Cometeer

Cometeer is a Gloucester, Massachusetts coffee company, founded in 2015 by Matthew Roberts and Douglas Hoon, that brews specialty coffee at high extraction and then flash-freezes it with liquid nitrogen into single-serve capsules shipped direct to consumers by subscription. Coffees are roasted by third-wave partners including Counter Culture, Intelligentsia, Onyx, Square Mile, Equator and George Howell. Cometeer publishes no developer API, but its Shopify-hosted storefront exposes a substantial machine-readable agent surface: an /llms.txt agent instruction set, OpenID Connect and RFC 8414 authorization-server metadata on its own apex host, and a live Universal Commerce Protocol (UCP) merchant profile advertising an MCP endpoint for agent-driven cart, checkout and order flows.

Cometeer publishes 1 API on the APIs.io network: Storefront (read-only). Tagged areas include Company, Coffee, Food and Beverage, E-Commerce, and Direct to Consumer.

Cometeer’s developer surface includes documentation, support, engineering blog, pricing, signup flow, authentication, and 13 more developer resources.

🌐 Visit website 📡 Source on GitHub
28.4/100 thin ▬ flat Agent 34/100 agent aware Full breakdown ↓
scored 2026-08-05 · rubric v0.9.1
2 APIs 1 MCP Servers
CompanyCoffeeFood and BeverageE-CommerceDirect to ConsumerRetailSubscriptionAgentic CommerceShopifyModel Context Protocol

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-05 · rubric v0.9.1
Composite quality — 28.4/100 · thin
Contract Quality 3.7 / 25
Developer Ergonomics 5.5 / 20
Commercial Clarity 8.9 / 20
Operational Transparency 0.0 / 13
Governance 1.5 / 12
Discoverability 8.7 / 10
Agent readiness — 34/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 0 / 10
MCP Server 0 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 8 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 0 / 7
Typed Event Surface 0 / 6
Agent Skills 5 / 5
Well-Known Catalog 4 / 4
Consent & Bot Identity 0 / 3
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 0 / 4
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/cometeer: 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 2

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

Cometeer Storefront (read-only)

The public, unauthenticated JSON browsing surface of the Cometeer online store — products, collections, search and sitemap. Cometeer documents these endpoints for agents itself,...

Cometeer UCP Commerce (MCP)

Cometeer's Universal Commerce Protocol shopping service, exposed over MCP (JSON-RPC 2.0 via HTTP POST) at /api/ucp/mcp and advertised from /.well-known/ucp. Thirteen tools cover...

MCP Servers 1

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

cometeer-mcp.yml

MCP SERVER

Security Posture 2

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

Cometeer Authentication

none/openIdConnect/oauth2 · 3 schemes

SECURITY

Cometeer Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Cometeer Scopes

4 scopes · authorizationCode

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 3

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt
LLMsTxt
 WellKnown
WellKnown
 AgentSkill
AgentSkill

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Conformance
Conformance
 Lifecycle
Lifecycle
 Conventions
Conventions
 ErrorCatalog
ErrorCatalog
 DataModel
DataModel

Access & Security 3

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity
 Authentication
Authentication
 OAuthScopes
OAuthScopes

Operate 1

Status, limits, changes, and where to get help

Support
Support

Commercial 3

Pricing, plans, and the legal terms of use

Pricing
Pricing
 TermsOfService
TermsOfService
 PrivacyPolicy
PrivacyPolicy

Company 2

The organization behind the API

Website
Website
 Blog
Blog

Source (apis.yml)

