Plumbline - Contractor License Checks

ai.agentlookups/plumblineVersion 1.0.1

Free contractor-license checks from official state records; a no-match never proves unlicensed.

Status

Responds366 msNov 14, 2026, 13:26 UTCAnswered our handshake without sign-in.

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Last checked: Nov 14, 2026, 13:26 UTC
Latency: 366 ms
Remotes responding: 1 of 1
Sign-in: No sign-in
Hosting: Hosted outside the EU (detected)
Registry data as of: Nov 14, 2026, 22:14 UTC

Data from the official MCP Registry, checked by run.zero. How we check

Connect

Streamable HTTP

https://contractors.agentlookups.ai/mcpResponds366 msNov 14, 2026, 13:26 UTC

No sign-in

Claude Code

claude mcp add --transport http plumbline https://contractors.agentlookups.ai/mcp

Claude Desktop and claude.ai

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Settings > Connectors > Add custom connector
Name: plumbline
Remote MCP server URL: https://contractors.agentlookups.ai/mcp

Cursor

{
  "mcpServers": {
    "plumbline": {
      "url": "https://contractors.agentlookups.ai/mcp"
    }
  }
}

VS Code

code --add-mcp '{"name":"plumbline","type":"http","url":"https://contractors.agentlookups.ai/mcp"}'

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Tools

1 tools

Tools of Plumbline - Contractor License Checks
	Description		Read-only	Idempotent	Open world
`check_contractor`Looks 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 agency. The set of covered jurisdictions changes as sources are added, so this description does not list it. Inputs: a record number (license) or business name, with optional jurisdiction and exact listed city, or an entity_id from an earlier result, which selects that one record. Results: match (the credential record with its status and provenance); candidates (several records fit; each page holds up to 20 rows, total_candidates is the full count, offset pages through the rest, and entity_id selects one; a field with the same value on every row of a page is given once, in same_for_all_rows, and each row's entity block omits what the row already states); no_match_in_index (the index holds no record for that input, which does not mean the contractor is unlicensed; for a search across all jurisdictions, the message states how many covered jurisdictions were searched); or jurisdiction_not_covered (the requested jurisdiction is outside the index, with an official pointer URL where one is on file; the response message states exactly what the link is, or that none is on file, and for some jurisdictions the link is a consumer-protection or licensing-board page, not a license lookup). A name or city search sent with no jurisdiction that names a state outside the index ("Smith Plumbing Atlanta GA") answers candidates carrying not_covered (that state's not-covered answer, which also opens the message) when covered records fit the rest, and jurisdiction_not_covered when none do; those rows are records from other places. A name ending in a covered state's code that is also a word or short f	Looks 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 agency. The set of covered jurisdictions changes as sources are added, so this description does not list it. Inputs: a record number (license) or business name, with optional jurisdiction and exact listed city, or an entity_id from an earlier result, which selects that one record. Results: match (the credential record with its status and provenance); candidates (several records fit; each page holds up to 20 rows, total_candidates is the full count, offset pages through the rest, and entity_id selects one; a field with the same value on every row of a page is given once, in same_for_all_rows, and each row's entity block omits what the row already states); no_match_in_index (the index holds no record for that input, which does not mean the contractor is unlicensed; for a search across all jurisdictions, the message states how many covered jurisdictions were searched); or jurisdiction_not_covered (the requested jurisdiction is outside the index, with an official pointer URL where one is on file; the response message states exactly what the link is, or that none is on file, and for some jurisdictions the link is a consumer-protection or licensing-board page, not a license lookup). A name or city search sent with no jurisdiction that names a state outside the index ("Smith Plumbing Atlanta GA") answers candidates carrying not_covered (that state's not-covered answer, which also opens the message) when covered records fit the rest, and jurisdiction_not_covered when none do; those rows are records from other places. A name ending in a covered state's code that is also a word or short f	No	Yes	Yes	No

Details

Registry status: Active
Published: Aug 26, 2026
Updated: Aug 26, 2026
Website: https://contractors.agentlookups.ai/⁠ (opens in a new tab)
Repository: Not given
Categories: Uncategorized
GDPR: Not declared

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