HempData

HempData provides free, citation‑backed data on U.S. hemp regulations, statutes, bills, and enforcement actions across all 50 states and DC. Their API offers endpoints for compliance checks, state profiles, and regulatory queries, all without signup or payment, supporting developers building hemp‑related applications.

HempData publishes 2 API contracts indexed on the APIs.io network, including API API, and 1 more. Tagged areas include Hemp, Compliance, Regulations, and Free.

The HempData catalog on APIs.io includes 1 event-driven AsyncAPI specification, 1 JSON-LD context, and 1 Spectral governance ruleset.

HempData’s developer surface includes authentication, pricing, changelog, documentation, API reference, getting-started guide, signup flow, and 25 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

55.0/100 strong Agent 21/100 agent aware Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

1 published contract

Hemp Compliance Regulations Free

Kin Score

Kin Score How this is scored →
scored 2026-11-13 · rubric v0.28.0

Composite quality — 55.0/100 · strong

Contract Quality 13.8 / 21

Developer Ergonomics 8.9 / 17

Access Clarity 8.3 / 17

Operational Transparency 5.0 / 11

Contract Governance 2.2 / 10

Discoverability 5.9 / 9

Regulatory Posture 5.3 / 15

Agent readiness — 21/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 6 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship Ask about this →
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author Ask about this →
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented) Ask about this →
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0 Ask about this →
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented) Ask about this →
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link Ask about this →

9 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Access Clarity scores 48.9 — up to +10.2 composite points Ask about this →
Developer Ergonomics scores 52.4 — up to +9.5 composite points Ask about this →
Contract Governance scores 22.0 — up to +9.4 composite points Ask about this →

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Not sure how this applies to your stack? Ask about any one item. Kin Lane reads every question, looks at your profile and your situation, and replies with what a fix would take — scoped to that one area, priced up front, yours whether you ship it or not. Ask a question →

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from the provider profile at artifacts.apis.io/hempdata-io/apis.yml: open an issue on github.com/api-evangelist/hempdata-io to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Standards implemented 1

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

OpenAPI

measured — observed by APIs.io (published)

APIs 2

Individual APIs this provider publishes, each with its own machine-readable definition.

HempData API

Structured hemp and cannabis regulatory data for all US states and DC.

HempData API API

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 re...

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Hempdata Io Webhooks

ASYNCAPI

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Hempdata Io Context

37 classes · 124 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs. Counts are the severity each rule declares, not results of running them.

HempData API Rules

64 rules · 56 error-severity 7 warn-severity 1 info-severity

SPECTRAL

JSON Schema 6

Standalone JSON Schema definitions for this provider's data models.

ApiResponse_FreeKey

4 properties

JSON SCHEMA

ComplianceCheckResult

26 properties

JSON SCHEMA

ComplianceReformulateRequest

3 properties

JSON SCHEMA

ComplianceScanRequest

7 properties

JSON SCHEMA

WebhookCreateRequest

2 properties

JSON SCHEMA

WidgetCheckRequest

5 properties

JSON SCHEMA

Security Posture 4

Authentication, domain security, vulnerability disclosure, and trust-center signals.

