Julep Beauty

Julep is a direct-to-consumer beauty brand selling makeup, skincare, nail polish, and value sets, founded in Seattle by Jane Park and backed by Andreessen Horowitz, Maveron, and others before its 2016 acquisition. The brand positions itself around effortless, low-effort beauty for women who "do a lot but don't want to spend a lot of time doing their makeup," with skincare inspired by its founder's Korean heritage. Julep runs its storefront on Shopify at www.julep.com and also sells through Amazon and Target. It is not an API platform and publishes no developer program, but the storefront carries a substantive agent-facing surface: published agent instructions at /agents.md and /llms.txt, a Universal Commerce Protocol merchant profile at /.well-known/ucp, a live MCP commerce endpoint, OpenID Connect discovery for customer accounts, and a public read-only catalog JSON API.

Julep Beauty is listed with 5 APIs on the APIs.io network, including Cart API, Discovery API, Search API, and 2 more. Tagged areas include Company, Beauty, Cosmetics, Skincare, and Retail.

The Julep Beauty catalog on APIs.io includes 1 Spectral governance ruleset.

Julep Beauty’s developer surface includes authentication, documentation, support, engineering blog, signup flow, and 20 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

30.2/100 thin ▬ flat Agent 31/100 agent ready Front door AI 1/6 silent saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

5 APIs 1 MCP Servers 2 Agent Skills

Company Beauty Cosmetics Skincare Retail E-Commerce Direct to Consumer Shopify Agentic Commerce Universal Commerce Protocol

Kin Score

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

Composite quality — 30.2/100 · thin

Contract Quality 2.7 / 21

Developer Ergonomics 6.1 / 17

Access Clarity 5.8 / 17

Operational Transparency 0.3 / 11

Contract Governance 3.2 / 10

Discoverability 5.1 / 9

Regulatory Posture 5.1 / 15

Agent readiness — 31/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 6 / 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 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 4 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 5 / 5

Pagination 0 / 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 does not apply to this provider. The published contracts declare no write operations, and a read-only API cannot create-or-update. The facet is excluded from this provider's denominator entirely — not scored zero. A reference or data API is not deficient for being unable to upsert.

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):

Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
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
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented)
Typed Event Surface +6 pts — AsyncAPI document, OR webhooks/callbacks objects in the as-published OpenAPI, OR common[].type includes Webhooks

4 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 12.9 — up to +21.8 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/julep-beauty/apis.yml: open an issue on github.com/api-evangelist/julep-beauty 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 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.

Universal Commerce Protocol (UCP)

measured — observed by APIs.io (shopify)

Model Context Protocol (MCP)

measured — observed by APIs.io (documented)

Agent Skills

measured — observed by APIs.io (published)

OpenAPI

measured — observed by APIs.io (published)

APIs 5

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

Julep UCP Commerce MCP Endpoint

Julep's agent-commerce surface. The storefront advertises a Universal Commerce Protocol merchant profile and a live JSON-RPC Model Context Protocol endpoint covering catalog sea...

Julep Beauty Cart API

Read-only view of the current session cart.

Julep Beauty Discovery API

Store metadata and agent-discovery documents.

Julep Beauty Search API

Storefront product search.

Julep Beauty Storefront JSON (Shopify)

The Shopify Storefront JSON surface that Shopify generates for every Shopify site or store, served on julep.com. Catalogued as one platform-generated record, not as separate API...

Open Collections 4

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

Julep Storefront Read-Only JSON Cart API

OPEN COLLECTION

Julep Storefront Read-Only JSON Cart Catalog API

OPEN COLLECTION

Julep Storefront Read-Only JSON Cart Discovery API

OPEN COLLECTION

Julep Storefront Read-Only JSON Cart Search API

OPEN COLLECTION

MCP Servers 1

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

Julep UCP Commerce MCP Server

Julep's storefront exposes a live, hosted Model Context Protocol endpoint as the MCP transport for the Universal Commerce Protocol (UCP) shopping service. The endpoint is advert...

MCP SERVER

Agent Skills 2

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

julep-storefront-agent

AGENT SKILL

julep-browse-catalog

AGENT SKILL

Rate Limits 1

Documented rate limits and quota policies.

Julep Beauty Rate Limits

0 limits

RATE LIMITS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Julep Beauty API Rules

49 rules · 47 errors 1 warnings 1 info

SPECTRAL

OpenAPI Overlays 1

Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.

