RegCheck MCP Server — Connector Documentation
RegCheck is a vehicle registration lookup API covering 50+ countries, operated by Infinite Loop Development Ltd since 2004. This connector exposes RegCheck’s lookup capability as an MCP tool, allowing Claude to look up vehicle details — make, model, colour, fuel type, engine size, and more — directly within a conversation.
Getting Started
1. Create a RegCheck account
If you don’t already have a RegCheck account, sign up at regcheck.org.uk. Your RegCheck username and password are used to authenticate with the MCP server.
2. Connect to Claude
In Claude, go to Settings → Connectors → Add custom connector and enter:
https://regcheckmcp-526628810409.europe-west2.run.app/mcp
Click Connect. Claude will redirect you to the RegCheck MCP sign-in page. Enter your RegCheck username and password and click Sign in. You will be redirected back to Claude automatically.
The connector uses OAuth 2.1 with PKCE. Your password is never stored by the MCP server — it is used only to verify your RegCheck account at sign-in time.
3. Enable the connector in your conversation
Once connected, enable the RegCheck connector via the + button at the start of a conversation. You can then ask Claude to look up any vehicle registration plate.
Example Prompts
- “What can you tell me about the car with plate AB12 CDE?”
- “Look up German plate M-AB 1234 for me.”
- “What fuel type is French registration AA-123-BB?”
- “Check the MOT status of UK plate LD21 ABC.”
- “What model is Australian plate ABC123 in Victoria?”
Claude will invoke the lookup tool automatically when a registration plate is mentioned in context.
Supported Countries
The connector supports vehicle registration lookups in 50+ countries, including:
| Region | Countries |
|---|---|
| Europe | United Kingdom, Ireland, Germany, France, Spain, Italy, Netherlands, Belgium, Poland, Portugal, Sweden, Norway, Denmark, Finland, Austria, Switzerland, Czech Republic, Romania, Hungary, and more |
| Americas | United States (all states), Canada, Brazil, Argentina, Mexico, Chile, Colombia |
| Asia-Pacific | Australia (all states), New Zealand, Malaysia, Indonesia, Taiwan |
| Middle East & Africa | South Africa, UAE |
For the full list of supported countries and country codes, see regcheck.org.uk.
Countries requiring a state or region parameter
Some countries require a state or province code in addition to the plate number. When Claude asks for a state, provide the standard abbreviation — for example:
- Australia: NSW, VIC, QLD, WA, SA, TAS, ACT, NT
- USA: CA, TX, NY, FL, etc.
- Canada: ON, BC, QC, AB, etc.
- Brazil: SP, RJ, MG, etc.
Available Tools
lookup_vehicle
Looks up vehicle registration details for a given plate and country.
| Parameter | Description |
|---|---|
registration | The vehicle registration plate number |
country | Two-letter ISO country code (e.g. GB, DE, FR, AU) |
state | State or province code — required for USA, Australia, Canada, Brazil |
Returns: Vehicle details including make, model, year, colour, fuel type, engine size, and any country-specific fields such as MOT/NCT status, tax status, or emissions data.
This tool is read-only — it performs a lookup only and does not modify any data.
Authentication
The RegCheck MCP Server uses OAuth 2.1 with PKCE (Proof Key for Code Exchange).
- No passwords are stored by the MCP server
- Access tokens are valid for 1 hour and are signed with HMAC-SHA256
- The server is stateless — no session data is retained between requests
- All traffic is over HTTPS
OAuth endpoints
| Endpoint | URL |
|---|---|
| Authorization | https://regcheckmcp-526628810409.europe-west2.run.app/authorize |
| Token | https://regcheckmcp-526628810409.europe-west2.run.app/token |
| Discovery | https://regcheckmcp-526628810409.europe-west2.run.app/.well-known/oauth-authorization-server |
Pricing & Usage
Usage is billed against your RegCheck account. Each vehicle lookup consumes one credit. Credits can be purchased at regcheck.org.uk. New accounts receive a small number of free credits to get started.
Support
For questions about the connector or your RegCheck account:
- Website: regcheck.org.uk
- Email: info@infiniteloop.ie
- Technical blog: blog.dotnetframework.org
For issues specific to the MCP connector, please include the country code and a sanitised (last 3 characters removed) version of the plate number in your support request.
Privacy Policy
The RegCheck MCP Server is operated by Infinite Loop Development Ltd.
Data collected by this connector:
| Data | Purpose | Retained |
|---|---|---|
| RegCheck username | Authenticate API requests | Not stored — used at sign-in only |
| Vehicle registration plate | Perform the lookup | Not stored — passed to RegCheck API and discarded |
| Country / state code | Route the lookup to the correct endpoint | Not stored |
What we do not collect:
- Conversation content
- Claude prompt text
- IP addresses beyond standard GCP Cloud Run access logs (retained 30 days)
- Any data beyond what is necessary to perform the lookup
Third parties: Lookup requests are forwarded to the RegCheck API at regcheck.org.uk, operated by Infinite Loop Development Ltd. No data is shared with any other third party.
Full privacy policy: infiniteloop.ie/privacypolicy.html
Data controller: Infinite Loop Development Ltd, Ballyliffin, Co. Donegal, Ireland. Contact: info@infiniteloop.ie
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