Curie

Curie (Curie Vision, Inc.) is the commerce layer for AI — it connects AI assistants like ChatGPT, Claude, and Gemini to real product catalogs from 5.6M+ Shopify stores via the Model Context Protocol (MCP). Results carry live prices, real inventory, affiliate purchase links, and interactive 3D digital twins (GLB/USDZ) that shoppers can rotate and view in AR. Curie publishes a public REST catalog API, a hosted MCP server exposing 30 commerce tools, and cross-protocol discovery profiles (MCP, UCP, A2A, OpenAI Apps SDK). Most discovery and tool calls run on a free public tier with no auth; a Pro Bearer is required only for premium tools such as checkout. Backed by 500 Global.

Curie publishes 2 APIs on the APIs.io network: Catalog API and Products API. Tagged areas include Company, Commerce, E-Commerce, Shopify, and Artificial Intelligence.

Curie’s developer surface includes documentation, pricing, authentication, and 17 more developer resources.

🌐 Visit website 📡 Source on GitHub

38.5/100 thin ▬ flat Agent 48/100 agent native saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessSelf serve

1 APIs 1 MCP Servers

Company Commerce E-Commerce Shopify Artificial Intelligence MCP Agentic Commerce Product Discovery 3D

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 38.5/100 · thin

Contract Quality 14.5 / 25

Developer Ergonomics 8.0 / 20

Access Clarity 6.3 / 20

Operational Transparency 0.0 / 13

Contract Governance 2.2 / 12

Discoverability 7.6 / 10

Agent readiness — 48/100 · agent native

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 7 / 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 4 / 4

Delegated User Identity 6 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 5 / 5

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.

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/curie: 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 2

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

Curie Catalog API

The Catalog API from Curie — 1 operation(s) for catalog.

Curie Products API

The Products API from Curie — 6 operation(s) for products.

Open Collections 3

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

API Collection

OPEN COLLECTION

Curie 3D Product Commerce Catalog API

OPEN COLLECTION

Curie 3D Product Commerce Catalog Products API

OPEN COLLECTION

MCP Servers 1

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

Curie Commerce

AI commerce layer for Shopify — search, compare, view 3D models, and buy products from 5.6M+ stores. Free public tier (matches Shopify Storefront MCP behaviour); Pro Bearer requ...

MCP SERVER

Security Posture 2

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

Curie Authentication

none/http-bearer/oauth2 · 1 scheme

SECURITY

Curie Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Curie Scopes

1 scope · authorizationCode

1 scopes

SCOPES

Resources

Get Started 1

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

MCPServer

LLMsTxt

WellKnown

AgentSkill

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

ErrorCatalog

Conventions

DataModel

Conformance

Lifecycle

Components

Access & Security 3

Authentication, authorization, and security posture

Authentication

Authentication

OAuthScopes

OAuthScopes

DomainSecurity

DomainSecurity

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 1

The organization behind the API

Website

Website

Other 1

Properties that don't map to a standard resource type

Overlay

Overlay

Source (apis.yml)

aid: curie
name: Curie
description: Curie (Curie Vision, Inc.) is the commerce layer for AI — it connects AI assistants like ChatGPT, Claude, and
  Gemini to real product catalogs from 5.6M+ Shopify stores via the Model Context Protocol (MCP). Results carry live prices,
  real inventory, affiliate purchase links, and interactive 3D digital twins (GLB/USDZ) that shoppers can rotate and view
  in AR. Curie publishes a public REST catalog API, a hosted MCP server exposing 30 commerce tools, and cross-protocol discovery
  profiles (MCP, UCP, A2A, OpenAI Apps SDK). Most discovery and tool calls run on a free public tier with no auth; a Pro Bearer
  is required only for premium tools such as checkout. Backed by 500 Global.
url: https://raw.githubusercontent.com/api-evangelist/curie/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
  generated: '2026-07-22'
  method: derived
image: https://cdn.prod.website-files.com/631a7e6c04b8fc3228d60317/631a7e6c04b8fc759ad60333_App%20Icon%20Main%20-%2032x32.png
x-type: company
x-source: vc-portfolio
x-backed-by:
- 500-global
x-tier: enriched
x-tier-reason: live-api-and-mcp
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-18'
tags:
- Company
- Commerce
- E-Commerce
- Shopify
- Artificial Intelligence
- MCP
- Agentic Commerce
- Product Discovery
- 3D
tags_raw:
- Company
- Commerce
- E-Commerce
- Shopify
- Artificial Intelligence
- Model Context Protocol
- Agentic Commerce
- Product Discovery
- 3D
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
apis:
- aid: curie:curie-catalog-api
  name: Curie Catalog API
  description: The Catalog API from Curie — 1 operation(s) for catalog.
  humanURL: https://chat.curie.app
  baseURL: https://chat.curie.app
  tags:
  - Catalog
  properties:
  - type: OpenAPI
    url: openapi/curie-catalog-api-openapi.yml
  - type: APIReference
    url: openapi/_original/curie-openapi.json
- aid: curie:curie-products-api
  name: Curie Products API
  description: The Products API from Curie — 6 operation(s) for products.
  humanURL: https://chat.curie.app
  baseURL: https://chat.curie.app
  tags:
  - Product
  tags_raw:
  - Products
  properties:
  - type: OpenAPI
    url: openapi/curie-products-api-openapi.yml
  - type: APIReference
    url: openapi/_original/curie-openapi.json
common:
- type: Website
  url: https://curie.co
- type: DeveloperPortal
  url: https://chat.curie.app
- type: Documentation
  url: https://chat.curie.app/llms.txt
- type: Pricing
  url: https://chat.curie.app/pricing
- type: TermsOfService
  url: https://chat.curie.app/terms
- type: PrivacyPolicy
  url: https://chat.curie.app/privacy
- type: MCPServer
  url: mcp/curie-mcp.yml
- type: LLMsTxt
  url: llms/curie-llms.txt
- type: WellKnown
  url: well-known/curie-well-known.yml
- type: Authentication
  url: authentication/curie-authentication.yml
- type: OAuthScopes
  url: scopes/curie-scopes.yml
- type: DomainSecurity
  url: security/curie-domain-security.yml
- type: ErrorCatalog
  url: errors/curie-problem-types.yml
- type: Conventions
  url: conventions/curie-conventions.yml
- type: DataModel
  url: data-model/curie-data-model.yml
- type: Conformance
  url: conformance/curie-conformance.yml
- type: Lifecycle
  url: lifecycle/curie-lifecycle.yml
- type: Overlay
  url: overlays/curie-overlay.yaml
- type: Components
  url: components/curie-components.yml
- type: AgentSkill
  url: skills/_index.yml
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

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