How to Verify a Contractor Before Hiring with Claude
Verify a Contractor Before Hiring with Claude and ToolRouter. Check registration, trading history, and accreditations before signing any contract.
Tool
Claude is ideal when contractor verification is part of a broader risk assessment. You can run the checks and get a clear opinion on whether any red flags should affect your decision — not just a raw data dump.
Connect ToolRouter to Claude
1Open connector settings Open Settings
2Add a custom connector with these details
Name
ToolRouterURL
https://api.toolrouter.com/mcp3Let Claude set you up Open Claude
Steps
Once connected (see setup above), use the Construction Manager tool:
- Give Claude the contractor's company name, registration number if you have it, and the type of work they are being hired for.
- Ask Claude to run `verify_company` via the construction-manager tool.
- Have Claude review the results and flag any concerning indicators — recent incorporation, director changes, dissolved related companies.
- If you do not yet have a contractor, ask Claude to run `find_local_tradesmen` to find vetted options for the trade you need.
- Use Claude's assessment to make a confident hire or avoid a risky one.
Example Prompt
Try this with Claude using the Construction Manager tool
Use construction-manager to verify BuildRight Ltd, company number 12345678, who I am considering hiring for a £40,000 extension. Check their registration status, trading history, and any red flags. Tell me whether there is anything in the data that should give me pause.
Tips
- Always check the company number, not just the trading name — contractors sometimes operate similar names across multiple entities.
- Ask Claude to flag recent incorporation dates — a company less than two years old is a higher risk on a large job.
- Ask for accreditation verification relevant to the work type — gas safe, NICEIC, FMB — not just company registration.