NutrientsDB

A curated global food-composition dataset of roughly 2.9 million food entries across 86 normalized nutrient fields, deduplicated across 180+ countries and sold under a one-time license as a downloadable file for local use rather than as a hosted, metered API. Every nutrient value is expressed per 100 g of food, with the unit encoded as a suffix on the field name, and a null value means the source did not report that nutrient rather than that the value is zero. NutrientsDB fronts the licensed dataset with a free, keyless, read-only Sample API that exposes a public 1,000-food slice carrying the identical 86-field schema, so developers, researchers, and AI builders can inspect the shape and density of the data before licensing it. The same sample is mirrored as plain JSON on GitHub and Hugging Face.

NutrientsDB publishes 1 API contract indexed on the APIs.io network: Foods API. Tagged areas include Nutrition, Food, Nutrients, food-composition, and Data.

The NutrientsDB catalog on APIs.io includes 1 Spectral governance ruleset.

NutrientsDB’s developer surface includes authentication, documentation, API reference, engineering blog, support, pricing, and 15 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

33.3/100 thin ▬ flat Agent 29/100 agent ready Front door AI 1/6 silent Heartbeat 52/100 alive saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessOpen

1 published contract 2 Agent Skills

Nutrition Food Nutrients food-composition Data Search Sample Data Datasetsai-buildersReference Data Open Datakeyless-api

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 33.3/100 · thin

Contract Quality 13.1 / 21

Developer Ergonomics 6.0 / 17

Access Clarity 0.0 / 17

Operational Transparency 0.3 / 11

Contract Governance 3.4 / 10

Discoverability 5.2 / 9

Regulatory Posture 2.5 / 15

Agent readiness — 29/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 6 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 9 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 4 / 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 does not apply to this provider. The published contracts declare no write operations, and a read-only API cannot create-or-update. The facet is excluded from this provider's denominator entirely — not scored zero. A reference or data API is not deficient for being unable to upsert.

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
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented)
Typed Event Surface +6 pts — AsyncAPI document, OR webhooks/callbacks objects in the as-published OpenAPI, OR common[].type includes Webhooks

4 more unmet checks in the Agent Readiness table above.

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

Access Clarity scores 0.0 — up to +20.0 composite points
Developer Ergonomics scores 35.1 — up to +13.0 composite points
Operational Transparency scores 2.6 — up to +12.7 composite points

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.

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/nutrientsdb/apis.yml: open an issue on github.com/api-evangelist/nutrientsdb 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 1

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

NutrientsDB Foods API

The Foods API from NutrientsDB — 1 operation(s) for foods.

Open Collections 1

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

NutrientsDB Sample Foods API

OPEN COLLECTION

Arazzo Workflows 1

Multi-step API workflows described with the Arazzo specification.

Resolve a food name to a NutrientsDB record and read its nutrient profile

Two-step flow over the free, keyless NutrientsDB Sample API: search the public 1,000-food sample by name fragment, then re-fetch the chosen record by its stable public_id. Both ...

ARAZZO

Agent Skills 2

Packaged agent skills for driving this provider's APIs from an AI assistant.

Evaluate whether the NutrientsDB dataset fits a project

AGENT SKILL

Look up a food's nutrition facts in NutrientsDB

AGENT SKILL

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

NutrientsDB API Rules

46 rules · 44 errors 1 warnings 1 info

SPECTRAL

OpenAPI Overlays 1

Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.

Nutrientsdb Sample Api Overlay

10 actions · documentation · nutrientsdb-sample-api-openapi.yml

DERIVED

JSON Schema 1

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

NutrientsDB Food

3 properties

JSON SCHEMA

Examples 5

Example request and response payloads for these APIs.

Nutrientsdb Error Missing Params

2 fields

EXAMPLE

Nutrientsdb Error Not Found

2 fields

EXAMPLE

Nutrientsdb Error Short Q

2 fields

EXAMPLE

Nutrientsdb Lookup

2 fields

EXAMPLE

Nutrientsdb Search

6 fields

EXAMPLE

Security Posture 2

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

Nutrientsdb Authentication

0 schemes

SECURITY

Nutrientsdb Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Nutrientsdb Agentic Access

1 operation

1 operations · 0 acting

AGENTIC

Resources

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

X-MCPServerCandidate

AgenticAccess

LLMsTxt

AgentSkill

Design & Contract 4

Pagination, idempotency, versioning, errors, and events

Conventions

Lifecycle

Conformance

Vocabulary

Build 2

SDKs, sample code, and the tooling you integrate with

Postman

Postman

GitHubOrganization

GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 1

Properties that don't map to a standard resource type

Overlay

Overlay

Source (apis.yml)