HempData Authentication

1 scheme

SECURITY

HempData Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

HempData Vulnerability Disclosure

security.txt · contact published

SECURITY

HempData Trust Center

SOC 2, ISO 27001, PCI DSS, HIPAA

SECURITY

Resources

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

SignUp

SignUp

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

WellKnown

WellKnown

Design & Contract 7

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

Conformance

Webhooks

DataModel

ErrorCatalog

Scroll for all 7

Access & Security 8

Authentication, authorization, and security posture

Compliance

Authentication

SecurityTxt

SecurityTxt

Security

TrustCenter

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Scroll for all 8

Operate 2

Status, limits, changes, and where to get help

StatusPage

StatusPage

ChangeLog

ChangeLog

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 3

The organization behind the API

Newsroom

Newsroom

Website

Website

Blog

Blog

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: hempdata-io
name: HempData
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  - security
  generated: '2026-11-13'
  method: derived
image: https://hempdata.io/opengraph-image?478af5769144353c
description: HempData provides free, citation‑backed data on U.S. hemp regulations, statutes, bills, and enforcement actions
  across all 50 states and DC. Their API offers endpoints for compliance checks, state profiles, and regulatory queries, all
  without signup or payment, supporting developers building hemp‑related applications.
url: https://artifacts.apis.io/hempdata-io/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-11 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-11-11'
modified: '2026-11-11'
tags:
- Hemp
- Compliance
- Regulations
- Free
tags_raw:
- Hemp
- Compliance
- Regulations
- API
- Free
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Spectral
  url: rules/hempdata-io-rules.yml
- type: JSONLD
  url: json-ld/hempdata-io-context.jsonld
- type: Vocabulary
  url: vocabulary/hempdata-io-vocabulary.yml
- type: Conformance
  url: conformance/hempdata-io-conformance.yml
- type: Webhooks
  url: asyncapi/hempdata-io-webhooks.yml
- type: DataModel
  url: data-model/hempdata-io-data-model.yml
- type: Compliance
  url: https://hempdata.io/security
- type: Authentication
  url: authentication/hempdata-io-authentication.yml
- type: ErrorCatalog
  url: errors/hempdata-io-problem-types.yml
- type: LLMsTxt
  url: llms/hempdata-io-llms.txt
- type: SecurityTxt
  url: well-known/hempdata-io-security.txt
- type: SecurityTxt
  url: well-known/hempdata-io-api-security.txt
- type: WellKnown
  url: well-known/hempdata-io-well-known.yml
- type: Hosts
  url: hosts/hempdata-io-hosts.yml
- type: Vendors
  url: vendors/hempdata-io-vendors.yml
- type: StatusPage
  url: https://hempdata.io/status
- type: Security
  url: https://hempdata.io/security
- type: Pricing
  url: https://hempdata.io/pricing
- type: Newsroom
  url: https://hempdata.io/press
- type: ChangeLog
  url: https://hempdata.io/changelog
- type: DeveloperPortal
  url: https://api.hempdata.io\
- type: TrustCenter
  url: security/hempdata-io-trust-center.yml
- type: VulnerabilityDisclosure
  url: security/hempdata-io-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/hempdata-io-domain-security.yml
- type: Website
  url: https://hempdata.io/
- type: Documentation
  url: https://api.hempdata.io/docs
- type: APIReference
  url: https://api.hempdata.io/reference
- type: GettingStarted
  url: https://api.hempdata.io/playground
- type: SignUp
  url: https://api.hempdata.io/signup
- type: TermsOfService
  url: https://hempdata.io/terms
- type: PrivacyPolicy
  url: https://hempdata.io/privacy
- type: Blog
  url: https://hempdata.io/blog
apis:
- name: HempData API
  description: Structured hemp and cannabis regulatory data for all US states and DC.
  humanURL: https://api.hempdata.io/docs
  baseURL: https://api.hempdata.io
  properties: []
  aid: hempdata-io:hempdata-api
- aid: hempdata-io:hempdata-api-api
  name: HempData API API
  description: 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
  humanURL: https://api.hempdata.io/reference
  baseURL: https://api.hempdata.io
  properties:
  - type: OpenAPI
    url: openapi/_original/hempdata-io-api-openapi.json
  - type: JSONSchema
    url: json-schema/hempdata-io-compliance-check-result-schema.json
  - type: JSONSchema
    url: json-schema/hempdata-io-webhook-create-request-schema.json
  - type: JSONSchema
    url: json-schema/hempdata-io-api-response-free-key-schema.json
  - type: JSONSchema
    url: json-schema/hempdata-io-compliance-scan-request-schema.json
  - type: JSONSchema
    url: json-schema/hempdata-io-compliance-reformulate-request-schema.json
  - type: JSONSchema
    url: json-schema/hempdata-io-widget-check-request-schema.json
x-enrichment:
  date: '2026-11-11'
  status: enriched
  artifacts_added: 20
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

HempData API — frequently asked questions

Does HempData have an API?

Yes. APIs.io lists 2 APIs from HempData, including HempData API and HempData API API.

Is there an OpenAPI specification for the HempData API?

Yes. APIs.io indexes 1 OpenAPI specification for HempData, each linked for download from this page.

How do I authenticate with the HempData API?

HempData uses bearer-token authentication (1 scheme). The details are profiled on APIs.io as HempData Authentication.

Is the HempData API ready for AI agents?

HempData has a Kin Score of 55.0 out of 100 (strong) and an Agent Readiness score of 20.5 (agent-aware), scored by API Evangelist on 2026-11-13.

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