API Integrations
Seamless API Integration Services
for Modern Businesses
Connect your systems, automate workflows, and unlock growth with tailored API integrations.
What’s Included in Our API Integration Services
Custom API Development
Tailored APIs to suit your infrastructure and business goals.
Third-Party Software Integration
Connect to CRMs, ERPs, eCommerce platforms, and more.
Real-Time Data Synchronisation
Ensure accurate, real-time data across all systems.
Secure & Compliant Integrations
GDPR-compliant practices with strong data encryption.
Legacy System Integration
Extend the lifespan of older systems through smart bridging APIs.
Enhanced Business Efficiency
Automate processes, reduce manual effort, and boost productivity.
How It Works
Our API Integration Process: Clear, Simple, Effective
Discovery & Consultation
We start with a collaborative session to define your current challenges, map out systems in use (e.g., CRMs, ERPs, databases), and identify key integration points.
Integration Mapping
Our experts architect a seamless flow of data between platforms, mapping endpoints, triggers, data fields, and sync rules to eliminate silos.
Development & Testing
Using secure APIs and custom connectors, we build the integration and rigorously test for errors, sync failures, or conflicts.
Go Live & Support
We manage a smooth rollout with minimal disruption. Our team remains on-hand for real-time troubleshooting, performance tuning, and future updates.
📞 Let’s Discuss Your Setup
Book a free 15-minute consultation to explore your integration needs and timeline.
Why Businesses Across the UK
Trust Merto for API Integrations
- Proven Expertise – Years of experience working with REST, SOAP, GraphQL, JSON, XML, and more
- Industry-Focused Solutions – Bespoke integrations tailored for sectors like eCommerce, LegalTech, FinTech, and Healthcare.
- UK-Based Support – Direct communication with our in-house technical team — no outsourcing.
- End-to-End Delivery – We handle everything from planning to post-launch support.
Testimonials
See What Our Happy Customers Say
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We went from spreadsheets and manual inputs to a fully connected system. Merto made the whole process painless and professional. The time savings are incredible.

James Holloway
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The API integration helped us connect legacy systems to our new CRM. What seemed impossible was delivered on time and without hassle. Solid team and great support.

Daniel Cooper
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We’ve worked with larger firms before, but Merto’s hands-on UK support and attention to detail were unmatched. Everything syncs perfectly now — couldn’t be happier.

Thomas Reid
Let’s Build Smarter Systems Together
Ready to streamline your operations with secure efficient API integrations? Contact our UK-based team today for a free discovery session.
Still Have Questions? We've Got Answers.
You’re curious, and that’s a good sign. Below are some of the most common questions our clients ask. If you don’t see your question here, feel free to reach out directly.
We work with REST, SOAP, GraphQL, and other modern protocols. From eCommerce APIs to ERP, CRM, and payment systems — we handle it all.
Typically between 2–6 weeks, depending on complexity. We always provide a clear timeline upfront.
Yes. We have experience bridging modern APIs with older systems using custom middleware.
Absolutely. We offer ongoing maintenance and support packages to keep your systems running smoothly.
Yes — all integrations adhere to strict security protocols and GDPR compliance requirements.