GETOpen
/api/v1/classification-systems/api/v1/classification-systems
List classification systems
Loading NACE reference
Open REST endpoints for NACE Rev. 2.1 reference data, search, code pages, conversion, national equivalents, crosswalks, and source metadata. You can call the public API without signing in or requesting a key.
List classification systems
List versions for a system
List NACE Rev. 2.1 codes
Get one versioned NACE code
Export one NACE code page record with related codes and sources as JSON, CSV, or Markdown
Browse hierarchy overview or one expanded section tree
Search by code, term, national code, business language, multilingual metadata, or country context
Classify a business description into NACE suggestions with source links
Export a deterministic classification memo as Markdown, HTML, JSON, PDF, or DOCX
Create and export a deterministic classification memo from structured answers
Compare two or more NACE codes as JSON, CSV, or Markdown
Convert NACE Rev. 2 codes to Rev. 2.1 candidates or reverse-map structured Rev. 2.1 rows, with JSON, CSV, or Markdown output
Get Rev. 2 to Rev. 2.1 change records
Get national equivalent mappings
List national systems linked for a country
Inspect crosswalk metadata, supported target systems, and optional mapped examples
Map NACE Rev. 2.1 codes to adjacent systems
List version, national, and crosswalk mapping records
List source documents and referenced data elements
Get one source document record
Get website status, source freshness, API status, and publishing checks
Get privacy, retention, security, and AI-processing commitments for NACE.codes
Download the machine-readable OpenAPI 3.1 contract for all published API routes
Download the public Postman collection for core NACE API workflows
Download a JavaScript starter SDK client for the NACE API
Download a Python starter SDK client for the NACE API
Download an installable NACE.codes AI skill package