# ARC Taxonomy API

**Canonical:** https://apis.io/apis/appalachian-regional-commission/arc-taxonomy-api/  
**Provider:** Appalachian Regional Commission — https://apis.io/providers/appalachian-regional-commission/  
**Base URL:** https://www.arc.gov/wp-json  
**Documentation:** https://www.arc.gov/research-evaluations-maps-data/

ARC Taxonomy API is one of 7 APIs that [Appalachian Regional Commission](https://apis.io/providers/appalachian-regional-commission/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. Tagged areas include Taxonomy, Vocabularies, Metadata, Open Data, and Regional Data. The published artifact set on APIs.io includes an OpenAPI specification and an API reference.

Anonymous read access to the 34 controlled vocabularies ARC classifies its content with — states_counties (446 terms), investment_priority_topic (22), tax_year (70), global_type (31), the research, fact-sheet, event, staff and grant-resource vocabularies — plus the /wp/v2/types, /wp/v2/taxonomies and /wp/v2/statuses registries that describe the content model itself. ARC's content has no foreign keys; these terms are the join.

## Operations (60 of 74)

| Method | Path | Summary |
|---|---|---|
| GET | `/wp/v2/categories` | GET /wp/v2/categories |
| GET | `/wp/v2/categories/{id}` | GET /wp/v2/categories/{id} |
| GET | `/wp/v2/tags` | GET /wp/v2/tags |
| GET | `/wp/v2/tags/{id}` | GET /wp/v2/tags/{id} |
| GET | `/wp/v2/global_type` | GET /wp/v2/global_type |
| GET | `/wp/v2/global_type/{id}` | GET /wp/v2/global_type/{id} |
| GET | `/wp/v2/tax_year` | GET /wp/v2/tax_year |
| GET | `/wp/v2/tax_year/{id}` | GET /wp/v2/tax_year/{id} |
| GET | `/wp/v2/states_counties` | GET /wp/v2/states_counties |
| GET | `/wp/v2/states_counties/{id}` | GET /wp/v2/states_counties/{id} |
| GET | `/wp/v2/investment_priority_topic` | GET /wp/v2/investment_priority_topic |
| GET | `/wp/v2/investment_priority_topic/{id}` | GET /wp/v2/investment_priority_topic/{id} |
| GET | `/wp/v2/newsroom_topic` | GET /wp/v2/newsroom_topic |
| GET | `/wp/v2/newsroom_topic/{id}` | GET /wp/v2/newsroom_topic/{id} |
| GET | `/wp/v2/newsroom_types` | GET /wp/v2/newsroom_types |
| GET | `/wp/v2/newsroom_types/{id}` | GET /wp/v2/newsroom_types/{id} |
| GET | `/wp/v2/office_inspector_general_type` | GET /wp/v2/office_inspector_general_type |
| GET | `/wp/v2/office_inspector_general_type/{id}` | GET /wp/v2/office_inspector_general_type/{id} |
| GET | `/wp/v2/operational_guidance_type` | GET /wp/v2/operational_guidance_type |
| GET | `/wp/v2/operational_guidance_type/{id}` | GET /wp/v2/operational_guidance_type/{id} |
| GET | `/wp/v2/map_topic` | GET /wp/v2/map_topic |
| GET | `/wp/v2/map_topic/{id}` | GET /wp/v2/map_topic/{id} |
| GET | `/wp/v2/research_eval_maps_data_type` | GET /wp/v2/research_eval_maps_data_type |
| GET | `/wp/v2/research_eval_maps_data_type/{id}` | GET /wp/v2/research_eval_maps_data_type/{id} |
| GET | `/wp/v2/research_report_eval_topic` | GET /wp/v2/research_report_eval_topic |
| GET | `/wp/v2/research_report_eval_topic/{id}` | GET /wp/v2/research_report_eval_topic/{id} |
| GET | `/wp/v2/fact_sheets_infographics_type` | GET /wp/v2/fact_sheets_infographics_type |
| GET | `/wp/v2/fact_sheets_infographics_type/{id}` | GET /wp/v2/fact_sheets_infographics_type/{id} |
| GET | `/wp/v2/fact_sheets_infographics_topic` | GET /wp/v2/fact_sheets_infographics_topic |
| GET | `/wp/v2/fact_sheets_infographics_topic/{id}` | GET /wp/v2/fact_sheets_infographics_topic/{id} |
| GET | `/wp/v2/event_type` | GET /wp/v2/event_type |
| GET | `/wp/v2/event_type/{id}` | GET /wp/v2/event_type/{id} |
| GET | `/wp/v2/event_topic` | GET /wp/v2/event_topic |
| GET | `/wp/v2/event_topic/{id}` | GET /wp/v2/event_topic/{id} |
| GET | `/wp/v2/event_host` | GET /wp/v2/event_host |
| GET | `/wp/v2/event_host/{id}` | GET /wp/v2/event_host/{id} |
| GET | `/wp/v2/month` | GET /wp/v2/month |
| GET | `/wp/v2/month/{id}` | GET /wp/v2/month/{id} |
| GET | `/wp/v2/staff_type` | GET /wp/v2/staff_type |
| GET | `/wp/v2/staff_type/{id}` | GET /wp/v2/staff_type/{id} |
| GET | `/wp/v2/staff_topic` | GET /wp/v2/staff_topic |
| GET | `/wp/v2/staff_topic/{id}` | GET /wp/v2/staff_topic/{id} |
| GET | `/wp/v2/state_partner_role` | GET /wp/v2/state_partner_role |
| GET | `/wp/v2/state_partner_role/{id}` | GET /wp/v2/state_partner_role/{id} |
| GET | `/wp/v2/state_resource_type` | GET /wp/v2/state_resource_type |
| GET | `/wp/v2/state_resource_type/{id}` | GET /wp/v2/state_resource_type/{id} |
| GET | `/wp/v2/grant_type` | GET /wp/v2/grant_type |
| GET | `/wp/v2/grant_type/{id}` | GET /wp/v2/grant_type/{id} |
| GET | `/wp/v2/funding_source` | GET /wp/v2/funding_source |
| GET | `/wp/v2/funding_source/{id}` | GET /wp/v2/funding_source/{id} |
| GET | `/wp/v2/grant_resources_funding_type` | GET /wp/v2/grant_resources_funding_type |
| GET | `/wp/v2/grant_resources_funding_type/{id}` | GET /wp/v2/grant_resources_funding_type/{id} |
| GET | `/wp/v2/grant_resources_resource_type` | GET /wp/v2/grant_resources_resource_type |
| GET | `/wp/v2/grant_resources_resource_type/{id}` | GET /wp/v2/grant_resources_resource_type/{id} |
| GET | `/wp/v2/grant_resources_funding_stage` | GET /wp/v2/grant_resources_funding_stage |
| GET | `/wp/v2/grant_resources_funding_stage/{id}` | GET /wp/v2/grant_resources_funding_stage/{id} |
| GET | `/wp/v2/applicant_resources_funding_op` | GET /wp/v2/applicant_resources_funding_op |
| GET | `/wp/v2/applicant_resources_funding_op/{id}` | GET /wp/v2/applicant_resources_funding_op/{id} |
| GET | `/wp/v2/applicant_resources_project_type` | GET /wp/v2/applicant_resources_project_type |
| GET | `/wp/v2/applicant_resources_project_type/{id}` | GET /wp/v2/applicant_resources_project_type/{id} |

