Arlettie

Arlettie is a Paris-founded (1994) operator of invitation-only luxury and contemporary fashion private sales — "ventes privées" / sample sales — running showroom events in Paris, London, Milan and New York for more than 220 brand partners, alongside its online outlet store "Les échappées". Its machine-readable surface is not a developer program: it is an agent-commerce surface on the Les échappées storefront, which runs on Shopify and therefore serves a live unauthenticated UCP/MCP endpoint, agent instructions at /agents.md and /llms.txt, RFC 8414 + RFC 9728 OAuth discovery documents, and an introspectable Storefront GraphQL API — all on hosts Arlettie controls.

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

Arlettie’s developer surface includes documentation, engineering blog, support, signup flow, authentication, and 26 more developer resources.

🌐 Visit website 📡 Source on GitHub

27.9/100 thin ▬ flat Agent 28/100 agent aware saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessSelf serve

2 APIs 1 MCP Servers

Company Consumer Retail E-Commerce Fashion LuxuryPrivate SalesMarketplace Shopify Agent Commerce MCP UCP

Kin Score

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

Composite quality — 27.9/100 · thin

Contract Quality 0.0 / 25

Developer Ergonomics 7.1 / 20

Access Clarity 6.8 / 20

Operational Transparency 4.1 / 13

Contract Governance 2.2 / 12

Discoverability 7.6 / 10

Agent readiness — 28/100 · 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 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

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/arlettie: 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.

Arlettie Les échappées UCP/MCP Agent Commerce

Live, unauthenticated Model Context Protocol endpoint on the Les échappées storefront implementing the Universal Commerce Protocol (UCP) 2026-04-08. tools/list returns 13 tools ...

Arlettie Les échappées Storefront Data API

The Shopify Storefront GraphQL API and public JSON endpoints on the Les échappées storefront. Introspection answers unauthenticated at /api/2026-04/graphql.json (424 types; shop...

MCP Servers 1

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

Arlettie MCP Server

MCP SERVER

Pricing Plans 1

Published pricing tiers and plan structures.

Arlettie Plans Pricing

0 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Arlettie Rate Limits

2 limits

RATE LIMITS

Security Posture 2

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

Arlettie Authentication

none/oauth2/openIdConnect/apiKey · 4 schemes

SECURITY

Arlettie Domain Security

TLSv1.3 · HSTS

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Arlettie Scopes

4 scopes · authorizationCode

4 scopes

SCOPES

Resources

Get Started 1

Portal, sign-up, and the first successful call

SignUp

SignUp

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 5

Pagination, idempotency, versioning, errors, and events

Conformance

Conventions

Lifecycle

ErrorCatalog

DataModel

Build 3

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

ToolCrosswalk

ToolCrosswalk

Packages

Packages

Access & Security 3

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

OAuthScopes

OAuthScopes

Operate 4

Status, limits, changes, and where to get help

Support

HelpCenter

Deprecation

RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Plans

Plans

Company 5

The organization behind the API

Website

Website

Blog

Blog

LinkedIn

Instagram

Instagram

Facebook

Facebook

Other 2

Properties that don't map to a standard resource type

OnlineStore

OnlineStore

Pinterest

Source (apis.yml)

