Casper website screenshot

Casper

Casper (Casper Sleep Inc.) is a direct-to-consumer sleep and home goods brand that sells mattresses, bedding, pillows, and sleep accessories online at casper.com and through retail partners. Its casper.com storefront runs on Shopify and exposes a modern agentic-commerce surface: a published llms.txt/agents.md with agent instructions, the Universal Commerce Protocol (UCP) merchant profile, a UCP shopping MCP endpoint for AI agents to search, cart, and check out, and Shopify Customer Account API OpenID Connect authentication. Casper was added to the API Evangelist network as a portfolio company of IVP and Slow Ventures and enriched from its live public agent/commerce surface.

Casper is profiled on the APIs.io network. Tagged areas include Company, E-Commerce, Retail, Sleep, and Mattresses.

Casper’s developer surface includes authentication and 9 more developer resources.

🌐 Visit website 📡 Source on GitHub
12.3/100 emerging ▬ flat Agent 20/100 agent aware saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0
AccessSelf serve
0 APIs 1 MCP Servers
CompanyE-CommerceRetailSleepMattressesDirect to ConsumerAgentic CommerceShopify

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0
Composite quality — 12.3/100 · emerging
Contract Quality 0.0 / 25
Developer Ergonomics 2.4 / 20
Access Clarity 4.2 / 20
Operational Transparency 0.0 / 13
Contract Governance 0.0 / 12
Discoverability 5.7 / 10
Agent readiness — 20/100 · 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 0 / 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
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.
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/casper: 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 →

MCP Servers 1

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

Casper UCP shopping MCP

MCP SERVER

Security Posture 2

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

Casper Authentication

openIdConnect/oauth2 · 1 scheme

SECURITY

Casper Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Casper Scopes

4 scopes · authorizationCode

4 scopes

SCOPES

Resources

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

MCPServer
MCPServer
 WellKnown
WellKnown
 LLMsTxt
LLMsTxt

Design & Contract 1

Pagination, idempotency, versioning, errors, and events

Conventions
Conventions

Access & Security 3

Authentication, authorization, and security posture

Authentication
Authentication
 OAuthScopes
OAuthScopes
 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: casper
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: 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://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/casper.png
name: Casper
description: 'Casper (Casper Sleep Inc.) is a direct-to-consumer sleep and home goods brand that sells mattresses, bedding,
  pillows, and sleep accessories online at casper.com and through retail partners. Its casper.com storefront runs on Shopify
  and exposes a modern agentic-commerce surface: a published llms.txt/agents.md with agent instructions, the Universal Commerce
  Protocol (UCP) merchant profile, a UCP shopping MCP endpoint for AI agents to search, cart, and check out, and Shopify Customer
  Account API OpenID Connect authentication. Casper was added to the API Evangelist network as a portfolio company of IVP
  and Slow Ventures and enriched from its live public agent/commerce surface.'
url: https://raw.githubusercontent.com/api-evangelist/casper/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- ivp
- slow-ventures
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-18'
tags:
- Company
- E-Commerce
- Retail
- Sleep
- Mattresses
- Direct to Consumer
- Agentic Commerce
- Shopify
tags_raw:
- Company
- Ecommerce
- Retail
- Sleep
- Mattresses
- Direct to Consumer
- Agentic Commerce
- Shopify
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://casper.com
- type: MCPServer
  name: Casper UCP shopping MCP
  url: mcp/casper-mcp.yml
- type: WellKnown
  name: Casper .well-known discovery index
  url: well-known/casper-well-known.yml
- type: LLMsTxt
  name: Casper llms.txt agent instructions
  url: llms/casper-llms.txt
- type: Authentication
  name: Casper authentication profile
  url: authentication/casper-authentication.yml
- type: OAuthScopes
  name: Casper OAuth scopes
  url: scopes/casper-scopes.yml
- type: Conventions
  name: Casper API/commerce conventions
  url: conventions/casper-conventions.yml
- type: DomainSecurity
  name: Casper domain security posture
  url: security/casper-domain-security.yml
- type: PrivacyPolicy
  url: https://casper.com/policies/privacy-policy
- type: TermsOfService
  url: https://casper.com/policies/terms-of-service
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

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