# North American Industry Classification System

Lookup, search, revision history, and crosswalks for NAICS industry classifications.

## Access

- Kind: api
- Audience: public
- Access: open
- Authentication: No authentication is required for public lookups.
- Lifecycle: active
- Observed health: operational

## Integration links

- Base URL: https://naics.datasourceapi.com
- Documentation: https://naics.datasourceapi.com/docs
- Repository: https://github.com/coopalliance/cca-cucm-services
- Catalog metadata: https://services.datasourceapi.com/api/v1/services/naics

## Capabilities

- business-classification
- industry-codes
- naics
- revision-crosswalks

## Provenance and freshness

- U.S. Census Bureau: NAICS 2007, 2012, 2017, and 2022 classifications, revision history, and crosswalks. (https://www.census.gov/naics/)

Update cadence: Release-based updates; an automated deployment schedule was not located.. Metadata last verified: 2026-09-03.


## Agent readiness

limited (45/100): Public docs exist, but a directly attributable implementation repository and OpenAPI URL were not confirmed.

## Examples

### NAICS lookup

Look up a NAICS code.

```http
GET https://naics.datasourceapi.com/api/v1/naics/541511
```