Sharfin designed and built our new website to enable us to accept online payments. The new website looks amazing and navigating around it so simple compared to what we had before. Sharfin and his team have always been available when we have required any technical support or assistance.
Claude app development with payments built in
Custom apps, assistants and agents built on Claude by Anthropic, connected to your data and tools, with eCom Pay card payments ready when you want to charge for them.
Free 30 minute call. Fixed price quote before any build starts.
What is claude app development?
Claude app development means building software on the Claude API by Anthropic, such as customer assistants, internal tools and AI agents. eCom Pro designs and builds Claude apps for UK businesses, handles hosting, security and cost control, and connects eCom Pay card payments when the app needs to charge.
17+
years building for UK businesses
200+
websites and systems launched
95%
client retention
24/7
AI on your channels
Built a prototype with AI and stuck getting it live?
Getting something working in an AI builder is the easy part. Making it secure, connecting it to real data, controlling the API bill and taking payments is where most projects stall.
Book a discovery callCustom assistants
Customer or staff assistants that answer from your data and follow your rules.
AI agents
Agents that take actions in your tools, with approvals on anything that matters.
Prototype to production
We take apps built in Claude, Lovable, Bolt or Replit and make them secure and reliable.
Cost control
Prompt caching, model choice and usage caps so the API bill stays predictable.
Payments built in
Subscriptions, pay per use or one off payments through eCom Pay, specialist sectors welcome.
Hosting and support
UK hosting, monitoring and a team that maintains it after launch.
How claude app development works with eCom Pro
Discovery call
What the app needs to do and who will use it.
Spec and quote
A written spec and a fixed price before any build starts.
Build in stages
Working versions you can try every week or two.
Launch and support
Live, monitored and maintained, with payments switched on when you are ready.

See it working on this website
The assistant in the corner of this page runs on Claude and knows eCom Pro and eCom Pay inside out. It answers in seconds, takes details when someone wants a call, and sends the conversation to our team. That is the kind of thing we build.
Done all our website. It now accepts payments and it was very complex. Reachable at all sorts of odd hours, and had a very simple journey with sharfin. Highly recommend them and their expertise.
Sharfin was an absolute pro. Took time to really try to understand our needs and propose solutions which fit our budget and timescales. He made smart suggestions without being pushy but improving the plan so we didn't waste time or resources on things we don't need.
We use AI in our own business every day, so we know what it does well and where it needs a person. Every AI project starts with a free discovery call and a fixed quote before any work begins.
Claude app development questions
Why build on Claude?
Claude is strong at following detailed business rules, reading long documents and writing in a natural tone, which suits most customer and staff facing apps. We will say so if another model suits your project better.
Can you finish an app I started in an AI builder?
Yes. We take apps started in Claude, Lovable, Bolt, Replit or similar and make them secure, connected and ready for real users.
Can the app take card payments?
Yes. eCom Pay card payments, subscriptions and pay by link can be built in, including for sectors mainstream processors restrict.
How do you keep API costs down?
Prompt caching, choosing the right model for each task and usage caps per user. You see the running cost in a dashboard.
What does a Claude app cost to build?
It depends on the scope. Every project starts with a free discovery call and a fixed quote before any build starts.
Book your free AI discovery call
Thirty minutes on how your business runs. You get a written plan and a fixed price before anything is built.