Connect Applications & Unlock New Possibilities
Create secure, custom APIs that integrate applications, streamline data exchange, and drive innovation with tailored solutions from expert developers.

Why Choose Custom API Development?
APIs (Application Programming Interfaces) are the backbone of modern software, enabling applications to communicate and share data seamlessly. Custom APIs empower businesses to extend their functionalities, unlock new possibilities, and create innovative solutions.
Benefits of Custom API Development:
Designed for Future Growth
Provide the engine to extend your application across platforms with a common backend
Extended Functionality
Improved Collaboration
Enhanced Customer Engagement
Increased Agility
New Revenue Streams
Our Custom API Development Services
We offer a comprehensive suite of custom API development services, including:
API Design and Development
We design and develop custom APIs tailored to your specific requirements, ensuring optimal performance and security.
API Integration
We integrate your applications with third-party APIs, extending their functionality and access to external services.
API Documentation
We provide comprehensive API documentation to facilitate seamless integration and developer understanding.
Our Development Process

Listen & Discuss
We will meet to help specify your needs and wants. During these meetings, we provide our own recommendations and solutions. Discussing these ideas with you helps us better understand what you need. From there, we refine our plan by putting it in writing. This helps us avoid misunderstandings and missing features. When a plan is put into writing, we often think of new ideas.

Build, Test, & Review
We start with building mockups, which allow us to talk through the user experience and again allow ourselves to further refine the workflow and processes. Once the mockups are approved, we develop your software. Following our initial tests, you'll have the chance to review and test too. During this process, we will make adjustments and revisions accordingly. Reviewing and adjusting allows us to quickly implement solutions for your application.

Release
We've made it through the development process, where you finalized options and ideas, approved recommendations, and were a part of every major decision. Now it's time for release, and you don't need to worry. You will understand how it works and how to use it, because you helped build it. Our agile process is the key to providing you with a product that you love, faster and with fewer problems.
Why Choose Modgility?
Experienced API Developers
Our team comprises skilled developers with extensive experience in API design, development, and integration.
Agile Development Methodology
Client-Focused Approach
Security-First Approach
Custom Software Development Pricing
It depends. We carefully craft a solution that balances your requirements, the business needs and your budget.
Because we develop your custom software based on considering all of these factors, solutions vary. However, we can give you a few guidelines:
We bill for "our time." Our time is in quotes because not every minute of our team’s time is billed, only that spent on your project.
Your success is our success and our goal is to be your valued long term partner. We aim to create solutions that provide immediate value to your business. After we discuss your needs, we will provide solution options that align with your business goals, objectives and budget.
We understand that pricing is an important factor - We would love to talk to you about your needs and provide a quote.

API Development Services FAQ's
An API (Application Programming Interface) is a system that allows applications to communicate and exchange data. API development is the process of designing and building these connection points so that software systems can work together. APIs are essential today because modern applications rarely operate in isolation. They need to interact with databases, third-party services, payment providers, analytics platforms, or mobile apps. By exposing structured, secure endpoints, APIs enable seamless integrations, reduce duplication of effort, and provide clearly defined pathways for innovation.
There are several common types: RESTful APIs (the most widely used, with simple endpoints for web and mobile applications), GraphQL APIs (allowing precise queries and fewer data transfers), SOAP APIs (still prevalent in legacy systems, often in industries like banking or insurance), and WebSocket APIs, which provide real-time communication for applications like chat, streaming, or IoT devices. Each type is suited for different needs, ranging from interoperability with older systems to high-performance, real-time use cases.
Good API design emphasizes consistency, security, and usability. Endpoints should follow predictable naming conventions, responses must be structured and standardized (usually in JSON), and clear error codes should be provided. Security is critical — APIs should require authentication/authorization, encrypt data in transit, and use rate limiting to prevent abuse. Documentation is another critical element, as effective APIs must be clear for developers to adopt and extend.
APIs make it possible for businesses to scale by exposing functionality for reuse across multiple applications. For example, a payments API developed for a business’s ecommerce site could also be consumed by mobile apps, partner systems, or future products. This reusability accelerates development of new features and allows partnerships without rewriting code. APIs are often the foundation of platforms, enabling ecosystems of connected services (like Stripe, Shopify, or Salesforce).
Before releasing any API, it must undergo testing for functionality, security, performance, and edge cases. Automated tools simulate various requests, monitor load under heavy traffic, and validate compliance with standards. Once live, APIs must be versioned carefully so updates don’t break integrations. Monitoring tools watch for uptime, latency, and usage. Logs are analyzed to detect suspicious activity or misuse. Maintenance includes updating documentation, optimizing performance, and deprecating outdated endpoints in a way that gives users time to adapt.