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 is listed with 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 📡 Profile data on GitHub

30.7/100 thin ▬ flat Agent 26/100 agent aware Front door AI 1/6 silent saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

2 APIs 1 MCP Servers

Company Consumer Retail E-Commerce Fashion LuxuryPrivate SalesMarketplace Shopify Agentic Commerce MCP Universal Commerce Protocol

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 30.7/100 · thin

Contract Quality 0.0 / 21

Developer Ergonomics 6.1 / 17

Access Clarity 5.8 / 17

Operational Transparency 3.5 / 11

Contract Governance 1.9 / 10

Discoverability 6.4 / 9

Regulatory Posture 5.1 / 15

Agent readiness — 26/100 · 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

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):

Machine-Readable Contract +18 pts — api_specs includes an OpenAPI document
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
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)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document

5 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 0.0 — up to +25.0 composite points
Access Clarity scores 34.2 — up to +13.2 composite points
Developer Ergonomics scores 35.7 — up to +12.9 composite points

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.

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/arlettie/apis.yml: open an issue on github.com/api-evangelist/arlettie 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 4

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)

Universal Commerce Protocol (UCP)

tagged — the provider's own APIs.json carries the standard as a tag; implementation not verified

Agent Skills

measured — observed by APIs.io (published)

OAuth 2.0 Protected Resource Metadata

measured — observed by APIs.io (verified)

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

Remote MCP server at lesechappees.arlettie.com; 13 tools listed.

MCP SERVER

Arlettie API pricing

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: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  probe_state: covered
  source:
  - authentication
  - scopes
  - rate-limits
  - security
  generated: '2026-11-06'
  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
- Agentic Commerce
- MCP
- Universal Commerce Protocol
tags_raw:
- Company
- Consumer
- Retail
- E-Commerce
- Fashion
- Luxury
- Private Sales
- Marketplace
- Shopify
- Agent Commerce
- MCP
- UCP
apis:
- aid: arlettie: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
  - Universal Commerce Protocol
  - Agentic Commerce
  - Catalog
  - Cart
  - Checkout
  tags_raw:
  - 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
  x-surface: platform-generated
  x-platform: shopify
  x-platform-surface: ucp
- aid: arlettie: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
  x-surface: platform-generated
  x-platform: shopify
  x-platform-surface: storefront-graphql
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

Arlettie API — frequently asked questions

Does Arlettie have an API?

Yes. APIs.io lists 2 APIs from Arlettie, including Arlettie Les échappées UCP/MCP Agent Commerce and Arlettie Les échappées Storefront Data API.

How do I authenticate with the Arlettie API?

Arlettie documents its authentication (none/oauth2/openIdConnect/apiKey · 4 schemes). The details are profiled on APIs.io as Arlettie Authentication.

Does Arlettie have an MCP server?

Yes. APIs.io lists 1 MCP server for Arlettie: Remote MCP server at lesechappees.arlettie.com; 13 tools listed.

Is the Arlettie API ready for AI agents?

Arlettie has a Kin Score of 30.7 out of 100 (thin) and an Agent Readiness score of 26.4 (agent-aware), scored by API Evangelist on 2026-11-06.

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