REST APIs
Connect applications through REST interfaces with defined requests, responses, and access rules. Endpoints follow the business workflow so each system can exchange the information it needs.
API DEVELOPMENT & INTEGRATION SERVICES Connect Your Systems. Build Smarter Digital Experiences.
Kkeydos provides custom API development and integration services for businesses that need their websites, mobile apps, SaaS products, and enterprise systems to work together. We design and develop APIs that enable applications to exchange data, connect third-party services, automate workflows, and support reliable digital experiences.
Clear Foundation for API Development Integration.
Kkeydos provides custom API development and integration services for businesses that need their websites, mobile apps, SaaS products, and enterprise systems to work together. We design and develop APIs that enable applications to exchange data, connect third-party services, automate workflows, and support reliable digital experiences.From REST API development and third-party API integration to legacy system connectivity and API modernization, we help businesses build practical connections between the tools and platforms they rely on.Serving businesses in Hyderabad, across India, and internationally, Kkeydos works with startups, growing businesses, and established organizations to plan API solutions around their technical and business requirements.Design and develop APIs that allow websites, mobile applications, SaaS products, and business systems to exchange data and functionality. API structure, authentication, validation, error handling, and documentation are planned around the project requirements. Connect front-end websites and mobile applications with backend services to support login, data retrieval, form submissions, notifications, payments, and other application features.
Technologies We Use.
Laravel & PHP
Build backend APIs with Laravel and PHP for business applications, SaaS products, CRM, and ERP systems. Interfaces reflect your business rules, data model, and integration requirements.
Node.js
Use Node.js for API services and event-based workflows where it fits the application. We plan service behavior around the systems involved, expected requests, and maintenance needs.
MySQL & MongoDB
Choose MySQL or MongoDB to match the information your APIs store and retrieve. The data model guides how records are organized, validated, and exchanged between connected systems.
JSON
Exchange structured information using JSON where supported by the connected systems. Agreed field formats and validation rules help applications interpret requests and responses consistently.
Webhooks
Use webhooks to notify connected systems when relevant events occur. We define the expected payloads and response handling around each platform's documented capabilities.
AWS
Plan AWS hosting for API services when it suits your infrastructure and operating requirements. Service choices reflect application demand, access needs, and the agreed deployment approach.
Third-party APIs
Connect external services through their available APIs. We review documentation, permissions, and provider limits before defining data mappings and the workflows each integration can support.
Ready to Build Something Great?
From idea to execution, we help businesses build reliable software solutions that solve real problems and drive growth. Let's discuss your next project.
Start Your ProjectOur API Development & Integration Process.
Review the business workflow
Review the business workflow, systems involved, API documentation, and access requirements.
Define data mappings
Define data mappings, endpoint behavior, authentication, error scenarios, and integration boundaries.
Develop or configure the API connection and implement the agreed workflows
Develop or configure the API connection and implement the agreed workflows.
Test valid and invalid requests
Test valid and invalid requests, permissions, response handling, and key integration scenarios.
Document the agreed interfaces and support deployment and maintenance within the project scope
Document the agreed interfaces and support deployment and maintenance within the project scope.
Portfolio and case studies
Projects we’ve brought to life.
Explore how we turn business ideas into web applications, connected platforms, and digital products. Your next project could be our next success story.
API Development & Integration
across industries.
Business-specific workflows. A shared focus on dependable software.
Healthcare
Patient portals, appointment scheduling, clinical integrations, and billing workflows. We build secure APIs and access controls that connect care teams, patients, and operational systems.
Fintech
Payment workflows, transaction processing, financial dashboards, and reporting. Our backend systems connect financial services with reliable data handling, clear permissions, and traceable operations.
E-commerce
Product catalogs, inventory, checkout, and order fulfillment. We connect storefronts, payment providers, and business tools through APIs that keep commerce operations in sync.
Education (EdTech)
Learning platforms, course delivery, assessments, and progress tracking. We build backend services that connect learners, educators, content libraries, and administrative workflows.
Real Estate
Property listings, advanced search, lead management, and booking workflows. Connected databases and APIs keep agents, property managers, and customers working with consistent information.
Logistics & Supply Chain
Shipment tracking, fleet coordination, warehouse operations, and supplier integrations. Our backend services connect logistics data and support timely updates across the supply chain.
Startups & SaaS
Multi-tenant platforms, subscription management, user accounts, and product integrations. We help teams launch their first release and evolve the backend as usage grows.
Enterprise Solutions
Internal platforms, ERP and CRM integrations, and complex approval workflows. We connect business systems through maintainable services with centralized permissions and clear data ownership.
Frequently Asked Questions About API Development Integration.
API development is the process of creating interfaces that allow software applications and services to communicate, exchange data, and use each other's functionality according to defined rules.
API integration services connect different software systems through their available interfaces so data and workflows can move between them. Examples include connecting a website to a CRM or an online store to a payment provider.
API development creates or extends an API for an application or service. API integration connects systems using existing APIs or newly developed interfaces. A project may require one or both.
Kkeydos can plan and develop REST APIs for websites, mobile apps, SaaS products, and business applications, based on the project's requirements and confirmed technical scope.
Yes, where suitable APIs, permissions, and integration options are available. The project scope defines which data is exchanged, how fields are mapped, and how errors and updates are handled.
We can integrate supported third-party APIs for payment processing, communication, maps, and other services. Availability depends on provider documentation, account access, eligibility, and technical constraints.
Often, yes. We first assess the current application's architecture, available APIs, database access, and the target system's integration options before confirming the approach.
Security is planned according to the application's risks and requirements. Depending on the project, controls may include authentication, authorization, input validation, secrets management, rate limiting, and secure logging.
API testing and documentation can be included in the agreed scope. Deliverables may cover endpoint details, request and response formats, authentication requirements, error behavior, and test results.
Timelines depend on the number of systems, API quality, data complexity, authentication requirements, testing, and error-handling needs. We provide a project-specific estimate after reviewing the scope.
Cost depends on the number and complexity of endpoints, third-party providers, data mapping, security requirements, testing, and maintenance. Kkeydos provides a tailored estimate after understanding the project.
Kkeydos is based in Hyderabad, India, and can discuss API development and integration projects with businesses in India and international markets. Project communication, delivery arrangements, and working hours are agreed during project planning.
Let’s build your next backend.
Share your goals, integrations, and technical challenges. Our team will help you plan a secure, scalable solution for your business.
info@kkeydos.com +91 95810 83083
Let’s Build Your Backend Solution
Tell us what you need, and we’ll help you get started.