Glossier

Glossier is a direct-to-consumer beauty and personal-care brand (skincare, makeup, body, and fragrance) that sells through its own Shopify-powered storefront at glossier.com. It reached the API Evangelist network as a portfolio company of Forerunner Ventures, Index Ventures, IVP, and Thrive Capital. Glossier does not publish a traditional developer program, but its storefront is agent-native: it implements the Universal Commerce Protocol (UCP) with a live MCP endpoint for agent-driven catalog search, cart, and buyer-approved checkout, publishes /llms.txt and /agents.md agent instructions, and exposes Shopify Customer Account OAuth2/OIDC authentication with a discoverable authorization server.

Glossier publishes 1 API on the APIs.io network. Tagged areas include Company, Consumer, Beauty, Cosmetics, and Ecommerce.

Glossier’s developer surface includes authentication, documentation, and 12 more developer resources.

🌐 Visit website 📡 Source on GitHub
20.0/100 emerging Agent 25/100 agent aware Full breakdown ↓
scored 2026-07-20 · rubric v0.4
1 APIs 1 MCP Servers 0 Features
CompanyConsumerBeautyCosmeticsEcommerceRetailAgent CommerceUniversal Commerce ProtocolShopifyMCP

API Rating

API Evangelist API Evangelist Rating How this is scored →
scored 2026-07-20 · rubric v0.4
Composite quality — 20.0/100 · emerging
Contract Quality 0.0 / 25
Developer Ergonomics 5.7 / 20
Commercial Clarity 4.2 / 20
Operational Transparency 1.4 / 13
Governance 0.0 / 12
Discoverability 8.8 / 10
Agent readiness — 25/100 · agent aware
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 15
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 4 / 4
Consent & Bot Identity 0 / 3
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/glossier: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs

Glossier Agent Commerce (UCP / MCP)

Agent-facing commerce surface for the Glossier storefront implementing the Universal Commerce Protocol over MCP: catalog search, cart, checkout, and fulfillment with a buyer-app...

MCP Servers

glossier-mcp.yml

MCP SERVER

Resources

Documentation 1

Reference material describing how the API behaves

Documentation
Documentation

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

MCPServer
MCPServer
 LLMsTxt
LLMsTxt
 WellKnown
WellKnown

Design & Contract 2

Pagination, idempotency, versioning, errors, and events

Conformance
Conformance
 Conventions
Conventions

Access & Security 5

Authentication, authorization, and security posture

Authentication
Authentication
 OAuthScopes
OAuthScopes
 VulnerabilityDisclosure
VulnerabilityDisclosure
 Security
Security
 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)

apis.yml Raw ↑ 
aid: glossier
name: Glossier
description: 'Glossier is a direct-to-consumer beauty and personal-care brand (skincare, makeup, body, and fragrance) that
  sells through its own Shopify-powered storefront at glossier.com. It reached the API Evangelist network as a portfolio company
  of Forerunner Ventures, Index Ventures, IVP, and Thrive Capital. Glossier does not publish a traditional developer program,
  but its storefront is agent-native: it implements the Universal Commerce Protocol (UCP) with a live MCP endpoint for agent-driven
  catalog search, cart, and buyer-approved checkout, publishes /llms.txt and /agents.md agent instructions, and exposes Shopify
  Customer Account OAuth2/OIDC authentication with a discoverable authorization server.'
url: https://raw.githubusercontent.com/api-evangelist/glossier/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- forerunner-ventures
- index-ventures
- ivp
- thrive-capital
x-tier: profiled
x-tier-reason: agent-commerce-surface-found
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-19'
tags:
- Company
- Consumer
- Beauty
- Cosmetics
- Ecommerce
- Retail
- Agent Commerce
- Universal Commerce Protocol
- Shopify
- MCP
apis:
- name: Glossier Agent Commerce (UCP / MCP)
  description: 'Agent-facing commerce surface for the Glossier storefront implementing the Universal Commerce Protocol over
    MCP: catalog search, cart, checkout, and fulfillment with a buyer-approval invariant on payment. Tool schemas are gated
    behind a UCP agent-profile identity check.'
  humanURL: https://www.glossier.com/llms.txt
  baseURL: https://glossier-admin.myshopify.com/api/ucp/mcp
  tags:
  - Agent Commerce
  - MCP
  - Universal Commerce Protocol
  - Ecommerce
  properties:
  - type: MCPServer
    url: mcp/glossier-mcp.yml
  - type: LLMsTxt
    url: llms/glossier-llms.txt
  - type: WellKnown
    url: well-known/glossier-well-known.yml
  - type: Authentication
    url: authentication/glossier-authentication.yml
  - type: OAuthScopes
    url: scopes/glossier-scopes.yml
  - type: Conformance
    url: conformance/glossier-conformance.yml
  - type: Conventions
    url: conventions/glossier-conventions.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: MCPServer
  url: mcp/glossier-mcp.yml
- type: LLMsTxt
  url: llms/glossier-llms.txt
- type: WellKnown
  url: well-known/glossier-well-known.yml
- type: Authentication
  url: authentication/glossier-authentication.yml
- type: OAuthScopes
  url: scopes/glossier-scopes.yml
- type: Conformance
  url: conformance/glossier-conformance.yml
- type: Conventions
  url: conventions/glossier-conventions.yml
- type: VulnerabilityDisclosure
  url: security/glossier-vulnerability-disclosure.yml
- type: Security
  url: https://www.glossier.com/pages/responsible-disclosure
- type: DomainSecurity
  url: security/glossier-domain-security.yml
- type: Documentation
  url: https://ucp.dev/2026-04-08/specification/overview/
- type: PrivacyPolicy
  url: https://www.glossier.com/policies/privacy-policy
- type: TermsOfService
  url: https://www.glossier.com/policies/terms-of-service
- type: Website
  url: https://www.glossier.com
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence