# GNC Holdings

**Canonical:** https://apis.io/providers/gnc-holdings/  
**Website:** https://www.gnc.com/  
**APIs profiled:** 0

GNC Holdings, LLC (General Nutrition Centers) is an American specialty retailer of health, wellness, and performance products including vitamins, minerals, herbal supplements, sports nutrition, diet, and energy products. Founded in 1935 and headquartered in Pittsburgh, Pennsylvania, GNC is a wholly owned subsidiary of Harbin Pharmaceutical Group following its 2020 acquisition. The company operates owned and franchised retail locations, online stores, and retail partnerships across approximately 50 countries.

## Kin Score — 6.2 / 100 (minimal)

Scored 2026-08-19 under rubric 0.12.0. Trend: flat (-4.3 from 10.5).

| Facet | Score |
|---|---|
| Discoverability | 50.0 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 0.0 |
| Developer Ergonomics | 0.0 |
| Commercial Clarity | 10.5 |
| Access Clarity | 10.5 |

Regulatory layer — **Health**: 12.5 (matched via tags).

## Agent readiness — 0.0 (human-only)

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

## Access

Unknown — onboarding: unknown, pricing: unknown, trial: no (confidence: low).

## Security (1)

- **Gnc Holdings Domain Security** — TLSv1.3 · HSTS · DMARC

## Tags

Diet, Health, Nutrition, Retail, Sports Nutrition, Supplements, Vitamins, Wellness, Fortune 1000

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