Starwood Hotels and Resorts

Starwood Hotels & Resorts Worldwide was a global hotel and leisure company headquartered in Stamford, Connecticut. Prior to its acquisition by Marriott International in September 2016, Starwood operated and franchised hotels, resorts, and residences under iconic brands including Sheraton, Westin, W Hotels, St. Regis, Le Méridien, Four Points, Tribute Portfolio, Design Hotels, Element, and Aloft. The company also operated the Starwood Preferred Guest (SPG) loyalty program, which was later merged into Marriott Bonvoy. At the time of acquisition, Starwood managed over 1,300 properties in approximately 100 countries. Starwood exposed APIs for hotel search, property data, and loyalty program integration that were consumed by travel platforms and partners.

Starwood Hotels and Resorts publishes 5 API contracts indexed on the APIs.io network, including Availability API, Hotels API, Properties API, and 2 more. Tagged areas include Hotels, Travel, Hospitality, Loyalty, and Rewards.

The Starwood Hotels and Resorts catalog on APIs.io includes 1 JSON-LD context and 2 Spectral governance rulesets.

Starwood Hotels and Resorts’ developer surface includes engineering blog and 18 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

26.0/100 emerging ▬ flat Agent 25/100 agent aware Front door AI 1/6 silent saas Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

AccessEnterprise

1 published contract

Hotels Travel Hospitality Loyalty Rewards Content

Kin Score

Kin Score How this is scored →
scored 2026-11-13 · rubric v0.28.0

Composite quality — 26.0/100 · emerging

Contract Quality 10.9 / 21

Developer Ergonomics 3.2 / 17

Access Clarity 0.7 / 17

Operational Transparency 0.5 / 11

Contract Governance 2.8 / 10

Discoverability 5.2 / 9

Regulatory Posture 0.7 / 15

Agent readiness — 25/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 6 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 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 0 / 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 0 / 5

Pagination 5 / 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):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship Ask about this →
Machine-Readable Auth +10 pts — a served openid-configuration/oauth-authorization-server carrying `issuer` (served), else the securitySchemes class in the provider OpenAPIs — bound (mutualTLS, DPoP, Signature) > negotiable (oauth2 authorizationCode/clientCredentials, openIdConnect) > bearer (http bearer, apiKey) Ask about this →
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0 Ask about this →
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link Ask about this →
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document Ask about this →
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) Ask about this →

6 more unmet checks in the Agent Readiness table above.

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

Access Clarity scores 4.3 — up to +19.1 composite points Ask about this →
Developer Ergonomics scores 19.0 — up to +16.2 composite points Ask about this →
Operational Transparency scores 4.8 — up to +12.4 composite points Ask about this →

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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/starwood-hotels-and-resorts/apis.yml: open an issue on github.com/api-evangelist/starwood-hotels-and-resorts 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 1

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.

OpenAPI

measured — observed by APIs.io (published)

APIs 5

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

SPG Loyalty API

The Starwood Preferred Guest (SPG) Loyalty API provided programmatic access to the SPG loyalty program, enabling partners to query member point balances, redeem Starpoints, look...

Property Data API

The Starwood Property Data API provided detailed information about individual hotel properties including room types, amenities, dining options, meeting and event spaces, photos,...

Starwood Hotels and Resorts Availability API

Rate and availability operations

Starwood Hotels and Resorts Hotels API

Hotel search and property operations

Starwood Hotels and Resorts Properties API

Property detail operations

Open Collections 4

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

Starwood Hotel Search API

OPEN COLLECTION

Starwood Hotel Search Availability API

OPEN COLLECTION

Starwood Hotel Search Availability Hotels API

OPEN COLLECTION

Starwood Hotel Search Availability Properties API

OPEN COLLECTION

Starwood Hotels and Resorts API pricing

Not yet checked against Starwood Hotels and Resorts's own pricing page. Compiled by API Evangelist on 2026-05-05 from www.starwoodhotels.com/; confirm before you rely on a figure.

Plan	Price
Contact Sales enterprise	—

Plan details, limits and sources →

Rate limits

Partner-Negotiated Limits: set per partner agreement; not publicly documented varies

Compiled by API Evangelist, not yet checked against Starwood Hotels and Resorts's documentation. Rate-limit details →

Pricing Plans 1

Published pricing tiers and plan structures.

