NAICS/SIC Code Lookup — Industry Classification Codes

Created By

easysolutions9064 months ago

Look up NAICS 2022 and SIC industry codes. 2,133 NAICS codes, 1,498 SIC codes, keyword search, and crosswalk mappings. Required for business loans, insurance, tax filings.

# naics

# sic

Overview Content Tools Comments

Overview

MCP NAICS/SIC Server

A Model Context Protocol (MCP) server for looking up NAICS 2022 and SIC industry codes with keyword search, sector browsing, and NAICS-to-SIC crosswalk mapping.

Tools (4 total)

Tool	Description
`naics_lookup`	Look up a NAICS code with title, hierarchy, children, and SIC crosswalk
`naics_search`	Search NAICS codes by keyword (e.g., "software", "restaurant")
`sic_lookup`	Look up a SIC code with title, hierarchy, children, and NAICS crosswalk
`sic_search`	Search SIC codes by keyword

Install

npx @easysolutions906/naics-api

Claude Desktop

Add to your claude_desktop_config.json:

{
  "mcpServers": {
    "naics": {
      "command": "npx",
      "args": ["-y", "@easysolutions906/naics-api"]
    }
  }
}

Cursor

Add to .cursor/mcp.json:

{
  "mcpServers": {
    "naics": {
      "command": "npx",
      "args": ["-y", "@easysolutions906/naics-api"]
    }
  }
}

REST API

Set PORT env var to run as an HTTP server.

GET /lookup?code=541511 -- look up a NAICS code
GET /search?q=software -- search NAICS codes by keyword
GET /sector/:code -- list all codes in a NAICS sector
GET /sic/lookup?code=7372 -- look up a SIC code
GET /sic/search?q=software -- search SIC codes by keyword
GET /crosswalk?naics=541511 -- NAICS to SIC crosswalk
POST /lookup/batch -- batch lookup NAICS or SIC codes

Data Source

NAICS 2022 codes from the US Census Bureau. SIC 1987 codes from the Standard Industrial Classification system. NAICS is revised on a 5-year cycle (next: 2027). SIC has not been updated since 1987. Run npm run build-data to regenerate.

Transport

stdio (default) -- for local use with Claude Desktop and Cursor
HTTP -- set PORT env var to start in Streamable HTTP mode on /mcp

Try in Playground

Server Config

{
  "mcpServers": {
    "naics": {
      "command": "npx",
      "args": [
        "-y",
        "@easysolutions906/naics-api"
      ]
    }
  }
}

Project Info

Created At

4 months ago

Updated At

4 months ago

Author Name

easysolutions906

Star

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License

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