Was instructed on phone to post my question here (I’m new). I’m an Accountant creating useful tools for my clients, one being a key dates generator. I’m vibe coding using Claude. Currently the client enters their own Ltd Company year end. I want to use my API code to enable the real-time information held at Companies House to ensure accuracy. What are the terms when using the code in vibe coding. Have checked many certs but conscious of giving UK code to essentially US based company.
You should be fine using Claude or similar tools for prototyping, but I’d strongly recommend keeping your Companies House API key server-side rather than embedding it directly into prompts or frontend code.
A safer setup is:
Frontend
→ your backend/proxy
→ Companies House API
That way:
-
your API key stays private
-
you can add caching/rate limits
-
you avoid exposing credentials publicly
-
you retain control if you later change providers
The bigger concern is not really “using UK code with a US AI company”, it’s accidentally sharing:
-
production secrets
-
client data
-
financial information
-
proprietary workflows
inside AI chats or repos.
Using AI to help generate integration code is generally fine — just treat it like working with a junior developer:
helpful for scaffolding, but keep credentials and sensitive data isolated.
Also worth checking Companies House API terms around redistribution/caching depending on how much company data you plan to surface commercially.