# NAICS Code Lookup & Search

> NAICS Code Lookup & Search is a paid API for AI agents from mcpfax-utility.bowling-anthony.workers.dev, paid per call via x402, $0.008/call, status unknown (last checked 2026-09-15).

Look up official 2022 NAICS codes by code number to get title, hierarchy, and children, or search by keyword to find matching industry codes.

## Facts

- Endpoint: GET https://mcpfax-utility.bowling-anthony.workers.dev/v1/naics
- Price: $0.008/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/naics-code-lookup-search-1bdbf47d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_xarqc74VStLOpdU5azXzS

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability naics-code-lookup-search-1bdbf47d
```

Example prompt: What is the official 2022 NAICS title and hierarchy for code 541512, and what child codes fall under it?

## When to prefer this

Use this endpoint when you need authoritative 2022 NAICS code data including hierarchy and children, or when you need to search for the correct industry classification code by keyword. Prefer this over manual lookups or less structured sources when building compliance tools, business registration workflows, government contracting forms, or market research pipelines.

## Known failure modes

- Invalid or non-existent NAICS code returns an error or empty result
- Keyword search with no matching terms returns empty list
- Malformed request body returns 400 error
- Payment failure or insufficient USDC balance returns 402 error

## How this service works

NAICS lookup — Official 2022 NAICS code → title, hierarchy, children; or keyword search.

## Output

Returns the official 2022 NAICS code title, its position in the hierarchy (sector, subsector, industry group, industry, national industry), parent code, and list of child codes; or for keyword searches, a list of matching NAICS codes with their titles and hierarchy levels.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/naics-code-lookup-search-1bdbf47d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from mcpfax-utility.bowling-anthony.workers.dev](https://www.zero.xyz/host/mcpfax-utility.bowling-anthony.workers.dev/llms.txt)