manufacturer
Manufacturing

B2B Manufacturer Dealer Portal — India

A custom three-module B2B dealer ordering portal built for an Indian manufacturer — replacing WhatsApp and spreadsheet order management with automated dealer management, tier-based pricing, GST invoicing, and real-time dispatch tracking. Multi-state dealer network. Delivered in 20 weeks under NDA.

ReactNode.jsMongoDBTailwind CSSRazorpayAWS
View Case Study
View All Case Studies
Technology Stack

Technologies & Services We Work On

We use the right technology for each project — battle-tested stacks chosen for performance, scalability, and long-term maintainability.

Mobile App Development — AZRIVA
Mobile
App Development
AI & ML Solutions — AZRIVA
AI
AI & ML
Solutions
Website Development — AZRIVA
Website
Development
E-Commerce Development — AZRIVA
E-Commerce
Development
Platform & APIs — AZRIVA
Platform
& APIs
Software Solutions — AZRIVA
Software
Solutions
Industries We Serve

API Development for Every Industry

We build REST APIs, GraphQL APIs, and third-party integrations for healthcare, fintech, logistics, real estate, ecommerce, education, enterprise, and SaaS clients across India, USA, UK, Canada and Germany.

1 / 7
01

FinTech App Development

FinTech App Development | Mobile App Development Company India — AZRIVA
  • · AI Solutions for Personal Finance Apps
  • · UPI & Digital Wallet Integration
  • · Buy Now Pay Later (BNPL) Platforms
  • · Crypto & Investment Portfolio Apps
  • · Real-Time Fraud Detection Systems
Explore Solutions
02

Healthcare App Development

Healthcare App Development | Mobile App Development Company India — AZRIVA
  • · AI Solutions for Symptom Checker & Telemedicine Apps
  • · Wearable Health Data Integration
  • · Mental Health & Wellness Platforms
  • · Remote Patient Monitoring Systems
  • · Doctor On-Demand Booking Apps
Explore Solutions
03

EdTech App Development

EdTech App Development | Mobile App Development Company India — AZRIVA
  • · AI-Personalised Learning Platforms
  • · Live Tutoring & Cohort-Based Apps
  • · AR/VR Classroom Experience Apps
  • · Microlearning & Skill Development Apps
  • · Corporate LMS Mobile Applications
Explore Solutions
04

Travel & Hospitality App Development

Travel & Hospitality App Development | Mobile App Development Company India — AZRIVA
  • · AI Solutions for Travel Itinerary Planner Apps
  • · Hotel & Experience Booking Platforms
  • · Real-Time Flight & Transit Tracker Apps
  • · Hyper-Local Tour Guide Apps
  • · Travel Safety & Emergency Alert Apps
Explore Solutions
05

Food & Restaurant App Development

Food & Restaurant App Development | Mobile App Development Company India — AZRIVA
  • · AI Solutions for Food Recommendation Apps
  • · Cloud Kitchen Management Platforms
  • · QR-Based Contactless Ordering Apps
  • · Subscription Meal Delivery Apps
  • · Restaurant Staff & Inventory Apps
Explore Solutions
06

Logistics & Supply Chain App Development

Logistics & Supply Chain App Development | Mobile App Development Company India — AZRIVA
  • · Real-Time Fleet & GPS Tracking Apps
  • · AI Route Optimisation Platforms
  • · Last-Mile Delivery Management Apps
  • · AI Solutions for Warehouse & Inventory Mobile Apps
  • · Driver & Field Force Management Apps
Explore Solutions
07

Retail & eCommerce App Development

Retail & eCommerce App Development | Mobile App Development Company India — AZRIVA
  • · AI Solutions for AR Virtual Try-On Shopping Apps
  • · AI Product Recommendation Engines
  • · D2C Brand Mobile Commerce Apps
  • · Loyalty & Gamified Rewards Apps
  • · Omnichannel Retail Management Apps
Explore Solutions
08

Real Estate App Development

Real Estate App Development | Mobile App Development Company India — AZRIVA
  • · AI Solutions for Property Valuation & Search Apps
  • · Virtual & 3D Property Tour Apps
  • · Rental Management & Tenant Apps
  • · PropTech Investment Platforms
  • · Agent CRM & Lead Management Apps
Explore Solutions
09

Government & Smart City App Development

Government & Smart City App Development | Mobile App Development Company India — AZRIVA
  • · Citizen Service & e-Governance Apps
  • · Smart City IoT Dashboard Apps
  • · Public Grievance Management Apps
  • · AI Solutions for Emergency & Disaster Alert Apps
  • · Digital Identity & e-Document Apps
Explore Solutions
10

Media & Entertainment App Development

Media & Entertainment App Development | Mobile App Development Company India — AZRIVA
  • · AI Solutions for OTT Streaming with DRM Protection
  • · Short-Form Video & Creator Platforms
  • · Live Event & Concert Streaming Apps
  • · Podcast & Audio Content Apps
  • · Fan Engagement & Community Apps
Explore Solutions
11

