CalorieNinjas

CalorieNinjas provides an easy, free Nutrition Facts and Recipe API. Developers can retrieve nutrition information for over 100,000 foods and beverages using natural language queries, extract nutrition information from images of food-related text (menus, recipes, food journals), and search recipes matching search queries. All endpoints use a simple API key authentication model via the X-Api-Key header.

CalorieNinjas publishes 3 APIs on the APIs.io network: Imagetextnutrition API, Nutrition API, and Recipe API. Tagged areas include Beverages, Foods, Image Recognition, Nutrition, and Recipes.

CalorieNinjas’ developer surface includes authentication, developer portal, documentation, signup flow, pricing, and 7 more developer resources.

🌐 Visit website 📡 Source on GitHub

37.8/100 thin ▬ flat Agent 20/100 agent aware saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessFreemiumSelf serve⚡ Free to try

1 APIs

Beverages Foods Image Recognition Nutrition Recipes

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 37.8/100 · thin

Contract Quality 11.6 / 23

Developer Ergonomics 5.6 / 18

Access Clarity 9.7 / 18

Operational Transparency 0.9 / 12

Contract Governance 0.0 / 11

Discoverability 6.8 / 9

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 20/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 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

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

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 github.com/api-evangelist/calorie-ninjas: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 3

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

CalorieNinjas Imagetextnutrition API

The Imagetextnutrition API from CalorieNinjas — 1 operation(s) for imagetextnutrition.

CalorieNinjas Nutrition API

The Nutrition API from CalorieNinjas — 1 operation(s) for nutrition.

CalorieNinjas Recipe API

The Recipe API from CalorieNinjas — 1 operation(s) for recipe.

Open Collections 5

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

API Collection

OPEN COLLECTION

CalorieNinjas Imagetextnutrition API

OPEN COLLECTION

CalorieNinjas Imagetextnutrition Nutrition API

OPEN COLLECTION

CalorieNinjas Imagetextnutrition Recipe API

OPEN COLLECTION

CalorieNinjas

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Calorie Ninjas Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Calorie Ninjas Rate Limits

5 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Calorie Ninjas Finops

FINOPS

Security Posture 2

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

Calorie Ninjas Authentication

apiKey · 1 scheme

SECURITY

Calorie Ninjas Domain Security

TLSv1.3

SECURITY

Agentic Access 1

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

Calorie Ninjas Agentic Access

3 operations · 1 acting

AGENTIC

Resources

Get Started 3

Portal, sign-up, and the first successful call

Portal

Portal

Login

Signup

Signup

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

LlmsText

LlmsText

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Commercial 3

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Pricing

Pricing

Company 1

The organization behind the API

Website

Website

Source (apis.yml)

aid: calorie-ninjas
url: https://raw.githubusercontent.com/api-evangelist/calorie-ninjas/refs/heads/main/apis.yml
name: CalorieNinjas
tags:
- Beverages
- Foods
- Image Recognition
- Nutrition
- Recipes
type: Index
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: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-09-03'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/calorie-ninjas.png
access: 3rd-Party
created: '2024-03-30'
modified: '2026-05-19'
position: Consuming
description: CalorieNinjas provides an easy, free Nutrition Facts and Recipe API. Developers can retrieve nutrition information
  for over 100,000 foods and beverages using natural language queries, extract nutrition information from images of food-related
  text (menus, recipes, food journals), and search recipes matching search queries. All endpoints use a simple API key authentication
  model via the X-Api-Key header.
apis:
- aid: calorie-ninjas:calorie-ninjas-imagetextnutrition-api
  name: CalorieNinjas Imagetextnutrition API
  description: The Imagetextnutrition API from CalorieNinjas — 1 operation(s) for imagetextnutrition.
  humanURL: https://calorieninjas.com/api
  baseURL: https://api.calorieninjas.com/v1
  tags:
  - Imagetextnutrition
  properties:
  - type: OpenAPI
    url: openapi/calorie-ninjas-imagetextnutrition-api-openapi.yml
  - type: Documentation
    url: https://calorieninjas.com/api
  - type: Review
    url: openapi/calorieninjas-openapi-review.yml
- aid: calorie-ninjas:calorie-ninjas-nutrition-api
  name: CalorieNinjas Nutrition API
  description: The Nutrition API from CalorieNinjas — 1 operation(s) for nutrition.
  humanURL: https://calorieninjas.com/api
  baseURL: https://api.calorieninjas.com/v1
  tags:
  - Nutrition
  properties:
  - type: OpenAPI
    url: openapi/calorie-ninjas-nutrition-api-openapi.yml
  - type: Documentation
    url: https://calorieninjas.com/api
  - type: Review
    url: openapi/calorieninjas-openapi-review.yml
- aid: calorie-ninjas:calorie-ninjas-recipe-api
  name: CalorieNinjas Recipe API
  description: The Recipe API from CalorieNinjas — 1 operation(s) for recipe.
  humanURL: https://calorieninjas.com/api
  baseURL: https://api.calorieninjas.com/v1
  tags:
  - Recipe
  properties:
  - type: OpenAPI
    url: openapi/calorie-ninjas-recipe-api-openapi.yml
  - type: Documentation
    url: https://calorieninjas.com/api
  - type: Review
    url: openapi/calorieninjas-openapi-review.yml
common:
- type: Website
  url: https://www.calorieninjas.com/
- type: AgenticAccess
  url: agentic-access/calorie-ninjas-agentic-access.yml
- type: DomainSecurity
  url: security/calorie-ninjas-domain-security.yml
- type: Authentication
  url: authentication/calorie-ninjas-authentication.yml
- type: Portal
  url: https://calorieninjas.com/
- type: Documentation
  url: https://calorieninjas.com/api
- type: Login
  url: https://calorieninjas.com/signin
- type: Signup
  url: https://calorieninjas.com/register
- type: TermsOfService
  url: https://calorieninjas.com/tos
- type: PrivacyPolicy
  url: https://calorieninjas.com/privacy
- type: Pricing
  url: https://calorieninjas.com/pricing
- type: LlmsText
  url: https://calorieninjas.com/llms.txt
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
specificationVersion: '0.23'

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