Johnnie-O

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.

Johnnie-O publishes 2 APIs on the APIs.io network. Tagged areas include Company, Apparel, Retail, E-Commerce, and Direct to Consumer.

Johnnie-O’s developer surface includes authentication, documentation, support, signup flow, and 20 more developer resources.

🌐 Visit website 📡 Source on GitHub
32.6/100 thin ▬ flat Agent 38/100 agent ready Full breakdown ↓
scored 2026-08-25 · rubric v0.14.0
2 APIs 1 MCP Servers
CompanyApparelRetailE-CommerceDirect to ConsumerGolfFashionConsumer GoodsShopifyAgentic Commerce

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-25 · rubric v0.14.0
Composite quality — 32.6/100 · thin
Contract Quality 9.3 / 25
Developer Ergonomics 5.6 / 20
Access Clarity 6.8 / 20
Operational Transparency 0.0 / 13
Contract Governance 2.2 / 12
Discoverability 8.7 / 10
Agent readiness — 38/100 · agent ready
Machine-Readable Contract 18 / 18
Agentic Access Contract 0 / 10
Documented Reversibility 0 / 6
MCP Server 12 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 8 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 0 / 6
Agent Skills 5 / 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 6 / 6
Protected Resource Metadata 5 / 5
Registration Without a Human 0 / 6
Agentic Commerce Surface 5 / 5
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/johnnie-o: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 2

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

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

Model Context Protocol servers that expose these APIs to AI agents.

Johnnie-O MCP Server

MCP SERVER

Pricing Plans 1

Published pricing tiers and plan structures.

Johnnie O Plans Pricing

0 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Johnnie O Rate Limits

0 limits

RATE LIMITS

Security Posture 2

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

Johnnie O Authentication

4 schemes

SECURITY

Johnnie O Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Johnnie O Scopes

OAuth 2.0 · no documented scopes

0 scopes

SCOPES

Resources

Get Started 1

Portal, sign-up, and the first successful call

SignUp
SignUp

Documentation 2

Reference material describing how the API behaves

GraphQL
GraphQL
 Documentation
Documentation

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

MCPServer
MCPServer
 LLMsTxt
LLMsTxt
 AgentSkill
AgentSkill
 WellKnown
WellKnown

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Conformance
Conformance
 Conventions
Conventions
 Lifecycle
Lifecycle
 ErrorCatalog
ErrorCatalog
 DataModel
DataModel

Build 2

SDKs, sample code, and the tooling you integrate with

ToolCrosswalk
ToolCrosswalk
 Packages
Packages

Access & Security 3

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity
 Authentication
Authentication
 OAuthScopes
OAuthScopes

Operate 3

Status, limits, changes, and where to get help

RateLimits
RateLimits
 Support
Support
 HelpCenter
HelpCenter

Commercial 3

Pricing, plans, and the legal terms of use

Plans
Plans
 TermsOfService
TermsOfService
 PrivacyPolicy
PrivacyPolicy

Company 1

The organization behind the API

Website
Website

Source (apis.yml)

