# National Agricultural Library

**Canonical:** https://apis.io/providers/national-agricultural-library/  
**Website:** https://www.nal.usda.gov/  
**APIs profiled:** 1

The USDA National Agricultural Library houses one of the world's largest collections devoted to agriculture and its related sciences, and operates FoodData Central, an integrated data system providing nutrient profiles for foods.

## Kin Score — 28.9 / 100 (thin)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 28.9).

| Facet | Score |
|---|---|
| Discoverability | 75.9 |
| Contract Quality | 54.5 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 7.9 |
| Developer Ergonomics | 21.4 |
| Commercial Clarity | 15.8 |
| Access Clarity | 15.8 |

Regulatory layer — **Education & Research**: 22.2 (matched via tags).

## Agent readiness — 32.1 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | yes |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | partial |
| 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 (1)

- **National Agricultural Library FDC API** — endpoints to retrieve nutrient data

## Agentic access (1)

- **National Agricultural Library Agentic Access** — 9 operations · 3 acting

## Security (2)

- **National Agricultural Library Authentication** — apiKey · 1 scheme
- **National Agricultural Library Domain Security** — TLSv1.2 · HSTS · DNSSEC · DMARC

## Plans (1)

- **National Agricultural Library Plans Pricing**

## Tags

Agriculture, Federal-Government, Library, Food, Nutrition

---

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