# HempData API API

**Canonical:** https://apis.io/apis/hempdata-io/hempdata-api-api/  
**Provider:** HempData — https://apis.io/providers/hempdata-io/  
**Base URL:** https://api.hempdata.io  
**Documentation:** https://api.hempdata.io/reference

HempData API API is one of 2 APIs that [HempData](https://apis.io/providers/hempdata-io/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. This API exposes 6 JSON Schema definitions. The published artifact set on APIs.io includes an OpenAPI specification and 6 JSON Schemas.

Structured hemp and cannabis regulatory data for all 50 US states plus Washington DC. Machine-readable compliance information including legal status, THC/CBD limits, labeling requirements, testing standards, shipping rules, and enforcement details — updated continuously and verified by legal analyst

## Operations (21)

| Method | Path | Summary |
|---|---|---|
| GET | `/v1/status` | Health check |
| GET | `/v1/answer` | Ask a hemp-law question (Verified Answer Engine) |
| GET | `/v1/compliance/check` | Check one product/substance in one state |
| GET | `/v1/compliance/matrix` | One substance/product across many states |
| POST | `/v1/compliance/scan` | Scan COA numbers against all jurisdictions |
| POST | `/v1/compliance/reformulate` | Reformulation targets for target states |
| GET | `/v1/regulations` | Query regulations |
| GET | `/v1/regulations/changelog` | Regulation change history |
| GET | `/v1/regulations/compare` | Compare state regulations |
| GET | `/v1/regulations/{id}` | Get single regulation |
| GET | `/v1/states` | List all states |
| GET | `/v1/states/{code}` | Get state profile |
| GET | `/v1/substances` | List substances |
| GET | `/v1/product-types` | List product types |
| GET | `/v1/verified/{brand_id}` | Verified badge lookup |
| GET | `/v1/webhooks` | List webhooks |
| POST | `/v1/webhooks` | Create webhook |
| DELETE | `/v1/webhooks/{id}` | Delete webhook |
| POST | `/v1/widget/check` | Widget compliance check |
| POST | `/v1/keys` | Provision a free API key |
| GET | `/v1/predictions/{state}` | (Preview) Forecast regulatory change for a state |

## Machine-readable artifacts (7)

- **OpenAPI** — https://artifacts.apis.io/hempdata-io/openapi/_original/hempdata-io-api-openapi.json
- **JSONSchema** — https://artifacts.apis.io/hempdata-io/json-schema/hempdata-io-compliance-check-result-schema.json
- **JSONSchema** — https://artifacts.apis.io/hempdata-io/json-schema/hempdata-io-webhook-create-request-schema.json
- **JSONSchema** — https://artifacts.apis.io/hempdata-io/json-schema/hempdata-io-api-response-free-key-schema.json
- **JSONSchema** — https://artifacts.apis.io/hempdata-io/json-schema/hempdata-io-compliance-scan-request-schema.json
- **JSONSchema** — https://artifacts.apis.io/hempdata-io/json-schema/hempdata-io-compliance-reformulate-request-schema.json
- **JSONSchema** — https://artifacts.apis.io/hempdata-io/json-schema/hempdata-io-widget-check-request-schema.json

## Other HempData APIs (1)

- [HempData API](https://apis.io/apis/hempdata-io/hempdata-api/)

---

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