Healthy Eating Index

The Healthy Eating Index (HEI) is a measure of diet quality, scored 0 to 100, that assesses how well a set of foods aligns with the Dietary Guidelines for Americans. It is not a company: it is a federal research instrument developed by USDA's Center for Nutrition Policy and Promotion with the National Cancer Institute, which publish its scoring standards, SAS code and population scores as web pages, PDFs and ZIP downloads, with no API.

Healthy Eating Index is profiled on the APIs.io network. Tagged areas include Nutrition, Diet Quality, Public Health, Federal Government, and Research.

Healthy Eating Index’s developer surface includes engineering blog, documentation, getting-started guide, support, and 7 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

11.3/100 emerging Agent 0/100 human only Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

0 APIs

NutritionDiet QualityPublic Health Federal Government ResearchDietary Guidelines

Kin Score

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

Composite quality — 11.3/100 · emerging

Contract Quality 0.0 / 21

Developer Ergonomics 4.9 / 17

Access Clarity 1.4 / 17

Operational Transparency 0.5 / 11

Contract Governance 0.0 / 10

Discoverability 3.9 / 9

Regulatory Posture 0.6 / 15

Agent readiness — 0/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 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 Government & Public Sector 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):

Machine-Readable Contract +18 pts — api_specs includes an OpenAPI document Ask about this →
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 →
Machine-Readable Auth +10 pts — a served openid-configuration/oauth-authorization-server carrying `issuer` (served), else the securitySchemes class in the provider OpenAPIs — bound (mutualTLS, DPoP, Signature) > negotiable (oauth2 authorizationCode/clientCredentials, openIdConnect) > bearer (http bearer, apiKey) 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 →
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes Ask about this →

13 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 0.0 — up to +25.0 composite points Ask about this →
Access Clarity scores 8.5 — up to +18.3 composite points Ask about this →
Developer Ergonomics scores 28.6 — up to +14.3 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/healthy-eating-index/apis.yml: open an issue on github.com/api-evangelist/healthy-eating-index 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 →

Security Posture 1

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

Healthy Eating Index Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Build 1

SDKs, sample code, and the tooling you integrate with

SourceCode

SourceCode

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 1

Pricing, plans, and the legal terms of use

PrivacyPolicy

PrivacyPolicy

Company 3

The organization behind the API

Newsroom

Newsroom

Blog

Blog

Website

Website

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: healthy-eating-index
name: Healthy Eating Index
description: 'The Healthy Eating Index (HEI) is a measure of diet quality, scored 0 to 100, that assesses how well a set of
  foods aligns with the Dietary Guidelines for Americans. It is not a company: it is a federal research instrument developed
  by USDA''s Center for Nutrition Policy and Promotion with the National Cancer Institute, which publish its scoring standards,
  SAS code and population scores as web pages, PDFs and ZIP downloads, with no API.'
url: https://artifacts.apis.io/healthy-eating-index/apis.yml
x-type: company
x-source: harvest:cuny-nutrition
x-tier: stub
x-tier-reason: 'not a company: a USDA and National Cancer Institute diet-quality measure with no API surface (enrichment pass
  2026-10-30, local-v5; was harvest)'
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  probe_state: none
  source:
  - security
  generated: '2026-11-13'
  method: derived
specificationVersion: '0.20'
created: '2026-10-30'
modified: '2026-10-30'
tags:
- Nutrition
- Diet Quality
- Public Health
- Federal Government
- Research
- Dietary Guidelines
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Hosts
  url: hosts/healthy-eating-index-hosts.yml
- type: Vendors
  url: vendors/healthy-eating-index-vendors.yml
- type: Newsroom
  url: https://www.fna.usda.gov/newsroom
- type: Blog
  url: https://www.usda.gov/about-usda/news/blog
- type: DomainSecurity
  url: security/healthy-eating-index-domain-security.yml
- type: Website
  url: https://www.fns.usda.gov/cnpp/healthy-eating-index-hei
- type: Documentation
  url: https://epi.grants.cancer.gov/hei/
- type: GettingStarted
  url: https://epi.grants.cancer.gov/hei/calculating-hei-scores.html
- type: SourceCode
  url: https://epi.grants.cancer.gov/hei/sas-code.html
- type: Support
  url: https://www.fna.usda.gov/contact-us
- type: PrivacyPolicy
  url: https://www.usda.gov/privacy-policy
apis: []
x-enrichment:
  date: '2026-10-30'
  status: minimal
  artifacts_added: 7
  pass: local-v5
x-coverage:
  state: none
  reason: not-a-software-company
  detail: The Healthy Eating Index is a diet-quality score published by USDA and the National Cancer Institute as web pages,
    PDFs and downloadable SAS macros, and its pages name no API, contract or developer program.
  evidence:
  - url: https://www.fns.usda.gov/cnpp/healthy-eating-index-hei
    status: 200
  - url: https://epi.grants.cancer.gov/hei/sas-code.html
    status: 200
  - url: https://www.fna.usda.gov/openapi.json
    status: 404
  - url: https://epi.grants.cancer.gov/openapi.json
    status: 404
  checked: '2026-10-30'

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