apis.yml Raw ↑ 
aid: cometeer
name: Cometeer
x-enrichment:
  date: '2026-08-01'
  status: enriched
  artifacts_added: 19
  pass: local-v1
description: 'Cometeer is a Gloucester, Massachusetts coffee company, founded in 2015 by Matthew Roberts and Douglas Hoon,
  that brews specialty coffee at high extraction and then flash-freezes it with liquid nitrogen into single-serve capsules
  shipped direct to consumers by subscription. Coffees are roasted by third-wave partners including Counter Culture, Intelligentsia,
  Onyx, Square Mile, Equator and George Howell. Cometeer publishes no developer API, but its Shopify-hosted storefront exposes
  a substantial machine-readable agent surface: an /llms.txt agent instruction set, OpenID Connect and RFC 8414 authorization-server
  metadata on its own apex host, and a live Universal Commerce Protocol (UCP) merchant profile advertising an MCP endpoint
  for agent-driven cart, checkout and order flows.'
image: https://cometeer.com/cdn/shop/files/Cometeer01528.png?crop=center&height=480&v=1759521644&width=480
url: https://raw.githubusercontent.com/api-evangelist/cometeer/refs/heads/main/apis.yml
x-type: company
x-source: harvest:secondary-market
x-tier: profiled
x-tier-reason: enrichment-pass
specificationVersion: '0.20'
created: '2026-08-01'
modified: '2026-08-01'
tags:
- Company
- Coffee
- Food and Beverage
- E-Commerce
- Direct to Consumer
- Retail
- Subscription
- Agentic Commerce
- Shopify
- Model Context Protocol
apis:
- aid: cometeer:storefront
  name: Cometeer Storefront (read-only)
  description: The public, unauthenticated JSON browsing surface of the Cometeer online store — products, collections, search
    and sitemap. Cometeer documents these endpoints for agents itself, under "Read-Only Browsing (No Authentication Required)"
    in its /llms.txt. No credential is required and no rate-limit headers are published.
  humanURL: https://cometeer.com/llms.txt
  baseURL: https://cometeer.com
  tags:
  - Products
  - Catalog
  - E-Commerce
  properties:
  - type: OpenAPI
    url: openapi/cometeer-storefront-openapi.yml
  - type: LLMsTxt
    url: llms/cometeer-llms.txt
- aid: cometeer:ucp-commerce
  name: Cometeer UCP Commerce (MCP)
  description: Cometeer's Universal Commerce Protocol shopping service, exposed over MCP (JSON-RPC 2.0 via HTTP POST) at /api/ucp/mcp
    and advertised from /.well-known/ucp. Thirteen tools cover catalog search and lookup, cart, checkout, fulfillment, discount
    and order. Calls require a resolvable UCP agent profile URI, and completing payment requires contemporaneous human buyer
    approval.
  humanURL: https://cometeer.com/llms.txt
  baseURL: https://cometeer.com/api/ucp/mcp
  tags:
  - Agentic Commerce
  - Model Context Protocol
  - Checkout
  properties:
  - type: MCPServer
    url: mcp/cometeer-mcp.yml
  - type: ToolCrosswalk
    url: mcp/cometeer-tool-crosswalk.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/cometeer-domain-security.yml
- type: Website
  url: https://cometeer.com/
- type: Documentation
  url: https://cometeer.com/agents.md
- type: LLMsTxt
  url: llms/cometeer-llms.txt
- type: Support
  url: https://help.cometeer.com/
- type: Blog
  url: https://cometeer.com/blogs/tasting-notes
- type: Pricing
  url: https://cometeer.com/pages/shop-all-coffee
- type: SignUp
  url: https://account.cometeer.com/account
- type: TermsOfService
  url: https://cometeer.com/policies/terms-of-service
- type: PrivacyPolicy
  url: https://cometeer.com/policies/privacy-policy
- type: WellKnown
  url: well-known/cometeer-well-known.yml
- type: Authentication
  url: authentication/cometeer-authentication.yml
- type: OAuthScopes
  url: scopes/cometeer-scopes.yml
- type: Conformance
  url: conformance/cometeer-conformance.yml
- type: Lifecycle
  url: lifecycle/cometeer-lifecycle.yml
- type: Conventions
  url: conventions/cometeer-conventions.yml
- type: ErrorCatalog
  url: errors/cometeer-problem-types.yml
- type: DataModel
  url: data-model/cometeer-data-model.yml
- type: AgentSkill
  url: skills/_index.yml