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 is listed with 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 25 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

28.1/100 thin ▬ flat Agent 37/100 agent ready Front door AI 1/6 silent saas Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

2 APIs 1 MCP Servers 2 Agent Skills

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

Kin Score

Kin Score How this is scored →
scored 2026-11-13 · rubric v0.28.0

Composite quality — 28.1/100 · thin

Contract Quality 2.0 / 21

Developer Ergonomics 4.8 / 17

Access Clarity 7.2 / 17

Operational Transparency 0.0 / 11

Contract Governance 1.9 / 10

Discoverability 6.4 / 9

Regulatory Posture 4.3 / 15

Agent readiness — 37/100 · 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 Well-Known Document 5 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author Ask about this →
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented) Ask about this →
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0 Ask about this →
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link Ask about this →
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document Ask about this →
Typed Event Surface +6 pts — AsyncAPI document, OR webhooks/callbacks objects in the as-published OpenAPI, OR common[].type includes Webhooks Ask about this →

4 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Contract Quality scores 9.3 — up to +22.7 composite points Ask about this →
Developer Ergonomics scores 28.0 — up to +14.4 composite points Ask about this →
Operational Transparency scores 0.0 — up to +13.0 composite points Ask about this →

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

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Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from the provider profile at artifacts.apis.io/johnnie-o/apis.yml: open an issue on github.com/api-evangelist/johnnie-o to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
Fashion & Apparel (apparel, footwear, textiles)	undeclared	-	-	-

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

Standards implemented 3

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

Model Context Protocol (MCP)

measured — observed by APIs.io (platform)

OAuth 2.0 Protected Resource Metadata

measured — observed by APIs.io (verified)

Universal Commerce Protocol (UCP)

measured — observed by APIs.io (shopify)

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

Remote MCP server at checkout.johnnie-o.com over HTTP; 13 tools listed.

MCP SERVER

Agent Skills 2

Packaged agent skills for driving this provider's APIs from an AI assistant.

johnnie-o-agentic-checkout

AGENT SKILL

johnnie-o-browse-catalog

AGENT SKILL

Johnnie-O API pricing

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

Terms of Service 1

What its API terms permit and prohibit, quoted from its own page.

Johnnie-O

6 quoted statements, read from Johnnie-O's own page on 2026-11-09.

TERMS

Privacy & Data 1

Its role, the data it processes, retention and transfers, quoted from its own privacy page.

Johnnie-O

18 quoted statements, read from Johnnie-O's own page on 2026-11-09.

PRIVACY

Eligibility 1

Who may sign up and where, quoted from its own terms.

Johnnie-O

3 quoted statements, read from Johnnie-O's own page on 2026-11-09.

ELIGIBILITY

AI Preferences 1

Its stance on AI training, inference and agents, quoted from its own pages.

Johnnie-O

1 quoted statement, read from Johnnie-O's own page on 2026-11-09.

AI PREFS

Data License 1

How its data and outputs may be reused, quoted from its own terms.

Johnnie-O

1 quoted statement, read from Johnnie-O's own page on 2026-11-09.

LICENSE

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

4 scopes · authorization_code

4 scopes

SCOPES

Resources

Get Started 1

Portal, sign-up, and the first successful call

SignUp

SignUp

Documentation 3

Reference material describing how the API behaves

GraphQL

GraphQL

Documentation

Documentation

AIPreferences

AIPreferences

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

MCPServer

LLMsTxt

AgentSkill

WellKnown

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Conformance

Conventions

Lifecycle

ErrorCatalog

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 5

Pricing, plans, and the legal terms of use

Plans

TermsOfService

PrivacyPolicy

UsageTerms

DataLicense

Company 1

The organization behind the API

Website

Website

Other 2

Properties that don't map to a standard resource type

DataProcessing

DataProcessing

Eligibility

Eligibility

Source (apis.yml)

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.'
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  - scopes
  - rate-limits
  - security
  generated: '2026-11-13'
  method: derived
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
  - Product
  - Collection
  - 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/
  x-surface: platform-generated
  x-platform: shopify
  x-platform-surface: storefront-graphql
- 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
  - Universal Commerce Protocol
  - Cart
  - Checkout
  - Catalog
  - Order
  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/
  x-surface: platform-generated
  x-platform: shopify
  x-platform-surface: ucp
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
- type: UsageTerms
  url: terms/johnnie-o-terms-of-service.yml
- type: DataProcessing
  url: privacy/johnnie-o-privacy-policy.yml
- type: Eligibility
  url: eligibility/johnnie-o-eligibility.yml
- type: AIPreferences
  url: ai-preferences/johnnie-o-ai-preferences.yml
- type: DataLicense
  url: data-license/johnnie-o-data-license.yml
x-enrichment:
  date: '2026-08-23'
  status: enriched
  artifacts_added: 24
  pass: local-v1

Johnnie-O API — frequently asked questions

Does Johnnie-O have an API?

Yes. APIs.io lists 2 APIs from Johnnie-O, including Johnnie-O Storefront GraphQL API and Johnnie-O UCP Commerce MCP Endpoint.

How do I authenticate with the Johnnie-O API?

Johnnie-O documents its authentication (4 schemes). The details are profiled on APIs.io as Johnnie-O Authentication.

Does Johnnie-O have an MCP server?

Yes. APIs.io lists 1 MCP server for Johnnie-O: Remote MCP server at checkout.johnnie-o.com over HTTP; 13 tools listed.

Is the Johnnie-O API ready for AI agents?

Johnnie-O has a Kin Score of 28.1 out of 100 (thin) and an Agent Readiness score of 36.7 (agent-ready), scored by API Evangelist on 2026-11-13.

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