Barn & Willow

Barn & Willow is a direct-to-consumer home furnishings brand specializing in made-to-measure window treatments — custom drapery, curtains, roman shades and blinds in natural fabrics such as linen, cotton and velvet. The company sells online at barnandwillow.com, a Shopify-hosted storefront, offering free fabric swatches, measuring guides and design consultations. Surfaced as a portfolio company of 500 Global and added to the API Evangelist network, the storefront exposes a real agentic-commerce surface: a Universal Commerce Protocol (UCP) merchant profile and hosted MCP endpoint for agent-driven shopping, Shopify Customer Account OAuth 2.0 / OpenID Connect authentication, and an llms.txt agent-instructions document.

Barn & Willow is listed with 1 API on the APIs.io network. Tagged areas include Company, E-Commerce, Retail, Home Furnishings, and Window Treatments.

Barn & Willow’s developer surface includes authentication and 9 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

18.3/100 emerging ▬ flat Agent 14/100 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 →

1 API 1 MCP Servers

Company E-Commerce Retail Home FurnishingsWindow TreatmentsAgentic Commerce Shopify Direct to Consumer

Kin Score

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

Composite quality — 18.3/100 · emerging

Contract Quality 0.0 / 21

Developer Ergonomics 2.0 / 17

Access Clarity 3.6 / 17

Operational Transparency 0.0 / 11

Contract Governance 1.9 / 10

Discoverability 5.7 / 9

Regulatory Posture 5.1 / 15

Agent readiness — 14/100 · 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 0 / 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

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)
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)

9 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
Developer Ergonomics scores 11.9 — up to +17.6 composite points
Access Clarity scores 21.1 — up to +15.8 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/barn-and-willow/apis.yml: open an issue on github.com/api-evangelist/barn-and-willow 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 →

Standards implemented 2

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)

measured — observed by APIs.io (shopify)

APIs 1

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

Barn & Willow Agentic Commerce (UCP)

The storefront's agent-facing commerce surface, implementing the Universal Commerce Protocol (UCP) over a hosted MCP endpoint for catalog search, cart, checkout, fulfillment and...

MCP Servers 1

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

Barn & Willow MCP Server

Remote MCP server at barnandwillow.com over HTTP; 5 tools listed.

MCP SERVER

Security Posture 2

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

Barn And Willow Authentication

oauth2/openIdConnect · 1 scheme

SECURITY

Barn And Willow Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Barn And Willow Scopes

4 scopes · authorizationCode

4 scopes

SCOPES

Resources

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

MCPServer

MCPServer

LLMsTxt

LLMsTxt

WellKnown

WellKnown

Design & Contract 1

Pagination, idempotency, versioning, errors, and events

Conformance

Conformance

Access & Security 3

Authentication, authorization, and security posture

Authentication

Authentication

OAuthScopes

OAuthScopes

DomainSecurity

DomainSecurity

Commercial 2

Pricing, plans, and the legal terms of use

PrivacyPolicy

PrivacyPolicy

TermsOfService

TermsOfService

Company 1

The organization behind the API

Website

Website

Source (apis.yml)

aid: barn-and-willow
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
  - security
  generated: '2026-11-06'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/barn-and-willow.png
name: Barn & Willow
description: 'Barn & Willow is a direct-to-consumer home furnishings brand specializing in made-to-measure window treatments
  — custom drapery, curtains, roman shades and blinds in natural fabrics such as linen, cotton and velvet. The company sells
  online at barnandwillow.com, a Shopify-hosted storefront, offering free fabric swatches, measuring guides and design consultations.
  Surfaced as a portfolio company of 500 Global and added to the API Evangelist network, the storefront exposes a real agentic-commerce
  surface: a Universal Commerce Protocol (UCP) merchant profile and hosted MCP endpoint for agent-driven shopping, Shopify
  Customer Account OAuth 2.0 / OpenID Connect authentication, and an llms.txt agent-instructions document.'
url: https://raw.githubusercontent.com/api-evangelist/barn-and-willow/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- 500-global
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-18'
tags:
- Company
- E-Commerce
- Retail
- Home Furnishings
- Window Treatments
- Agentic Commerce
- Shopify
- Direct to Consumer
tags_raw:
- Company
- E-commerce
- Retail
- Home Furnishings
- Window Treatments
- Agentic Commerce
- Shopify
- Direct to Consumer
apis:
- name: Barn & Willow Agentic Commerce (UCP)
  description: The storefront's agent-facing commerce surface, implementing the Universal Commerce Protocol (UCP) over a hosted
    MCP endpoint for catalog search, cart, checkout, fulfillment and order tracking. Checkout requires human buyer approval.
  humanURL: https://barnandwillow.com/llms.txt
  properties:
  - type: MCPServer
    url: mcp/barn-and-willow-mcp.yml
  - type: LLMsTxt
    url: llms/barn-and-willow-llms.txt
  - type: Authentication
    url: authentication/barn-and-willow-authentication.yml
  - type: OAuthScopes
    url: scopes/barn-and-willow-scopes.yml
  - type: OpenIDConnect
    url: well-known/barn-and-willow-openid-configuration.json
  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: Website
  url: https://barnandwillow.com
- type: MCPServer
  url: mcp/barn-and-willow-mcp.yml
- type: LLMsTxt
  url: llms/barn-and-willow-llms.txt
- type: WellKnown
  url: well-known/barn-and-willow-well-known.yml
- type: Authentication
  url: authentication/barn-and-willow-authentication.yml
- type: OAuthScopes
  url: scopes/barn-and-willow-scopes.yml
- type: Conformance
  url: conformance/barn-and-willow-conformance.yml
- type: DomainSecurity
  url: security/barn-and-willow-domain-security.yml
- type: PrivacyPolicy
  url: https://barnandwillow.com/policies/privacy-policy
- type: TermsOfService
  url: https://barnandwillow.com/policies/terms-of-service
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

Barn & Willow API — frequently asked questions

Does Barn & Willow have an API?

Yes. APIs.io lists 1 API from Barn & Willow, including Barn & Willow Agentic Commerce (UCP).

How do I authenticate with the Barn & Willow API?

Barn & Willow documents its authentication (oauth2/openIdConnect · 1 scheme). The details are profiled on APIs.io as Barn And Willow Authentication.

Does Barn & Willow have an MCP server?

Yes. APIs.io lists 1 MCP server for Barn & Willow: Remote MCP server at barnandwillow.com over HTTP; 5 tools listed.

Is the Barn & Willow API ready for AI agents?

Barn & Willow has a Kin Score of 18.3 out of 100 (emerging) and an Agent Readiness score of 13.8 (agent-aware), scored by API Evangelist on 2026-11-06.

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