Julep Beauty Storefront Overlay

8 actions · update · julep-beauty-storefront-openapi.yml

DERIVED

Security Posture 2

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

Julep Beauty Authentication

3 schemes

SECURITY

Julep Beauty Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Julep Beauty Scopes

4 scopes · authorization_code/refresh_token/urn:ietf:params:oauth:grant-type:jwt-bearer

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

WellKnown

LLMsTxt

MCPServer

AgentSkill

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Conventions

ErrorCatalog

Lifecycle

Conformance

DataModel

Build 2

SDKs, sample code, and the tooling you integrate with

Packages

Packages

GitHubOrganization

GitHubOrganization

Access & Security 3

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

OAuthScopes

OAuthScopes

Operate 2

Status, limits, changes, and where to get help

RateLimits

RateLimits

Support

Support

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Blog

Blog

Website

Website

Other 3

Properties that don't map to a standard resource type

Overlay

Overlay

RefundPolicy

RefundPolicy

ShippingPolicy

ShippingPolicy

Source (apis.yml)

aid: julep-beauty
name: Julep Beauty
description: 'Julep is a direct-to-consumer beauty brand selling makeup, skincare, nail polish, and value sets, founded in
  Seattle by Jane Park and backed by Andreessen Horowitz, Maveron, and others before its 2016 acquisition. The brand positions
  itself around effortless, low-effort beauty for women who "do a lot but don''t want to spend a lot of time doing their makeup,"
  with skincare inspired by its founder''s Korean heritage. Julep runs its storefront on Shopify at www.julep.com and also
  sells through Amazon and Target. It is not an API platform and publishes no developer program, but the storefront carries
  a substantive agent-facing surface: published agent instructions at /agents.md and /llms.txt, a Universal Commerce Protocol
  merchant profile at /.well-known/ucp, a live MCP commerce endpoint, OpenID Connect discovery for customer accounts, and
  a public read-only catalog JSON API.'
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: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  - scopes
  - rate-limits
  - security
  generated: '2026-11-06'
  method: derived
image: https://www.julep.com/cdn/shop/files/Julep_Favicon.png?v=1631633077
url: https://raw.githubusercontent.com/api-evangelist/julep-beauty/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- a16z
x-tier: enriched
x-tier-reason: agentic-commerce-surface
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-19'
tags:
- Company
- Beauty
- Cosmetics
- Skincare
- Retail
- E-Commerce
- Direct to Consumer
- Shopify
- Agentic Commerce
- Universal Commerce Protocol
apis:
- aid: julep-beauty:ucp-commerce
  name: Julep UCP Commerce MCP Endpoint
  description: 'Julep''s agent-commerce surface. The storefront advertises a Universal Commerce Protocol merchant profile
    and a live JSON-RPC Model Context Protocol endpoint covering catalog search and lookup, cart, discount, checkout, fulfillment,
    and order, with Google Pay, Shopify card, and Shop Pay payment handlers. Provided natively by the Shopify platform and
    served on Julep''s own domain. Anonymous tools/list is refused: callers must present a resolvable UCP agent profile URI,
    and payment requires explicit contemporaneous buyer approval.'
  humanURL: https://www.julep.com/agents.md
  baseURL: https://www.julep.com/api/ucp/mcp
  tags:
  - Agentic Commerce
  - MCP
  - Universal Commerce Protocol
  - Checkout
  properties:
  - type: MCPServer
    url: mcp/julep-beauty-mcp.yml
  - type: Authentication
    url: authentication/julep-beauty-authentication.yml
  - type: OAuthScopes
    url: scopes/julep-beauty-scopes.yml
  - type: Documentation
    url: https://www.julep.com/agents.md
  x-surface: platform-generated
  x-platform: shopify
  x-platform-surface: ucp
- aid: julep-beauty:julep-beauty-cart-api
  name: Julep Beauty Cart API
  description: Read-only view of the current session cart.
  humanURL: https://www.julep.com/agents.md
  tags:
  - Cart
  properties:
  - type: OpenAPI
    url: openapi/julep-beauty-cart-api-openapi.yml
  - type: DataModel
    url: data-model/julep-beauty-data-model.yml
  - type: ErrorCatalog
    url: errors/julep-beauty-problem-types.yml
  - type: RateLimits
    url: rate-limits/julep-beauty-rate-limits.yml
  - type: Conventions
    url: conventions/julep-beauty-conventions.yml
  - type: Documentation
    url: https://www.julep.com/agents.md