…and 14 more operations. They are listed in full on the page.

## Machine-readable artifacts (4)

- **OpenAPI** — https://raw.githubusercontent.com/api-evangelist/appalachian-regional-commission/refs/heads/main/openapi/appalachian-regional-commission-taxonomy-api-openapi.yml
- **Overlay** — https://raw.githubusercontent.com/api-evangelist/appalachian-regional-commission/refs/heads/main/overlays/appalachian-regional-commission-taxonomy-overlay.yaml
- **APIReference** — https://www.arc.gov/wp-json/wp/v2/taxonomies
- **DataModel** — https://raw.githubusercontent.com/api-evangelist/appalachian-regional-commission/refs/heads/main/data-model/appalachian-regional-commission-data-model.yml

## Other Appalachian Regional Commission APIs (6)

- [ARC Research and Data API](https://apis.io/apis/appalachian-regional-commission/arc-research-data-api/)
- [ARC Geospatial API](https://apis.io/apis/appalachian-regional-commission/arc-geospatial-api/)
- [ARC Programs API](https://apis.io/apis/appalachian-regional-commission/arc-programs-api/)
- [ARC Content API](https://apis.io/apis/appalachian-regional-commission/arc-content-api/)
- [ARC API Discovery](https://apis.io/apis/appalachian-regional-commission/arc-api-discovery/)
- [ARC Data Report Tool](https://apis.io/apis/appalachian-regional-commission/arc-data-reports/)

## Tags

Taxonomy, Vocabularies, Metadata, Open Data, Regional Data

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/appalachian-regional-commission/arc-taxonomy-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/appalachian-regional-commission/.