aid: arlettie
name: Arlettie
description: 'Arlettie is a Paris-founded (1994) operator of invitation-only luxury and contemporary fashion private sales
  — "ventes privées" / sample sales — running showroom events in Paris, London, Milan and New York for more than 220 brand
  partners, alongside its online outlet store "Les échappées". Its machine-readable surface is not a developer program: it
  is an agent-commerce surface on the Les échappées storefront, which runs on Shopify and therefore serves a live unauthenticated
  UCP/MCP endpoint, agent instructions at /agents.md and /llms.txt, RFC 8414 + RFC 9728 OAuth discovery documents, and an
  introspectable Storefront GraphQL API — all on hosts Arlettie controls.'
url: https://raw.githubusercontent.com/api-evangelist/arlettie/refs/heads/main/apis.yml
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
  - scopes
  - rate-limits
  - security
  generated: '2026-09-02'
  method: derived
image: https://static.arlettie.com/website/header-logo-paris.svg
x-type: company
x-source: serena-portfolio
specificationVersion: '0.23'
created: '2026-08-17'
modified: '2026-08-17'
x-enrichment:
  date: '2026-08-17'
  status: enriched
  artifacts_added: 22
  pass: local-v1
x-coverage:
  state: covered
  reason: null
  detail: Arlettie runs no developer program, but its Les échappées storefront serves a live unauthenticated UCP/MCP endpoint,
    agents.md, llms.txt and RFC 8414 + RFC 9728 OAuth discovery documents on a host Arlettie controls, plus an introspectable
    Storefront GraphQL API. The agent surface is real and was captured; there is no OpenAPI anywhere and no A2A agent card
    on any host.
  checked: '2026-08-17'
tags:
- Company
- Consumer
- Retail
- E-Commerce
- Fashion
- Luxury
- Private Sales
- Marketplace
- Shopify
- Agent Commerce
- MCP
- UCP
apis:
- aid: arlettie-les-echappees-ucp-mcp
  name: Arlettie Les échappées UCP/MCP Agent Commerce
  description: Live, unauthenticated Model Context Protocol endpoint on the Les échappées storefront implementing the Universal
    Commerce Protocol (UCP) 2026-04-08. tools/list returns 13 tools with full JSON Schema inputSchemas covering catalog search/lookup,
    product detail, cart lifecycle, checkout lifecycle and order retrieval. Payment completion requires contemporaneous human
    approval per the store's own published agent rules. This is a Shopify platform capability deployed for Arlettie's store,
    served from a host Arlettie controls.
  humanURL: https://lesechappees.arlettie.com/agents.md
  baseURL: https://lesechappees.arlettie.com/api/ucp/mcp
  tags:
  - MCP
  - UCP
  - Agent Commerce
  - Catalog
  - Cart
  - Checkout
  properties:
  - type: MCPServer
    url: mcp/arlettie-mcp.yml
  - type: ToolCrosswalk
    url: mcp/arlettie-tool-crosswalk.yml
  - type: Documentation
    url: https://lesechappees.arlettie.com/agents.md
- aid: arlettie-les-echappees-storefront
  name: Arlettie Les échappées Storefront Data API
  description: The Shopify Storefront GraphQL API and public JSON endpoints on the Les échappées storefront. Introspection
    answers unauthenticated at /api/2026-04/graphql.json (424 types; shop.name returns "Arlettie Les échappées"), and the
    store also serves unauthenticated /products.json, /collections.json, /products/{handle}.json and /collections/{handle}/products.json
    product feeds plus a sitemap index. Dated API versions 2025-01, 2026-01, 2026-04 and unstable all respond.
  humanURL: https://lesechappees.arlettie.com/
  baseURL: https://lesechappees.arlettie.com/api/2026-04/graphql.json
  tags:
  - GraphQL
  - Catalog
  - Product
  - E-Commerce
  tags_raw:
  - GraphQL
  - Catalog
  - Products
  - E-Commerce
  properties:
  - type: GraphQL
    url: https://lesechappees.arlettie.com/api/2026-04/graphql.json
  - type: Documentation
    url: https://lesechappees.arlettie.com/llms.txt
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/arlettie-domain-security.yml
- type: Website
  url: https://www.arlettie.com/
- type: Documentation
  url: https://lesechappees.arlettie.com/agents.md
- type: Blog
  url: https://www.arlettie.com/us/en/articles
- type: Support
  url: https://www.arlettie.com/us/en/contact
- type: HelpCenter
  url: https://www.arlettie.com/us/en/faq
- type: SignUp
  url: https://www.arlettie.com/us/en/login
- type: TermsOfService
  url: https://www.arlettie.com/us/en/terms-and-conditions
- type: PrivacyPolicy
  url: https://www.arlettie.com/us/en/privacy-policy
- type: GitHubOrganization
  url: https://github.com/arlettie
- type: OnlineStore
  url: https://lesechappees.arlettie.com/
- type: LinkedIn
  url: https://fr.linkedin.com/company/arlettie
- type: Instagram
  url: https://www.instagram.com/arlettieparis/
- type: Facebook
  url: https://fr-fr.facebook.com/ArlettieParis
- type: Pinterest
  url: https://www.pinterest.fr/arlettieparis/
- type: MCPServer
  url: mcp/arlettie-mcp.yml
- type: ToolCrosswalk
  url: mcp/arlettie-tool-crosswalk.yml
- type: AgentSkill
  url: skills/_index.yml
- type: LLMsTxt
  url: llms/arlettie-llms.txt
- type: WellKnown
  url: well-known/arlettie-well-known.yml
- type: Authentication
  url: authentication/arlettie-authentication.yml
- type: OAuthScopes
  url: scopes/arlettie-scopes.yml
- type: Conformance
  url: conformance/arlettie-conformance.yml
- type: Conventions
  url: conventions/arlettie-conventions.yml
- type: Lifecycle
  url: lifecycle/arlettie-lifecycle.yml
- type: Deprecation
  url: lifecycle/arlettie-lifecycle.yml
- type: RateLimits
  url: rate-limits/arlettie-rate-limits.yml
- type: ErrorCatalog
  url: errors/arlettie-problem-types.yml
- type: DataModel
  url: data-model/arlettie-data-model.yml
- type: Plans
  url: plans/arlettie-plans-pricing.yml
- type: Packages
  url: packages/arlettie-packages.yml

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