Starwood Hotels and Resorts Plans Pricing

1 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Starwood Hotels and Resorts Rate Limits

1 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Starwood Hotels and Resorts Finops

FINOPS

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Starwood Hotels And Resorts Context

23 classes · 8 properties

JSON-LD

Spectral Rules 2

Spectral governance rulesets for linting and validating these APIs. Counts are the severity each rule declares, not results of running them.

Starwood Hotels and Resorts — jsonschema rules

5 rules · 3 warn-severity 2 info-severity

SPECTRAL

Starwood Hotels and Resorts API Rules

13 rules · 4 error-severity 9 warn-severity

SPECTRAL

JSON Schema 1

Standalone JSON Schema definitions for this provider's data models.

Hotel

21 properties

JSON SCHEMA

JSON Structure 1

JSON Structure definitions describing this provider's data shapes.

Starwood Hotel Structure

0 properties

JSON STRUCTURE

Examples 1

Example request and response payloads for these APIs.

Starwood Search Hotels Example

2 fields

EXAMPLE

Security Posture 1

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

Starwood Hotels and Resorts Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access (API Evangelist recommendations) 1

Recommended x-agentic-access execution contracts for AI agents.

Starwood Hotels and Resorts Agentic Access

3 operations

3 operations · 0 acting

AGENTIC

Press 5

Recent news and press coverage referencing this provider.

Document 4 - file: exhibit991-pressreleasexan.htm

SH HOTELS & RESORTS BECOMES STARWOOD ...

Starwood Hotels Return and Expansion

Starwood Hotels new logo and its future under Barry ...

CT-STARWOOD-HOTELS | Business Wire - Via Ritzau

Resources

Get Started 1

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

Documentation 2

Reference material describing how the API behaves

OpenAPI

OpenAPI

JSONSchema

JSONSchema

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Design & Contract 4

Pagination, idempotency, versioning, errors, and events

JSONStructure

JSONLD

Vocabulary

SpectralRules

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 4

Pricing, plans, and the legal terms of use

Plans

FinOps

TermsOfService

PrivacyPolicy

Company 4

The organization behind the API

Website

Website

LinkedIn

Facebook

Facebook

Blog

Blog

Other 1

Properties that don't map to a standard resource type

Acquisition

Acquisition

Source (apis.yml)

