# Johnnie-O

**Canonical:** https://apis.io/providers/johnnie-o/  
**Website:** https://www.johnnie-o.com/  
**APIs profiled:** 2

Johnnie-O is a Los Angeles based men's, women's and boys' apparel brand founded in 2005 by John O'Donnell, blending East Coast prep with West Coast casual across polos, performance golf shirts, outerwear, shorts and collegiate Game Day licensed product, sold direct through johnnie-o.com, its own retail stores, wholesale and green-grass golf accounts. It is an apparel company, not a software vendor, and it operates no developer program, publishes no API documentation, ships no SDK and has no GitHub organization. It does, however, expose two real anonymous machine-readable surfaces through the Shopify Hydrogen storefront it runs: an introspectable Storefront GraphQL endpoint on its own domain, and a live Universal Commerce Protocol (UCP) MCP endpoint on its Shopify-served primary domain that publishes thirteen agent tools for catalog search, cart, checkout and order lookup. The store also serves its own llms.txt and agents.md agent instructions. Those surfaces are Shopify platform infrastructure running under Johnnie-O's tenant and on hosts Johnnie-O controls; they are profiled here as Johnnie-O's agent surface, not as Johnnie-O-authored API design.

## Kin Score — 32.6 / 100 (thin)

Scored 2026-08-25 under rubric 0.14.0. Trend: flat (+0.0 from 32.6).

| Facet | Score |
|---|---|
| Discoverability | 87.0 |
| Contract Quality | 37.2 |
| Governance | 18.2 |
| Contract Governance | 18.2 |
| Operational Transparency | 0.0 |
| Developer Ergonomics | 28.0 |
| Commercial Clarity | 34.2 |
| Access Clarity | 34.2 |

## Agent readiness — 38.0 (agent-ready)

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

## APIs (2)

- **Johnnie-O Storefront GraphQL API** — Anonymous, fully introspectable GraphQL endpoint served from Johnnie-O's own Hydrogen storefront host. This is the Shopify Storefront API for merchant tenant 22750137; the Hydro...
- **Johnnie-O UCP Commerce MCP Endpoint** — Live remote MCP server implementing the Universal Commerce Protocol shopping service (version 2026-04-08) on Johnnie-O's Shopify-served primary domain. An anonymous JSON-RPC too...

## MCP servers (1)

- **Johnnie-O MCP Server**

## Security (2)

- **Johnnie O Authentication** — 4 schemes
- **Johnnie O Domain Security** — TLSv1.3 · HSTS · DMARC

## Plans (1)

- **Johnnie O Plans Pricing**

## Tags

Company, Apparel, Retail, E-Commerce, Direct to Consumer, Golf, Fashion, Consumer Goods, Shopify, Agentic Commerce

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