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API Integration Company Based in London, UK

Unlock the seamless potential of your business with our bespoke API Integration Services. Tailored to meet your unique needs, we empower your company to thrive in the interconnected digital landscape, ensuring unparalleled efficiency and innovation.

One of the best SEO agencies in the world.

Working with Moonshot is a perfect extension of our team of Graphite.

They bring deep technical knowhow and give me comfort in their ways of working and quality, at all times, working with us and our clients. It's hard to find reliable external engineering help that delivers on time with solid architectural and engineering decisions that don't need to be redone once our team takes over the code base.

Ethan Smith. CEO, Graphite
Ethan Smith
CEO, Graphite
Teacher at Reforge
Partner Clients:
+40 projects
+26 clients
+7 years of experience
+65 specialized developers
+100 projects
+50 clients
+7 years of experience
+65 specialized developers
+100 projects
+50 clients
+7 years of experience
+65 specialized developers
+100 projects
+50 clients
+7 years of experience
+65 specialized developers

Our API Development Services

Unlike one-size-fits-all solutions, our API Development Services are meticulously crafted to align with your distinct requirements. Think of it as a bespoke solution, tailored exclusively for your business needs. Say goodbye to compromises and embrace a seamlessly integrated API experience designed just for you.

Here's what we bring to the table:

Custom API Development

Tailor-made API solutions designed exclusively for your business needs, providing unique functionalities that align precisely with your processes. This service goes beyond off-the-shelf solutions, ensuring a customized digital infrastructure that caters specifically to your requirements.

Custom API Integration

This service focuses on creating a cohesive and efficient digital ecosystem by enhancing the functionality of your applications. It differs from development as it optimizes existing processes rather than creating new ones.

Third-party API Integrations

Effortlessly incorporate external functionalities into your systems by seamlessly integrating third-party APIs. This service expedites innovation by tapping into existing solutions, offering a cost-effective and efficient alternative to in-house development.

Cloud-based API Integration

We can ensure that your business is prepared for the future by leveraging cloud technology for dynamic adaptability.

Accounting Software API Integration

This streamlines financial processes and differs from others by specifically targeting and optimizing financial workflows.

Payment Gateway API Integration

This enhances customer trust and provides a seamless payment experience tailored to your business requirements.

API Testing Automation

This service differs by automating the testing process, minimizing errors, and providing a robust quality assurance mechanism for your APIs.

Social Media API Integration

Leverage social data for targeted marketing and increase user engagement, distinguishing yourself by focusing on enhancing your brand's visibility and engagement on social platforms.

Benefits of API Integration for your company

Interaction Between Apps, Data and Devices

Seamlessly connect your business applications, ensuring efficient data exchange among devices. Enhance customer experience and streamline business processes with our integration solutions.

Cost Reduction

Optimize costs with scalable and efficient integration solutions. Our services cater to specific needs, promoting cost-effective processes for business applications, data sources, and end-users.

Decouple Service from Infrastructure

Liberate your services with scalable backend solutions. Our integration services, powered by microservices architecture, provide the scalability required for efficient business processes without infrastructure constraints.

Focusing on what is Key

Prioritize business applications and processes crucial for your industry. Our tailored integration solutions address specific needs, ensuring a focus on key business processes critical for your digital transformation.

API Integration for Ecommerce

Headless commerce with total API customization

Data synchronization for your CRM/ERP

Custom API development for mobile or web

Integrate real-time carriers and 3PL services

Complete retail and POS automation

Secure payment and merchant integration

Why Choose Us?

Tailored Unique Solutions

Every business is different. Software companies provide bespoke digital solutions, ensuring perfect alignment with specific objectives. Our services are adapted to startups in their different stages, from MVP to production. As well as established companies.

Cutting-Edge Technology

In a rapidly evolving tech world, software companies stay updated. They let you leverage the newest technologies for a competitive edge.

Continuous Support

The journey continues post-deployment. Based in London, UK, our company offers constant support, ensuring digital tools stay secure, and updated.

Some of our clients

We work with founders and companies backed by top VC funds and accelerators.

📗 Education Services

Education company that offers digital learning solutions and AI products.

London, England
Valued at 9.72 billion USD
🚀 Startup ecosystem

Global network for entrepreneurs with accelerators, investments, and resources.

Boulder, Colorado
$108.9M USD in funding
💻 E-commerce

Grove creates and curates high-performing, planet-first home, and personal care products

San Francisco, California
Valued at 1.32 billion USD
🏦 Venture capital

European venture capital firm focusing on early-stage startups.

Vienna, Austria
380 million USD in funding
⚕️ Healthcare

Primary care and concierge medicine  early-stage startup.

New York, United States
3.1 Million USD in funding
📗 Education Services

Multinational educational company and the world's largest language school network.

São Paulo, Brazil
Acquired by Pearson in 2013
📗 Education Services

Customer intelligence platform that analyses customer's feedback, support, and conversation data.

CDMX, México
34.8 million in funding - Series B
📗 Education Services

Online learning platform offering on-demand training and a dynamic content-driven platform.

