# Orthogonal SIC Code Classifier

> Orthogonal SIC Code Classifier is a paid API for AI agents from x402.orthogonal.com, paid per call via x402, $0.03/call, status unknown (last checked 2026-09-13).

Classifies a brand into Standard Industrial Classification (SIC) codes given its domain name or brand name.

## Facts

- Endpoint: GET https://x402.orthogonal.com/context-dev/web/sic
- Price: $0.03/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/orthogonal-sic-code-classifier-5466452a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Zc1SDrn8ouuoV5LoM7mZo

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 orthogonal-sic-code-classifier-5466452a
```

Example prompt: What SIC codes does Shopify belong to? Use its domain shopify.com and return up to 3 results from the original_sic dataset.

## When to prefer this

Use this endpoint when you need to map a company domain or brand name to a standardized SIC code for compliance, market research, lead enrichment, or industry segmentation. Prefer it over manual lookups or LLM guessing when you need structured, authoritative SIC classifications aligned with either the historical SIC standard or the SEC's current taxonomy.

## Known failure modes

- Unknown or ambiguous domain/brand name may return low-confidence or empty results
- Requesting more than 10 results or fewer than 1 will fail validation
- Passing an unsupported dataset type string will return an error
- Very new or obscure brands may not match any SIC code

## How this service works

Classify any brand into Standard Industrial Classification (SIC) codes from its domain or name.

## Output

Returns one or more SIC code entries ranked by relevance, each including the SIC code number and its associated industry description, drawn from either the original SIC dataset or the SEC's latest SIC classification, up to the requested maximum.

## 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",
     "properties": {
      "type": {
       "type": "string",
       "description": "Which SIC dataset to classify against: original_sic or latest_sec_sic."
      },
      "input": {
       "type": "string",
       "description": "Brand domain or title to retrieve SIC code for."
      },
      "maxResults": {
       "type": "integer",
       "description": "Maximum number of SIC codes to return. Must be between 1 and 10. Defaults to 5."
      },
      "minResults": {
       "type": "integer",
       "description": "Minimum number of SIC codes to return. Must be at least 1. Defaults to 1."
      }
     }
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/orthogonal-sic-code-classifier-5466452a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.orthogonal.com](https://www.zero.xyz/host/x402.orthogonal.com/llms.txt)