# Nutritionix

**Canonical:** https://apis.io/providers/nutritionix/  
**Website:** https://www.nutritionix.com/  
**APIs profiled:** 4

Nutritionix operates the world's largest verified nutrition database, exposing a Track API (v2) that converts natural-language food and exercise descriptions into full nutrient analysis, and powers food search, branded item lookup, and restaurant menu data for diet, fitness, and health applications.

## Kin Score — 39.3 / 100 (developing)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 39.3).

| Facet | Score |
|---|---|
| Discoverability | 81.5 |
| Contract Quality | 30.1 |
| Governance | 25.0 |
| Contract Governance | 25.0 |
| Operational Transparency | 34.2 |
| Developer Ergonomics | 26.2 |
| Commercial Clarity | 52.6 |
| Access Clarity | 52.6 |

Regulatory layer — **Health**: 21.3 (matched via tags).

## Agent readiness — 35.0 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | yes |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | verified |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Freemium · Self-serve signup — onboarding: self-serve, pricing: freemium, trial: no (confidence: high).

## APIs (4)

- **Nutritionix Brands API** — Search the database of food and restaurant brands.
- **Nutritionix Item API** — Look up detailed nutrition for branded and restaurant menu items.
- **Nutritionix Natural Language API** — Translate plain-text food and exercise phrases into structured nutrition data.
- **Nutritionix Search API** — Search the nutrition database for common and branded foods.

## Agentic access (1)

- **Nutritionix Agentic Access** — 6 operations · 2 acting

## Security (2)

- **Nutritionix Authentication** — apiKey · 2 schemes
- **Nutritionix Domain Security** — TLSv1.3 · HSTS · DMARC

## Plans (1)

- **Nutritionix Plans Pricing**

## Use cases (4)

- **Diet & Calorie Tracking** — Power food logging and calorie-counting apps with natural-language meal entry.
- **Fitness & Activity Tracking** — Estimate calories burned from logged workouts and activities.
- **Restaurant Menu Nutrition** — Surface accurate nutrition facts for restaurant and chain menu items.
- **Nutrition Label Rendering** — Generate FDA-style nutrition labels from API nutrient data.

## Tags

Restaurant, Health, Nutrition, Food, Fitness, Public APIs

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/nutritionix/). Scores are computed from the provider's own public artifacts under a published rubric.