Brooklinen

Brooklinen is a direct-to-consumer home essentials brand founded in Brooklyn, New York in 2014 by Rich and Vicki Fulop, selling sheets, duvet covers, comforters, pillows, towels, robes and loungewear direct from the mill to the customer. Brooklinen publishes no traditional developer API program, but its storefront runs on Shopify and exposes a substantial machine-readable agent surface: an agent instruction document at /agents.md (mirrored at /llms.txt), a Universal Commerce Protocol (UCP) merchant profile at /.well-known/ucp declaring protocol versions 2026-04-08 and 2026-01-23, a live UCP/MCP JSON-RPC endpoint at /api/ucp/mcp for agent-driven catalog search, cart, checkout and order operations, OAuth 2.0 / OIDC customer-account authorization metadata at /.well-known/oauth-authorization-server and /.well-known/oauth-protected-resource, and the read-only Shopify storefront JSON endpoints for products, collections, search suggestions and cart. Checkout explicitly requires contemporaneous human buyer approval.

Brooklinen publishes 1 API on the APIs.io network. Tagged areas include E-Commerce, Retail, Direct to Consumer, Home Goods, and Bedding.

Brooklinen’s developer surface includes documentation, API reference, getting-started guide, support, engineering blog, signup flow, authentication, and 22 more developer resources.

🌐 Visit website 📡 Source on GitHub

30.0/100 thin ▼ -5.1 Agent 25/100 agent aware Front door AI 1/6 silent saas Full breakdown ↓
scored 2026-10-04 · rubric v0.23.0

AccessSelf serve

1 API 1 MCP Servers

E-Commerce Retail Direct to Consumer Home Goods Bedding Shopify Agentic Commerce Universal Commerce Protocol MCP Agent-Native Catalog Checkout

What this lets a business do 1

Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →

Product Information Management

BC-2370

Products

Kin Score

Kin Score How this is scored →
scored 2026-10-04 · rubric v0.23.0

Composite quality — 30.0/100 · thin

Contract Quality 0.4 / 21

Developer Ergonomics 9.3 / 17

Access Clarity 5.8 / 17

Operational Transparency 0.3 / 11

Contract Governance 1.9 / 10

Discoverability 6.4 / 9

Regulatory Posture 4.7 / 15

Agent readiness — 25/100 · 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 9 / 9

Stable Error Semantics 8 / 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 5 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 5 / 5

Regulatory Posture applies to this provider. Its tags matched the Payments 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/.

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/brooklinen: 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 1

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

Brooklinen UCP / MCP Agentic Commerce API

Live Universal Commerce Protocol (UCP) endpoint exposed over MCP JSON-RPC at https://www.brooklinen.com/api/ucp/mcp, advertised by the store's own /agents.md, /robots.txt and /....

Open Collections 1

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

API Collection

OPEN COLLECTION

MCP Servers 1

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

Brooklinen MCP Server

Remote MCP server at www.brooklinen.com over HTTP; 13 tools listed.

MCP SERVER

Security Posture 2

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

Brooklinen Authentication

oauth2/openIdConnect/none · 4 schemes

SECURITY

Brooklinen Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Brooklinen Scopes

4 scopes · authorizationCode

4 scopes

SCOPES

Resources

Get Started 3

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

SignUp

SignUp

Login

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

MCPServer

LLMsTxt

WellKnown

AgentSkill

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Conventions

Idempotency

Lifecycle

Conformance

ErrorCatalog

DataModel

Build 2

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

ToolCrosswalk

ToolCrosswalk

Access & Security 3

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

OAuthScopes

OAuthScopes

Operate 2

Status, limits, changes, and where to get help

Support

Support

HelpCenter

HelpCenter

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 3

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

Overlay

Overlay

SecondaryMarketListing

SecondaryMarketListing

Source (apis.yml)

