Plumbline - Contractor License Checks
Free contractor-license checks from official state records; a no-match never proves unlicensed.
Connect it
Settings → Connectors → Add custom connector
URL: https://contractors.agentlookups.ai/mcpSettings → Apps & Connectors → Advanced → Developer mode
Create connector with URL: https://contractors.agentlookups.ai/mcp{
"mcpServers": {
"plumbline": {
"url": "https://contractors.agentlookups.ai/mcp"
}
}
}claude mcp add --transport http plumbline https://contractors.agentlookups.ai/mcp{
"servers": {
"plumbline": {
"type": "http",
"url": "https://contractors.agentlookups.ai/mcp"
}
}
}1 tools, verified live
check_contractorread-onlyLooks up a contractor's public credential in indexed state and local licensing records. Licenses, registrations and bond records mean different things. Each record carries a credential object (kind, label, note): kind is license, registration, business_license or bond when the source makes that clear; otherwise it is the generic "credential", and the note says what to verify with the issuing agenc
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