apis.yml Raw ↑ 
aid: johnnie-o
name: Johnnie-O
description: '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.'
image: https://johnnie-o-prod.s3.us-west-2.amazonaws.com/media/_190x190_crop_center-center_none/logo-200x200.png
url: https://raw.githubusercontent.com/api-evangelist/johnnie-o/refs/heads/main/apis.yml
x-type: company
x-source: harvest:secondary-market
x-tier: stub
x-tier-reason: harvest
specificationVersion: '0.23'
created: '2026-08-23'
modified: '2026-08-23'
tags:
- Company
- Apparel
- Retail
- E-Commerce
- Direct to Consumer
- Golf
- Fashion
- Consumer Goods
- Shopify
- Agentic Commerce
tags_raw:
- Company
- Apparel
- Retail
- E-Commerce
- Direct To Consumer
- Golf
- Fashion
- Consumer Goods
- Shopify
- Agentic Commerce
apis:
- aid: johnnie-o:storefront-graphql
  name: Johnnie-O Storefront GraphQL API
  description: 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 Hydrogen app proxies the request and injects the storefront
    access token server-side, so callers need no credentials. Full introspection returned 414 types, 34 query fields and 41
    mutation fields covering products, variants, collections, carts, customers, blogs, pages, metaobjects, localization and
    Shop Pay sessions. The schema is Shopify's, not Johnnie-O's design work, but it is served on a Johnnie-O host and returns
    Johnnie-O's own commerce data.
  humanURL: https://www.johnnie-o.com/
  baseURL: https://www.johnnie-o.com/api/2024-10/graphql.json
  tags:
  - GraphQL
  - Products
  - Collections
  - Cart
  - Checkout
  - Customers
  - Commerce
  tags_raw:
  - GraphQL
  - Products
  - Collections
  - Cart
  - Checkout
  - Customers
  - Commerce
  properties:
  - type: GraphQL
    url: graphql/johnnie-o-storefront.graphql
  - type: DataModel
    url: data-model/johnnie-o-data-model.yml
  - type: Conventions
    url: conventions/johnnie-o-conventions.yml
  - type: ErrorCatalog
    url: errors/johnnie-o-problem-types.yml
  - type: Website
    url: https://www.johnnie-o.com/
- aid: johnnie-o:ucp-mcp
  name: Johnnie-O UCP Commerce MCP Endpoint
  description: 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 tools/list returns thirteen tools with complete input
    schemas — search_catalog, lookup_catalog, get_product, create_cart, get_cart, update_cart, cancel_cart, create_checkout,
    get_checkout, update_checkout, complete_checkout, cancel_checkout and get_order. Tool invocation is gated on a UCP agent
    profile URI. Capabilities declared at /.well-known/ucp cover checkout, cart, fulfillment and discount, with Shop Pay,
    card and Google Pay payment handlers. The store's own llms.txt requires explicit buyer approval before any agent completes
    payment.
  humanURL: https://checkout.johnnie-o.com/llms.txt
  baseURL: https://checkout.johnnie-o.com/api/ucp/mcp
  tags:
  - MCP
  - Agentic Commerce
  - UCP
  - Cart
  - Checkout
  - Catalog
  - Orders
  tags_raw:
  - MCP
  - Agentic Commerce
  - UCP
  - Cart
  - Checkout
  - Catalog
  - Orders
  properties:
  - type: MCPServer
    url: mcp/johnnie-o-mcp.yml
  - type: ToolCrosswalk
    url: mcp/johnnie-o-tool-crosswalk.yml
  - type: Documentation
    url: https://checkout.johnnie-o.com/llms.txt
  - type: Website
    url: https://www.johnnie-o.com/
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/johnnie-o-domain-security.yml
- type: Website
  url: https://www.johnnie-o.com/
- type: GraphQL
  url: graphql/johnnie-o-storefront.graphql
- type: MCPServer
  url: mcp/johnnie-o-mcp.yml
- type: ToolCrosswalk
  url: mcp/johnnie-o-tool-crosswalk.yml
- type: LLMsTxt
  url: llms/johnnie-o-llms.txt
- type: AgentSkill
  url: skills/_index.yml
- type: WellKnown
  url: well-known/johnnie-o-well-known.yml
- type: Authentication
  url: authentication/johnnie-o-authentication.yml
- type: OAuthScopes
  url: scopes/johnnie-o-scopes.yml
- type: Conformance
  url: conformance/johnnie-o-conformance.yml
- type: Conventions
  url: conventions/johnnie-o-conventions.yml
- type: Lifecycle
  url: lifecycle/johnnie-o-lifecycle.yml
- type: ErrorCatalog
  url: errors/johnnie-o-problem-types.yml
- type: DataModel
  url: data-model/johnnie-o-data-model.yml
- type: RateLimits
  url: rate-limits/johnnie-o-rate-limits.yml
- type: Plans
  url: plans/johnnie-o-plans-pricing.yml
- type: Packages
  url: packages/johnnie-o-packages.yml
- type: Documentation
  url: https://checkout.johnnie-o.com/llms.txt
- type: Support
  url: https://www.johnnie-o.com/contact-us
- type: HelpCenter
  url: https://www.johnnie-o.com/pages/faqs-new-icon
- type: TermsOfService
  url: https://www.johnnie-o.com/pages/terms-conditions
- type: PrivacyPolicy
  url: https://www.johnnie-o.com/pages/privacy
- type: SignUp
  url: https://www.johnnie-o.com/account/login
x-enrichment:
  date: '2026-08-23'
  status: enriched
  artifacts_added: 24
  pass: local-v1

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