name: NutrientsDB
description: A curated global food-composition dataset of roughly 2.9 million food entries across 86 normalized nutrient fields,
  deduplicated across 180+ countries and sold under a one-time license as a downloadable file for local use rather than as
  a hosted, metered API. Every nutrient value is expressed per 100 g of food, with the unit encoded as a suffix on the field
  name, and a null value means the source did not report that nutrient rather than that the value is zero. NutrientsDB fronts
  the licensed dataset with a free, keyless, read-only Sample API that exposes a public 1,000-food slice carrying the identical
  86-field schema, so developers, researchers, and AI builders can inspect the shape and density of the data before licensing
  it. The same sample is mirrored as plain JSON on GitHub and Hugging Face.
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: open
  trial: false
  try_now: false
  public: true
  gated: none
  gated_source:
  - onboarding
  label: Open access
  confidence: low
  source:
  - authentication
  - security
  generated: '2026-11-06'
  method: derived
image: https://nutrientsdb.com/og-image.png
url: https://raw.githubusercontent.com/api-evangelist/nutrientsdb/refs/heads/main/apis.yml
created: '2026-08-02'
modified: '2026-08-09'
specificationVersion: '0.23'
tags:
- Nutrition
- Food
- Nutrients
- food-composition
- Data
- Search
- Sample Data
- Datasets
- ai-builders
- Reference Data
- Open Data
- keyless-api
tags_raw:
- nutrition
- food
- nutrients
- food-composition
- data
- search
- sample-data
- dataset
- ai-builders
- reference-data
- open-data
- keyless-api
apis:
- aid: nutrientsdb:nutrientsdb-foods-api
  name: NutrientsDB Foods API
  description: The Foods API from NutrientsDB — 1 operation(s) for foods.
  humanURL: https://www.nutrientsdb.com/api/docs
  baseURL: https://www.nutrientsdb.com/api
  tags:
  - Food
  tags_raw:
  - Foods
  properties:
  - type: OpenAPI
    url: openapi/nutrientsdb-foods-api-openapi.yml
  - type: PostmanCollection
    url: https://documenter.getpostman.com/view/57076285/2sBY4TqJ5d
  - type: Documentation
    url: https://www.nutrientsdb.com/api/docs
  - type: Examples
    url: examples/_index.yml
  - type: ErrorCatalog
    url: errors/nutrientsdb-problem-types.yml
  - type: DataModel
    url: data-model/nutrientsdb-data-model.yml
  - type: JSONSchema
    url: json-schema/nutrientsdb-food.json
  - type: Arazzo
    url: arazzo/nutrientsdb-search-then-lookup.yml
maintainers:
- FN: Colinear Studio
  url: https://github.com/colinearstudio
generated:
  by: apis.io/add
  model: claude-opus-4-8
  confidence: 80
  at: '2026-08-02T16:14:49.198Z'
common:
- type: Website
  url: https://www.nutrientsdb.com/
- type: X-MCPServerCandidate
  url: mcp/nutrientsdb-mcp.yml
  note: 'Renamed from MCPServer 2026-09-03 (roadmap#247): the manifest self-describes as status: candidate — a tool list derived
    from the published API contracts, not an existing server. The scorer already read the manifest and reported mcp_server
    correctly; the MCPServer type was crediting the artifact-type surfaces with a server that does not exist.'
- type: Overlay
  url: overlays/nutrientsdb-sample-api-overlay.yaml
- type: AgenticAccess
  url: agentic-access/nutrientsdb-agentic-access.yml
- type: DomainSecurity
  url: security/nutrientsdb-domain-security.yml
- type: Authentication
  url: authentication/nutrientsdb-authentication.yml
- type: Conventions
  url: conventions/nutrientsdb-conventions.yml
- type: Lifecycle
  url: lifecycle/nutrientsdb-lifecycle.yml
- type: Conformance
  url: conformance/nutrientsdb-conformance.yml
- type: Vocabulary
  url: vocabulary/nutrientsdb-nutrient-schema.yml
- type: LLMsTxt
  url: llms/nutrientsdb-llms.txt
- type: AgentSkill
  url: skills/_index.yml
- type: Documentation
  url: https://www.nutrientsdb.com/docs
- type: APIReference
  url: https://www.nutrientsdb.com/api/docs
- type: Postman
  url: https://documenter.getpostman.com/view/57076285/2sBY4TqJ5d
- type: GitHubOrganization
  url: https://github.com/colinearstudio
- type: Blog
  url: https://www.nutrientsdb.com/blog
- type: Support
  url: https://www.nutrientsdb.com/contact
- type: Pricing
  url: https://www.nutrientsdb.com/pricing
- type: TermsOfService
  url: https://www.nutrientsdb.com/terms
- type: PrivacyPolicy
  url: https://www.nutrientsdb.com/privacy
x-enrichment:
  date: '2026-08-09'
  status: enriched
  pass: local-v1
  artifacts_added: 28

NutrientsDB API — frequently asked questions

Does NutrientsDB have an API?

Yes. APIs.io lists 1 API from NutrientsDB, including NutrientsDB Foods API.

Is there an OpenAPI specification for the NutrientsDB API?

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

How do I authenticate with the NutrientsDB API?

NutrientsDB uses bearer-token authentication (0 schemes). The details are profiled on APIs.io as Nutrientsdb Authentication.

Is the NutrientsDB API ready for AI agents?

NutrientsDB has a Kin Score of 33.3 out of 100 (thin) and an Agent Readiness score of 29.2 (agent-ready), scored by API Evangelist on 2026-11-06.

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