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Introduction

NAICS MCP Server

An intelligent industry classification service for NAICS 2022, built with the Model Context Protocol (MCP).

What is NAICS?

The North American Industry Classification System (NAICS) is the standard used by Federal statistical agencies to classify businesses for collecting, analyzing, and publishing statistical data related to the U.S. economy.

NAICS uses a 6-digit hierarchical structure:

  • Sector (2 digits) - Broadest category (e.g., 44-45 = Retail Trade)
  • Subsector (3 digits) - Subdivision of sector
  • Industry Group (4 digits) - Subdivision of subsector
  • NAICS Industry (5 digits) - Subdivision of industry group
  • National Industry (6 digits) - Most specific classification

What is MCP?

The Model Context Protocol (MCP)Ā  is an open protocol that enables AI assistants to interact with external tools and data sources. The NAICS MCP Server exposes NAICS classification capabilities as MCP tools that can be used by AI assistants like Claude.

Key Features

  • Semantic Search - Natural language search using sentence embeddings
  • Hybrid Search - Combines semantic understanding with exact term matching
  • 20,398 Index Terms - Official NAICS index for precise matching
  • Cross-Reference Checking - Identifies exclusions to prevent misclassification
  • Classification Workbook - Track and audit classification decisions
Getting Started