Brisbane, Australia
Valued at 2.8 Billion USD
Maximize business efficiency with our personalized API Solutions
Let’s Talk

Technology behind API Development


REST API - Representational State Transfer

SOAP - Simple Object Access Protocol



REST API - Representational State Transfer

SOAP - Simple Object Access Protocol



Our approach

Discover & Define

A mapping of all the flows of the platform is carried out, to analyze and evaluate the complexity and determinate possible solutions that can be given to our problem.


Ideation of visual solutions for evaluated flows, also with rapid prototyping to test the effectiveness of these solutions. Raise front-end impact if necessary.


Implement the product solutions, optimize your systems and increase the engagement of your platform.


Efficiently maintain and continuously improve your digital product to ensure ROI and ongoing value for your customers.


MVP development
3-5 months
MVP with an innovative component to increase learner engagement
4-6 months
Creation of an eLeraning module with basic features or automation of one learning management process (e.g. performance assessment)
1-3 months
Investment payback period
0.1-0.9 years /due to high value from innovate tech)
Every 2-6 weeks
Minor changes and hotfixes
Several times a day

What our clients say about us

65+ Moonshooters from 18+ countries. Over 26 clients and 40 projects. Shooting for the moon since 2020.

Working with their dedicated team of devs has sped up our achievement of business goals and R&D.

At Go1, we place a tremendous amount of importance on our relationship with Moonshot. Our collaboration has grown over the years from being an integration partner, of which we have many, to actually working on our core product. I would recommend them to anyone who values quality and world-class delivery.

Mark Bolton
VP Growth Initiatives, Go1
Valued $23B
Insights Company
I feel they help us grow as a company to achieve our aims and objectives.

There are so many things I love about working with Moonshot, but crucially it comes down to the people and culture. Their teams feel like an extension of our team and that is exactly how I like it. I feel they help us grow as a company to achieve our aims and objectives, but also help me grow as an individual.

Benjamin Pook
Head of Product, Play Verto
Valued $23B
Insights Company

Case Studies


Boosting App Growth: Targeted Messaging for English Learning

Learn more
<The Lanby>

Product Discovery: The Lanby's Primary Healthcare Innovation

Learn more
Our team is ready to work on your challenge!

Frequently Asked Questions

What is Custom API Development, and how can it benefit my business?

Custom API Development tailors APIs to your specific needs, ensuring optimized processes, efficiency, and a competitive edge in your industry. Gain bespoke solutions crafted exclusively for your business requirements, integrating seamlessly with SaaS providers like Amazon Web Services (AWS) for enhanced scalability.

How does Cloud-based API Integration enhance scalability for my business?

Cloud-based API Integration enables scalable and flexible solutions for your digital ecosystem. Leverage cloud technology to adapt swiftly to industry trends, ensuring your business remains dynamic and future-ready. Implement connectors for seamless integration with major SaaS providers.

Why choose Third-party API Integrations for innovation and cost-effectiveness?

Third-party API Integrations expedite innovation by tapping into existing solutions, offering cost-effective alternatives to in-house development. Stay technologically relevant and enhance your service capabilities by integrating with public APIs from providers like Microsoft and Salesforce.

What sets apart API as a Service from traditional API models?

API as a Service provides a modular, on-demand approach, reshaping API solutions for heightened adaptability. Access and implement APIs based on specific business requirements, promoting agility and efficiency.

How does Payment Gateway API Integration improve customer trust and user experience?

Payment Gateway API Integration transforms payment processes for secure and frictionless transactions. Enhance customer trust, providing a seamless payment experience tailored to your business requirements. Integrate with widely used payment gateways such as PayPal and Stripe for a reliable and trusted payment solution.

What benefits does API Testing Automation bring to the development process?

API Testing Automation accelerates development cycles, ensuring reliability and minimizing errors. Instill confidence in your users with flawless digital experiences and robust quality assurance mechanisms. Utilize formats like JSON for efficient data exchange during the testing process.

How can Social Media API Integration amplify my online presence and user engagement?

Social Media API Integration seamlessly connects platforms, leveraging social data for targeted marketing and increased user engagement. Boost your brand visibility and create a stronger online community by integrating with popular social media platforms like Google Maps for location-based engagement.

How does Custom API Integration differ from Custom API Development?

Custom API Integration optimizes existing systems by seamlessly incorporating customized APIs, enhancing functionality and user experiences. It differs from development as it focuses on streamlining and enhancing current workflows. For example, integrate web APIs for enhanced connectivity between mobile apps and web applications.

What advantages does API Integration for Ecommerce offer, especially in terms of secure payment and merchant integration?

API Integration for Ecommerce ensures secure payment and merchant integration, offering headless commerce with total API customization. Enhance your retail and POS automation for a seamless customer experience, integrating with Stripe for secure and reliable payment processing.

How can API Integration Services benefit businesses in the healthcare industry?

API Integration Services streamline data exchange and connectivity in the healthcare sector, ensuring efficient processes and improved patient care. Enhance the integration of healthcare applications and data sources, promoting interoperability and seamless communication between software applications and modules.

Let's discuss your digital product ideas and needs!

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