Winc

Winc is a direct-to-consumer online wine club and retailer (winc.com) offering curated, personalized wine subscriptions and single-bottle purchases matched to a member's palate profile. The winc.com storefront runs on Shopify and exposes a modern agentic-commerce surface: a hosted UCP (Universal Commerce Protocol) MCP endpoint, Shopify Customer Account API authentication (OpenID Connect), and published /llms.txt and /agents.md agent instructions that let AI shopping assistants discover the catalog, build carts, and drive buyer-approved checkout. Originally surfaced as a VC portfolio company and enriched from its public agent-facing surface by the API Evangelist enrichment pipeline.

Winc is listed with 1 API on the APIs.io network. Tagged areas include Company, Wine, E-Commerce, Retail, and Subscription.

Winc’s developer surface includes engineering blog, authentication, and 11 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

18.8/100 emerging ▬ flat Agent 15/100 agent aware Front door AI 1/6 silent Heartbeat 22/100 dormant saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

1 API 1 MCP Servers 1 Agent Skills

Company Wine E-Commerce Retail Subscription Agentic Commerce MCP Shopify Universal Commerce Protocol

Kin Score

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

Composite quality — 18.8/100 · emerging

Contract Quality 0.0 / 21

Developer Ergonomics 2.7 / 17

Access Clarity 3.6 / 17

Operational Transparency 0.0 / 11

Contract Governance 1.9 / 10

Discoverability 6.1 / 9

Regulatory Posture 4.3 / 15

Agent readiness — 15/100 · 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

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)

8 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 16.1 — up to +16.8 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/winc/apis.yml: open an issue on github.com/api-evangelist/winc 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.

Winc UCP Commerce MCP

Agentic-commerce API for the Winc storefront, implemented via the Shopify-native Universal Commerce Protocol (UCP). Agents discover capabilities at /.well-known/ucp and call com...

MCP Servers 1

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

Winc UCP Commerce MCP Server

Winc (winc.com) exposes a hosted, remote Model Context Protocol (MCP) server for agent-driven commerce, implemented via the Shopify-native Universal Commerce Protocol (UCP). Age...

MCP SERVER

Agent Skills 1

Packaged agent skills for driving this provider's APIs from an AI assistant.

winc-buy-wine

AGENT SKILL

Security Posture 1

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

Winc Authentication

1 scheme

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Winc Scopes

4 scopes

SCOPES

Resources

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

MCPServer

LLMsTxt

WellKnown

AgentSkill

Design & Contract 2

Pagination, idempotency, versioning, errors, and events

Conformance

Conformance

Conventions

Conventions

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

OAuthScopes

OAuthScopes

Commercial 2

Pricing, plans, and the legal terms of use

PrivacyPolicy

PrivacyPolicy

TermsOfService

TermsOfService

Company 3

The organization behind the API

Blog

Blog

BlogRSS

BlogRSS

Website

Website

Source (apis.yml)

aid: winc
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
  generated: '2026-11-06'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/winc.png
name: Winc
description: 'Winc is a direct-to-consumer online wine club and retailer (winc.com) offering curated, personalized wine subscriptions
  and single-bottle purchases matched to a member''s palate profile. The winc.com storefront runs on Shopify and exposes a
  modern agentic-commerce surface: a hosted UCP (Universal Commerce Protocol) MCP endpoint, Shopify Customer Account API authentication
  (OpenID Connect), and published /llms.txt and /agents.md agent instructions that let AI shopping assistants discover the
  catalog, build carts, and drive buyer-approved checkout. Originally surfaced as a VC portfolio company and enriched from
  its public agent-facing surface by the API Evangelist enrichment pipeline.'
url: https://raw.githubusercontent.com/api-evangelist/winc/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- 500-global
- bessemer-venture-partners
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-10-06'
tags:
- Company
- Wine
- E-Commerce
- Retail
- Subscription
- Agentic Commerce
- MCP
- Shopify
- Universal Commerce Protocol
tags_raw:
- Company
- Wine
- Ecommerce
- Retail
- Subscription
- Agentic Commerce
- MCP
- Shopify
- UCP
apis:
- name: Winc UCP Commerce MCP
  description: Agentic-commerce API for the Winc storefront, implemented via the Shopify-native Universal Commerce Protocol
    (UCP). Agents discover capabilities at /.well-known/ucp and call commerce tools over the MCP endpoint; checkout requires
    explicit buyer approval before payment.
  humanURL: https://www.winc.com
  baseURL: https://www.winc.com/api/ucp/mcp
  tags:
  - Agentic Commerce
  - MCP
  - Universal Commerce Protocol
  - Shopify
  tags_raw:
  - Agentic Commerce
  - MCP
  - UCP
  - Shopify
  properties:
  - type: MCPServer
    url: mcp/winc-mcp.yml
  - type: LLMsTxt
    url: llms/winc-llms.txt
  - type: Authentication
    url: authentication/winc-authentication.yml
  - type: OAuthScopes
    url: scopes/winc-scopes.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:
- url: https://www.winc.com/blogs/the-winc-blog
  type: Blog
- url: https://www.winc.com/blogs/the-winc-blog.atom
  type: BlogRSS
- type: Website
  url: https://winc.com
- type: MCPServer
  url: mcp/winc-mcp.yml
- type: LLMsTxt
  url: llms/winc-llms.txt
- type: WellKnown
  url: well-known/winc-well-known.yml
- type: Authentication
  url: authentication/winc-authentication.yml
- type: OAuthScopes
  url: scopes/winc-scopes.yml
- type: Conformance
  url: conformance/winc-conformance.yml
- type: Conventions
  url: conventions/winc-conventions.yml
- type: AgentSkill
  url: skills/_index.yml
- type: PrivacyPolicy
  url: https://www.winc.com/policies/privacy-policy
- type: TermsOfService
  url: https://www.winc.com/policies/terms-of-service
x-enrichment:
  date: '2026-07-21'
  status: enriched
  artifacts_added: 11
  pass: local-v1

Winc API — frequently asked questions

Does Winc have an API?

Yes. APIs.io lists 1 API from Winc, including Winc UCP Commerce MCP.

How do I authenticate with the Winc API?

Winc documents its authentication (1 scheme). The details are profiled on APIs.io as Winc Authentication.

Does Winc have an MCP server?

Yes. APIs.io lists 1 MCP server for Winc: Winc (winc.com) exposes a hosted, remote Model Context Protocol (MCP) server for agent-driven commerce, implemented via the Shopify-native Universal Commerce Protocol (UCP). Agents discover capabiliti

Is the Winc API ready for AI agents?

Winc has a Kin Score of 18.8 out of 100 (emerging) and an Agent Readiness score of 14.7 (agent-aware), scored by API Evangelist on 2026-11-06.

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