aid: brooklinen
name: Brooklinen
description: 'Brooklinen is a direct-to-consumer home essentials brand founded in Brooklyn, New York in 2014 by Rich and Vicki
  Fulop, selling sheets, duvet covers, comforters, pillows, towels, robes and loungewear direct from the mill to the customer.
  Brooklinen publishes no traditional developer API program, but its storefront runs on Shopify and exposes a substantial
  machine-readable agent surface: an agent instruction document at /agents.md (mirrored at /llms.txt), a Universal Commerce
  Protocol (UCP) merchant profile at /.well-known/ucp declaring protocol versions 2026-04-08 and 2026-01-23, a live UCP/MCP
  JSON-RPC endpoint at /api/ucp/mcp for agent-driven catalog search, cart, checkout and order operations, OAuth 2.0 / OIDC
  customer-account authorization metadata at /.well-known/oauth-authorization-server and /.well-known/oauth-protected-resource,
  and the read-only Shopify storefront JSON endpoints for products, collections, search suggestions and cart. Checkout explicitly
  requires contemporaneous human buyer approval.'
url: https://raw.githubusercontent.com/api-evangelist/brooklinen/refs/heads/main/apis.yml
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - 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
  - security
  generated: '2026-09-02'
  method: derived
image: https://cdn.shopify.com/s/files/1/0951/7126/files/0126_Shopify_Social_Image.jpg?v=1765839763
x-type: company
x-source: harvest:secondary-market
specificationVersion: '0.23'
created: '2026-08-02'
modified: '2026-08-02'
tags:
- E-Commerce
- Retail
- Direct to Consumer
- Home Goods
- Bedding
- Shopify
- Agentic Commerce
- Universal Commerce Protocol
- MCP
- Agent-Native
- Catalog
- Checkout
tags_raw:
- ecommerce
- retail
- direct-to-consumer
- home-goods
- bedding
- shopify
- agentic-commerce
- universal-commerce-protocol
- mcp
- agent-native
- catalog
- checkout
apis:
- name: Brooklinen UCP / MCP Agentic Commerce API
  description: Live Universal Commerce Protocol (UCP) endpoint exposed over MCP JSON-RPC at https://www.brooklinen.com/api/ucp/mcp,
    advertised by the store's own /agents.md, /robots.txt and /.well-known/ucp discovery profile. Provides agent-driven catalog
    search and lookup, cart management, checkout creation/update/completion and order retrieval against the Brooklinen storefront.
    Requires a resolvable UCP agent profile (meta.ucp-agent.profile / UCP-Agent header) — anonymous tools/list returns JSON-RPC
    error -32001 invalid_profile_url. Payment completion requires explicit human buyer approval.
  humanURL: https://www.brooklinen.com/agents.md
  baseURL: https://www.brooklinen.com/api/ucp/mcp
  tags:
  - Agentic Commerce
  - Universal Commerce Protocol
  - MCP
  - Agent-Native
  - Checkout
  - Catalog
  tags_raw:
  - agentic-commerce
  - universal-commerce-protocol
  - mcp
  - agent-native
  - checkout
  - catalog
  properties:
  - type: MCPServer
    url: mcp/brooklinen-mcp.yml
  - type: MCPServer
    url: https://www.brooklinen.com/api/ucp/mcp
  - type: ToolCrosswalk
    url: mcp/brooklinen-tool-crosswalk.yml
  - type: Documentation
    url: https://www.brooklinen.com/agents.md
  - type: WellKnown
    url: well-known/brooklinen-ucp.json
  - type: Authentication
    url: authentication/brooklinen-authentication.yml
  - type: OAuthScopes
    url: scopes/brooklinen-scopes.yml
  - type: Idempotency
    url: conventions/brooklinen-conventions.yml
  - type: ErrorCatalog
    url: errors/brooklinen-problem-types.yml
  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: CapabilityMap
  url: capabilities/brooklinen-capability-edges.yml
  name: Brooklinen Business Capability Map
- type: DomainSecurity
  url: security/brooklinen-domain-security.yml
- type: Website
  url: https://www.brooklinen.com/
- type: Documentation
  url: https://www.brooklinen.com/agents.md
- type: APIReference
  url: https://www.brooklinen.com/agents.md
- type: GettingStarted
  url: https://www.brooklinen.com/agents.md
- type: Support
  url: https://www.brooklinen.com/pages/contact
- type: HelpCenter
  url: https://www.brooklinen.com/pages/faq
- type: Blog
  url: https://www.brooklinen.com/blogs/brookliving
- type: GitHubOrganization
  url: https://github.com/Brooklinen
- type: SignUp
  url: https://www.brooklinen.com/pages/sign-up
- type: Login
  url: https://www.brooklinen.com/account/login
- type: TermsOfService
  url: https://www.brooklinen.com/policies/terms-of-service
- type: PrivacyPolicy
  url: https://www.brooklinen.com/policies/privacy-policy
- type: MCPServer
  url: mcp/brooklinen-mcp.yml
- type: ToolCrosswalk
  url: mcp/brooklinen-tool-crosswalk.yml
- type: LLMsTxt
  url: llms/brooklinen-llms.txt
- type: WellKnown
  url: well-known/brooklinen-well-known.yml
- type: Authentication
  url: authentication/brooklinen-authentication.yml
- type: OAuthScopes
  url: scopes/brooklinen-scopes.yml
- type: Conventions
  url: conventions/brooklinen-conventions.yml
- type: Idempotency
  url: conventions/brooklinen-conventions.yml
- type: Lifecycle
  url: lifecycle/brooklinen-lifecycle.yml
- type: Conformance
  url: conformance/brooklinen-conformance.yml
- type: ErrorCatalog
  url: errors/brooklinen-problem-types.yml
- type: DataModel
  url: data-model/brooklinen-data-model.yml
- type: AgentSkill
  url: skills/_index.yml
- type: Overlay
  url: overlays/brooklinen-storefront-overlay.yaml
- type: SecondaryMarketListing
  url: https://forgeglobal.com/brooklinen_stock/
x-enrichment:
  date: '2026-08-02'
  status: enriched
  artifacts_added: 22
  pass: local-v1

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