Mcp Contractor License Lookup

com.mambabuiltPublished by mambabuilt.comv1.0.1Updated Nov 7, 2026

Contractor license lookup and trade lists from CA, TX, WA, OR, and LA state licensing boards.

VerifiedSTDIODesktop onlyLocation & LifestyleBusiness & Commerce

Overview

AI-generated overview

Looks up contractor licenses and lists licensed contractors by trade from the public registers of five US state licensing boards.

What you can do
  • Look up a contractor license in the public registers of California, Texas, Washington, Oregon and Louisiana
  • List licensed contractors by trade such as plumbing, roofing, HVAC, electrical or general, optionally narrowed by city or county
When to use it
Useful when checking whether a contractor is licensed in one of these five states, or when building a shortlist of licensed contractors by trade and location.
Requirements
Runs as a local npm package over stdio on a desktop machine. Requires an Apify API token supplied in the APIFY_TOKEN environment variable.
Before you install
The APIFY_TOKEN credential is required and lookups are routed through Apify, so queries are sent to that third party and may consume Apify usage or credits. Results cover only the five listed state boards and should be verified against the official register.

Installation

In SourceWeft

  1. Open Mcp Contractor License Lookup in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Desktop only via STDIO. STDIO servers start a local process, so they need the SourceWeft desktop host.

Other MCP clients

Follow the launch instructions in the repository.

README

Contractor License Lookup MCP Server

[Glama score] [MCP Registry] [npm version] [npm downloads] [license] [mcpservers.org]

[Contractor License Lookup MCP server]

An MCP server for the Mamba Labs Contractor License Search, CA, TX, WA, OR, LA actor on Apify. Give it a state and a trade to list licensed contractors, or a license number or business name to verify one. Each run reads the state licensing board's own public register.

What's Inside

What it does

Two modes:

  • list: give states and trades (for example CA and roofing), optionally cities or a county. You get one row per licensed contractor with license number, status, expiration date, classifications, owners or qualifying parties, address, and phone.
  • lookup: give lookups, one per line, for example WA | 04CONCL862CR or LA | Acadian Builders. You get the matching license with its status.

States covered: California (CSLB Data Portal lists), Texas (TDLR open data), Washington (Labor and Industries open data), Oregon (CCB open data), and Louisiana (LSLBC public search). California name and number lookups work only inside a trade list, because the CSLB license check page uses a reCAPTCHA. Each search ends with one free summary row. All of the work runs on Apify. This package is a thin client that starts the actor run, waits for it, and hands back the dataset rows.

Quick start

You need Node.js 18 or newer and an Apify account with an API token.

Add this to your Claude Desktop config (claude_desktop_config.json), Cursor, or any MCP client:

json
{  "mcpServers": {    "mamba-contractor-license-lookup": {      "command": "npx",      "args": [        "-y",        "@mambalabsdev/mcp-contractor-license-lookup"      ],      "env": {        "APIFY_TOKEN": "your-apify-token"      }    }  }}

Restart the client. The lookup_contractor_licenses tool appears.

Prerequisites

Example prompts

  • "List the licensed roofing contractors in San Diego County, California."
  • "Is Washington contractor license 04CONCL862CR active, and who are the principals?"
  • "Find licensed HVAC contractors in Austin, Texas, with their phone numbers."

Tool

lookup_contractor_licenses. One tool. Example arguments:

json
{  "mode": "list",  "states": ["CA"],  "trades": ["roofing"],  "county": "San Diego",  "max_results": "100"}

Inputs

Every buyer facing input of the actor, unchanged. Omitted inputs take the actor's own defaults. Numbers and booleans are sent as strings.

InputTypeDescription
modestringlist (default) or lookup
statesarrayCA, TX, WA, OR, LA
tradesarrayList mode. Trade words
citiesarrayList mode. Cities, searched separately
countystringList mode. County (CA, TX, OR)
business_namestringList mode: name filter. Lookup mode: one more name
lookupsarrayLookup mode. Lines such as WA | 04CONCL862CR
license_numberstringLookup mode. One more license number
active_onlystringtrue or false. Default true
include_ownersstringWashington principals. Default true
max_resultsstringRows per search, up to 5000
max_charge_usdstringOptional cost cap for the run
proxy_modestringauto or residential. Default auto

Pricing

Pay per event on Apify, billed to your Apify account. Prices in USD.

EventFree planBronzeSilverGold
license-row, per license returned$0.004$0.0038$0.0036$0.0034
apify-actor-start, per run start$0.0005$0.0005$0.0005$0.0005

Search summary rows, and skipped, blocked, and no result rows, are free.

Your keys

The actor needs no key. It reads the state boards' public registers and holds no key of any kind. Proxy traffic adds nothing to your price: Mamba Labs pays the platform costs of the run. proxy_mode is a reliability setting.

Full actor documentation

apify.com/mambalabs/contractor-license-lookup

License

MIT. See LICENSE.

Source: README.md at commit 55cd760

Tools

1

lookup_contractor_licenses

Look up contractor licenses

Look up contractor licenses, or list licensed contractors by trade, from the public registers of the California, Texas, Washington, Oregon, and Louisiana state licensing boards. mode list: give states and trades (plumbing, roofing, hvac, electrical, general, and more), optionally cities or a county, and get one row per licensed contractor. mode lookup: give lookups such as WA | 04CONCL862CR or LA | Acadian Builders and get the matching license. Each row carries license number, status, active flag, issue and expiration dates, classifications, owners or qualifying parties, address, phone, and the board source link; each search ends with one free summary row. California name and number lookups are skipped because the CSLB license check page uses a reCAPTCHA. Skipped, blocked, or empty searches come back free with a row_status saying so. A run that does not succeed is returned as an error with its run ID. Read-only; requires an APIFY_TOKEN; Apify charges per license row returned.

Parametersmodecitiescountystatestradeslookupsproxy_modeactive_onlymax_resultsbusiness_nameinclude_ownerslicense_number+1 more

Version history

2
  1. v1.0.1LatestNov 5, 2026
  2. v1.0.0Oct 25, 2026

Score

90% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

  • Reached in the last 30 days25 pts
  • Auth declared10 pts

    Declare the credential headers in the registry entry, or keep the endpoint answering the probe so its auth can be classified.

  • Tools listedRequired15 pts
  • DescriptionRequired15 pts
  • Logo10 pts
  • Documentation15 pts
  • License10 pts