Modcloth

Modcloth is a vintage-inspired, indie and retro women's fashion retailer selling dresses, apparel, footwear, and accessories through its Shopify-hosted online store at modcloth.com. Surfaced as a portfolio company of Norwest Venture Partners, the store exposes a real agent-facing commerce surface: a Universal Commerce Protocol (UCP) shopping service over an MCP endpoint, Shopify customer-account OAuth 2.0 / OpenID Connect, published /llms.txt and /agents.md agent instructions, and read-only Shopify Storefront JSON for catalog and collections. Checkout requires contemporaneous buyer approval.

Modcloth publishes 2 APIs on the APIs.io network. Tagged areas include Company, Retail, E-Commerce, Fashion, and Apparel.

Modcloth’s developer surface includes documentation, authentication, and 13 more developer resources.

🌐 Visit website 📡 Source on GitHub

19.9/100 emerging ▬ flat Agent 21/100 agent aware saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessSelf serve

2 APIs 1 MCP Servers

Company Retail E-Commerce Fashion Apparel Shopify Agentic Commerce MCP

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 19.9/100 · emerging

Contract Quality 0.0 / 25

Developer Ergonomics 4.6 / 20

Access Clarity 5.5 / 20

Operational Transparency 0.0 / 13

Contract Governance 2.2 / 12

Discoverability 7.6 / 10

Agent readiness — 21/100 · agent aware

Machine-Readable Contract 0 / 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 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 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 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 5 / 5

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.

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 github.com/api-evangelist/modcloth: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 2

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

Modcloth UCP Agentic Commerce (MCP)

Universal Commerce Protocol shopping service exposed over MCP — search the catalog, build a cart, and run a buyer-approved checkout.

Modcloth Storefront JSON (read-only)

Read-only Shopify Storefront JSON for products, collections, and search — no authentication required.

MCP Servers 1

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

Modcloth MCP Server

MCP SERVER

Security Posture 2

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

Modcloth Authentication

oauth2/openIdConnect · 2 schemes

SECURITY

Modcloth Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Modcloth Scopes

4 scopes · authorizationCode

4 scopes

SCOPES

Resources

Get Started 1

Portal, sign-up, and the first successful call

Login

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

MCPServer

AgentSkill

LLMsTxt

WellKnown

Design & Contract 3

Pagination, idempotency, versioning, errors, and events

Conventions

Conventions

Conformance

Conformance

Lifecycle

Lifecycle

Access & Security 3

Authentication, authorization, and security posture

Authentication

Authentication

OAuthScopes

OAuthScopes

DomainSecurity

DomainSecurity

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 1

The organization behind the API

Website

Website

Source (apis.yml)

aid: modcloth
name: Modcloth
description: 'Modcloth is a vintage-inspired, indie and retro women''s fashion retailer selling dresses, apparel, footwear,
  and accessories through its Shopify-hosted online store at modcloth.com. Surfaced as a portfolio company of Norwest Venture
  Partners, the store exposes a real agent-facing commerce surface: a Universal Commerce Protocol (UCP) shopping service over
  an MCP endpoint, Shopify customer-account OAuth 2.0 / OpenID Connect, published /llms.txt and /agents.md agent instructions,
  and read-only Shopify Storefront JSON for catalog and collections. Checkout requires contemporaneous buyer approval.'
url: https://raw.githubusercontent.com/api-evangelist/modcloth/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- norwest-venture-partners
x-tier: profiled
x-tier-reason: agent-commerce-surface
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: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
specificationVersion: '0.23'
x-enrichment:
  date: '2026-07-20'
  status: enriched
  artifacts_added: 15
  pass: local-v1
created: '2026-07-17'
modified: '2026-07-20'
image: https://modcloth.com/cdn/shop/files/ModCloth_Logo_1200x628_15dc462f-196f-49fb-a86d-79841942351e.jpg?v=1750463087
tags:
- Company
- Retail
- E-Commerce
- Fashion
- Apparel
- Shopify
- Agentic Commerce
- MCP
tags_raw:
- Company
- Retail
- E-commerce
- Fashion
- Apparel
- Shopify
- Agentic Commerce
- MCP
apis:
- name: Modcloth UCP Agentic Commerce (MCP)
  description: Universal Commerce Protocol shopping service exposed over MCP — search the catalog, build a cart, and run a
    buyer-approved checkout.
  humanURL: https://modcloth.com/agents.md
  baseURL: https://modcloth.com/api/ucp/mcp
  properties:
  - type: MCPServer
    url: mcp/modcloth-mcp.yml
  - type: WellKnown
    url: well-known/modcloth-ucp.json
- name: Modcloth Storefront JSON (read-only)
  description: Read-only Shopify Storefront JSON for products, collections, and search — no authentication required.
  humanURL: https://modcloth.com/llms.txt
  baseURL: https://modcloth.com
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://modcloth.com
- type: Documentation
  url: https://modcloth.com/agents.md
- type: MCPServer
  url: mcp/modcloth-mcp.yml
- type: AgentSkill
  url: skills/modcloth-agentic-shopping.md
- type: LLMsTxt
  url: llms/modcloth-llms.txt
- type: WellKnown
  url: well-known/modcloth-well-known.yml
- type: Authentication
  url: authentication/modcloth-authentication.yml
- type: OAuthScopes
  url: scopes/modcloth-scopes.yml
- type: Conventions
  url: conventions/modcloth-conventions.yml
- type: Conformance
  url: conformance/modcloth-conformance.yml
- type: Lifecycle
  url: lifecycle/modcloth-lifecycle.yml
- type: DomainSecurity
  url: security/modcloth-domain-security.yml
- type: Login
  url: https://account.modcloth.com
- type: TermsOfService
  url: https://modcloth.com/policies/terms-of-service
- type: PrivacyPolicy
  url: https://modcloth.com/policies/privacy-policy

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