- aid: julep-beauty:julep-beauty-discovery-api
  name: Julep Beauty Discovery API
  description: Store metadata and agent-discovery documents.
  humanURL: https://www.julep.com/agents.md
  tags:
  - Discovery
  properties:
  - type: OpenAPI
    url: openapi/julep-beauty-discovery-api-openapi.yml
  - type: DataModel
    url: data-model/julep-beauty-data-model.yml
  - type: ErrorCatalog
    url: errors/julep-beauty-problem-types.yml
  - type: RateLimits
    url: rate-limits/julep-beauty-rate-limits.yml
  - type: Conventions
    url: conventions/julep-beauty-conventions.yml
  - type: Documentation
    url: https://www.julep.com/agents.md
- aid: julep-beauty:julep-beauty-search-api
  name: Julep Beauty Search API
  description: Storefront product search.
  humanURL: https://www.julep.com/agents.md
  tags:
  - Search
  properties:
  - type: OpenAPI
    url: openapi/julep-beauty-search-api-openapi.yml
  - type: DataModel
    url: data-model/julep-beauty-data-model.yml
  - type: ErrorCatalog
    url: errors/julep-beauty-problem-types.yml
  - type: RateLimits
    url: rate-limits/julep-beauty-rate-limits.yml
  - type: Conventions
    url: conventions/julep-beauty-conventions.yml
  - type: Documentation
    url: https://www.julep.com/agents.md
- aid: julep-beauty:julep-com-shopify-storefront-json
  name: Julep Beauty Storefront JSON (Shopify)
  description: 'The Shopify Storefront JSON surface that Shopify generates for every Shopify site or store, served on julep.com.
    Catalogued as one platform-generated record, not as separate APIs: nobody at Julep Beauty designed it.'
  baseURL: https://julep.com
  tags:
  - Shopify
  x-surface: platform-generated
  x-platform: shopify
  x-platform-surface: storefront-json
  properties:
  - type: Documentation
    url: https://julep.com
common:
- type: Overlay
  url: overlays/julep-beauty-storefront-overlay.yaml
- type: DomainSecurity
  url: security/julep-beauty-domain-security.yml
- type: WellKnown
  url: well-known/julep-beauty-well-known.yml
- type: LLMsTxt
  url: llms/julep-beauty-llms.txt
- type: MCPServer
  url: mcp/julep-beauty-mcp.yml
- type: AgentSkill
  url: skills/_index.yml
- type: Authentication
  url: authentication/julep-beauty-authentication.yml
- type: OAuthScopes
  url: scopes/julep-beauty-scopes.yml
- type: Conventions
  url: conventions/julep-beauty-conventions.yml
- type: RateLimits
  url: rate-limits/julep-beauty-rate-limits.yml
- type: ErrorCatalog
  url: errors/julep-beauty-problem-types.yml
- type: Lifecycle
  url: lifecycle/julep-beauty-lifecycle.yml
- type: Conformance
  url: conformance/julep-beauty-conformance.yml
- type: DataModel
  url: data-model/julep-beauty-data-model.yml
- type: Packages
  url: packages/julep-beauty-packages.yml
- type: Documentation
  url: https://www.julep.com/agents.md
- type: Support
  url: https://www.julep.com/pages/contact
- type: Blog
  url: https://www.julep.com/blogs/news
- type: SignUp
  url: https://www.julep.com/account/login
- type: TermsOfService
  url: https://www.julep.com/policies/terms-of-service
- type: PrivacyPolicy
  url: https://www.julep.com/policies/privacy-policy
- type: RefundPolicy
  url: https://www.julep.com/policies/refund-policy
- type: ShippingPolicy
  url: https://www.julep.com/policies/shipping-policy
- type: GitHubOrganization
  url: https://github.com/julep
- type: Website
  url: https://www.julep.com
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

Julep Beauty API — frequently asked questions

Does Julep Beauty have an API?

Yes. APIs.io lists 5 APIs from Julep Beauty, including Julep UCP Commerce MCP Endpoint, Julep Beauty Cart API and Julep Beauty Discovery API, and 2 more.

Is there an OpenAPI specification for the Julep Beauty API?

Yes. APIs.io indexes 3 OpenAPI specifications for Julep Beauty, each linked for download from this page.

How do I authenticate with the Julep Beauty API?

Julep Beauty uses bearer-token authentication (3 schemes). The details are profiled on APIs.io as Julep Beauty Authentication.

Does Julep Beauty have an MCP server?

Yes. APIs.io lists 1 MCP server for Julep Beauty: Julep's storefront exposes a live, hosted Model Context Protocol endpoint as the MCP transport for the Universal Commerce Protocol (UCP) shopping service. The endpoint is advertised in the merchant's

Is the Julep Beauty API ready for AI agents?

Julep Beauty has a Kin Score of 30.2 out of 100 (thin) and an Agent Readiness score of 31.3 (agent-ready), scored by API Evangelist on 2026-11-06.

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