Agriculture & AgriTech App Development

Agriculture & AgriTech App Development | Mobile App Development Company India — AZRIVA
  • · AI Solutions for Crop Disease Detection Apps
  • · Precision Farming & IoT Sensor Apps
  • · Farmer-to-Market Direct Trade Apps
  • · Weather & Soil Advisory Apps
  • · Government Scheme & Subsidy Apps
Explore Solutions
12

Automotive & Mobility App Development

Automotive & Mobility App Development | Mobile App Development Company India — AZRIVA
  • · EV Charging Station Finder Apps
  • · Connected Car & OBD2 Integration Apps
  • · Ride-Sharing & Fleet Management Apps
  • · AR-Powered Vehicle Service Apps
  • · Dealer & Inventory Management Apps
Explore Solutions
13

Semiconductor & Electronics App Development

Semiconductor & Electronics App Development | Mobile App Development Company India — AZRIVA
  • · AI Solutions for IoT Device Control & Monitoring Apps
  • · Smart Factory Floor Management Apps
  • · Component Inventory Tracking Apps
  • · Embedded System Diagnostic Apps
  • · PCB Design Collaboration Tools
Explore Solutions
14

Energy & Utilities App Development

Energy & Utilities App Development | Mobile App Development Company India — AZRIVA
  • · AI Solutions for Smart Meter & Energy Monitoring Apps
  • · Solar & Renewable Energy Dashboard Apps
  • · Field Technician Management Apps
  • · Utility Bill Payment & Management Apps
  • · Grid Fault Detection & Alert Apps
Explore Solutions
From Our Blog

API Development and Integration Insights

Practical guides from AZRIVA's engineering team — written for CTOs and product teams planning API-first architectures and third-party integrations.

How to Integrate AI Into Your Mobile App — Complete Guide — AZRIVA Insights
AI

How to Integrate AI Into Your Mobile App — Complete Guide

A straight-talking guide to AI integration in mobile apps — covering use cases, implementation approaches, cost expectations, and how to add AI features to an existing app without starting from scratch.

AI IntegrationMobile App
Read Article
Custom Software vs Off-the-Shelf — Which is Right for Your Business? — AZRIVA Insights
Software

Custom Software vs Off-the-Shelf — Which is Right for Your Business?

A straight-talking comparison of custom software vs off-the-shelf solutions — covering total cost of ownership, flexibility, integration capability, and which approach delivers better long-term value for growing businesses.

Custom SoftwareSoftware Development
Read Article
How Long Does Mobile App Development Take? — 2026 Timeline Guide — AZRIVA Insights
Mobile App

How Long Does Mobile App Development Take? — 2026 Timeline Guide

A realistic breakdown of mobile app development timelines — covering every phase from discovery to App Store launch, with honest estimates for simple, mid-complexity, and enterprise-grade apps.

Mobile AppApp Development
Read Article
View All Articles
Client Testimonials

What Clients Say About Our API Development in India

Real feedback from businesses we have built custom APIs, third-party integrations, and mobile app backends for — across India, USA, UK, Canada, Australia and internationally.

"
The Android app with DRM-protected content streaming was exactly what we needed. Widevine integration worked perfectly from day one. The team understood our requirements completely and delivered without compromise.
Spiritual Platform Client
GuruTattva App, India
Technical Leader
Ahmedabad, India
Ahmedabad, India
"
The Flutter app delivered for our field team works flawlessly even in low-connectivity areas. Offline sync was exactly what we needed. Post-launch support has been excellent.
Enterprise Client
Confidential — NDA
Chief Technology Officer
Mumbai, India
Mumbai, India

Why Clients Trust AZRIVA as Their API Development Company in India

Businesses across USA, UK, Canada, Germany, Australia and India choose AZRIVA for API development because we combine mobile-first API architecture, production-grade third-party integrations, and industry-standard API security practices with transparent fixed pricing and direct engineer access. Unlike larger API development companies in India that route communication through account managers, every AZRIVA client works directly with the backend engineers building their APIs. Our custom API development process — from discovery and architecture design through endpoint development, security testing, DPDP compliance verification, and full documentation handover — is designed to deliver production-ready APIs on time, within budget, and built specifically for Flutter mobile app or enterprise system integration requirements.

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Senior Engineers. Startup Agility.
Transparent Execution.

We are a highly technical API development team helping startups and growing businesses build custom REST APIs, GraphQL APIs, and third-party integrations with direct communication, fixed pricing, and long-term technical support.

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+91 96389 24757
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FAQ

API Development and Integration — Common Questions

Honest answers from our API development team in India — covering REST APIs, GraphQL, third-party integrations, costs, timelines, DPDP compliance and more.

Updated May 2026
API development is the process of building Application Programming Interfaces — the connection layers that allow different software systems, mobile apps, and third-party services to communicate and exchange data securely. Custom API development for mobile apps creates endpoints that Flutter apps call to retrieve and submit data, integrations connecting your systems to payment gateways and third-party services, and backend services powering the business logic your applications depend on. REST and GraphQL are the two dominant API architectures used in modern mobile and web development.
Custom API development cost in India depends on the number of endpoints, complexity of business logic, third-party integrations required, and whether AI API integration is included. A standard REST API with 20 to 30 endpoints, JWT authentication, and database integration starts from $1,000. A mid-complexity API platform with 50+ endpoints, multiple third-party integrations, payment gateway, and WhatsApp Business API starts from $5,000. Enterprise API platforms with AI integration and complex workflow automation start from $15,000. AZRIVA provides a fixed-price quote after mapping your API development cost India requirements.
REST APIs are right for most projects — well-understood, widely supported, easy to cache, and compatible with every client platform including Flutter, React Native, web, and third-party integrations. REST is recommended when you have clearly defined resources and standard CRUD operations. GraphQL is right when your clients need flexible data queries — particularly useful for Flutter mobile apps needing to fetch precisely the data required in a single request, reducing over-fetching on cellular networks. AZRIVA recommends the right architecture after mapping your specific data and integration requirements. Contact our REST API development company India team for a free consultation.
Yes. We build REST and GraphQL APIs engineered specifically for Flutter API development India — optimised response payloads minimising data transfer on mobile networks, pagination and cursor-based loading for smooth infinite scroll, offline-first sync endpoints supporting Flutter apps in low-connectivity environments, push notification APIs for Firebase Cloud Messaging, and real-time WebSocket endpoints for live data features. Every API we build for mobile is tested against Flutter HTTP client libraries before delivery.
We integrate payment gateway APIs including Razorpay, Stripe, PayU, PhonePe Business, and PayPal. Communication APIs including WhatsApp Business API, Twilio SMS, SendGrid email, and Firebase push notifications. AI API integration services India including OpenAI GPT-4o, Google Gemini, Anthropic Claude, and AWS Bedrock. Mapping APIs including Google Maps Platform and Mapbox. Shipping APIs including Shiprocket, Delhivery, and FedEx. CRM APIs including Salesforce, HubSpot, and Zoho. Any custom third-party API your business requires.
We implement JWT token-based authentication for stateless API security development India, OAuth 2.0 for third-party delegated authorisation, API key management for service-to-service authentication, HTTPS enforcement on all endpoints, rate limiting preventing brute force and DDoS attacks, input validation and sanitisation preventing injection attacks, role-based access control restricting endpoint access by user type, and industry-standard API security best practices. APIs handling sensitive data are additionally tested with automated security scanning before production deployment.
Yes. All API development we deliver from 2025 onwards is architected with India Digital Personal Data Protection Act Phase 1 compliance built in. APIs collecting, processing, or transmitting personal data require data minimisation in request and response payloads, purpose limitation on data processing endpoints, audit logging for all personal data access, retention controls, and consent verification for data collection endpoints. Secure data handling implemented as standard. Contact our DPDP compliant API development India team for a compliance consultation.
Indian API development companies deliver REST API, GraphQL, and third-party integration expertise at 60 to 70 percent lower cost than US or UK agencies. AZRIVA specifically builds APIs for mobile-first deployments — REST and GraphQL backends engineered specifically for Flutter Android and iOS app connectivity alongside enterprise system integration. Direct engineer access, IST timezone overlap with USA and UK working hours, fixed-price delivery, DPDP compliance built in, and a proven track record of APIs and mobile apps delivered for clients across USA, UK, Canada, Germany and India. Learn more about our API development company India capabilities.
A standard REST API with 20 to 30 endpoints, authentication, and basic third-party integration takes 6 to 10 weeks. A mid-complexity API platform with 50+ endpoints, multiple integrations, and AI API middleware takes 10 to 16 weeks. Enterprise API platforms with complex workflow automation and high-availability infrastructure take 16 to 24 weeks. Every timeline is confirmed in the fixed-price scope after API requirements mapping. Contact our API development team for a scoped timeline.
Yes. Full OpenAPI 3.0 documentation is generated automatically from every REST API we build — endpoint descriptions, request and response schemas, authentication requirements, error codes, and rate limiting details documented for every endpoint. Postman collections covering all endpoints with example requests and environment configurations included. For GraphQL APIs, complete schema documentation with type definitions and example queries is delivered. Developer documentation and integration guides for Flutter, React, and Node.js client implementations are delivered as standard alongside the API source code. Contact our API documentation team India for details.
Yes. We build API middleware layers connecting your existing software, mobile apps, and enterprise systems to any third-party service — payment gateways, CRM platforms, communication APIs, shipping providers, AI services, and custom business-specific integrations. Middleware includes data transformation between your system's data format and the third-party API's requirements, authentication management, error handling with retry logic, and monitoring dashboards tracking integration health. Contact our API integration services India team to discuss your specific integration requirements.
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