aid: starwood-hotels-and-resorts
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
specificationVersion: '0.23'
accessModel:
  pricing: enterprise
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Enterprise
  confidence: low
  source:
  - plans
  - security
  generated: '2026-11-13'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/starwood-hotels-and-resorts.png
url: https://raw.githubusercontent.com/api-evangelist/starwood-hotels-and-resorts/refs/heads/main/apis.yml
modified: '2026-09-16'
name: Starwood Hotels and Resorts
description: Starwood Hotels & Resorts Worldwide was a global hotel and leisure company headquartered in Stamford, Connecticut.
  Prior to its acquisition by Marriott International in September 2016, Starwood operated and franchised hotels, resorts,
  and residences under iconic brands including Sheraton, Westin, W Hotels, St. Regis, Le Méridien, Four Points, Tribute Portfolio,
  Design Hotels, Element, and Aloft. The company also operated the Starwood Preferred Guest (SPG) loyalty program, which was
  later merged into Marriott Bonvoy. At the time of acquisition, Starwood managed over 1,300 properties in approximately 100
  countries. Starwood exposed APIs for hotel search, property data, and loyalty program integration that were consumed by
  travel platforms and partners.
apis:
- aid: starwood-hotels-and-resorts:spg-loyalty-api
  name: SPG Loyalty API
  description: The Starwood Preferred Guest (SPG) Loyalty API provided programmatic access to the SPG loyalty program, enabling
    partners to query member point balances, redeem Starpoints, look up member status and tier information, and book award
    nights. The program offered Preferred, Gold, and Platinum status tiers with corresponding benefits. Following the Marriott
    acquisition, SPG was eventually merged into the Marriott Bonvoy loyalty program in 2019.
  humanURL: https://www.starwoodhotels.com/preferredguest/
  baseURL: https://www.starwoodhotels.com/api/spg
  tags:
  - Loyalty
  - Rewards
  - Hotels
  - Travel
  - Hospitality
  properties:
  - type: Documentation
    url: https://www.starwoodhotels.com/preferredguest/
- aid: starwood-hotels-and-resorts:property-data-api
  name: Property Data API
  description: The Starwood Property Data API provided detailed information about individual hotel properties including room
    types, amenities, dining options, meeting and event spaces, photos, geo-coordinates, and contact information. Partners
    used this API to populate travel booking sites and corporate travel management systems with accurate Starwood property
    content.
  humanURL: https://www.starwoodhotels.com/
  baseURL: https://www.starwoodhotels.com/api/properties
  tags:
  - Hotels
  - Properties
  - Travel
  - Content
  - Hospitality
  properties:
  - type: Documentation
    url: https://www.starwoodhotels.com/
- aid: starwood-hotels-and-resorts:starwood-hotels-and-resorts-availability-api
  name: Starwood Hotels and Resorts Availability API
  description: Rate and availability operations
  humanURL: https://www.starwoodhotels.com/
  baseURL: https://www.starwoodhotels.com/api
  tags:
  - Availability
  properties:
  - type: OpenAPI
    url: openapi/starwood-hotels-and-resorts-availability-api-openapi.yml
  - type: Documentation
    url: https://github.com/StayExpert/starwood
- aid: starwood-hotels-and-resorts:starwood-hotels-and-resorts-hotels-api
  name: Starwood Hotels and Resorts Hotels API
  description: Hotel search and property operations
  humanURL: https://www.starwoodhotels.com/
  baseURL: https://www.starwoodhotels.com/api
  tags:
  - Hotels
  properties:
  - type: OpenAPI
    url: openapi/starwood-hotels-and-resorts-hotels-api-openapi.yml
  - type: Documentation
    url: https://github.com/StayExpert/starwood
- aid: starwood-hotels-and-resorts:starwood-hotels-and-resorts-properties-api
  name: Starwood Hotels and Resorts Properties API
  description: Property detail operations
  humanURL: https://www.starwoodhotels.com/
  baseURL: https://www.starwoodhotels.com/api
  tags:
  - Properties
  properties:
  - type: OpenAPI
    url: openapi/starwood-hotels-and-resorts-properties-api-openapi.yml
  - type: Documentation
    url: https://github.com/StayExpert/starwood
common:
- type: Plans
  url: plans/starwood-hotels-and-resorts-plans-pricing.yml
- type: RateLimits
  url: rate-limits/starwood-hotels-and-resorts-rate-limits.yml
- type: FinOps
  url: finops/starwood-hotels-and-resorts-finops.yml
- type: AgenticAccess
  url: agentic-access/starwood-hotels-and-resorts-agentic-access.yml
- type: DomainSecurity
  url: security/starwood-hotels-and-resorts-domain-security.yml
- type: Website
  url: https://www.starwoodhotels.com
- type: DeveloperPortal
  url: https://github.com/StayExpert/starwood
- type: LinkedIn
  url: https://www.linkedin.com/company/starwoodhotels
- type: Facebook
  url: https://www.facebook.com/starwood
- type: Blog
  url: https://www.starwoodhotels.com/corporate/
- type: Acquisition
  url: https://marriott.gcs-web.com/news-releases/news-release-details/marriott-international-completes-acquisition-starwood-hotels
- type: TermsOfService
  url: https://www.starwoodhotels.com/corporate/terms.html
- type: PrivacyPolicy
  url: https://www.starwoodhotels.com/corporate/privacy.html
- type: OpenAPI
  url: openapi/_original/starwood-hotel-search-openapi.yml
- type: JSONSchema
  url: json-schema/starwood-hotel-search-schema.json
- type: JSONStructure
  url: json-structure/starwood-hotel-structure.json
- type: JSONLD
  url: json-ld/starwood-hotels-and-resorts-context.jsonld
- type: Vocabulary
  url: vocabulary/starwood-hotels-and-resorts-vocabulary.yml
- type: SpectralRules
  url: rules/starwood-hotels-and-resorts-rules.yml
tags:
- Hotels
- Travel
- Hospitality
- Loyalty
- Rewards
- Content

Starwood Hotels and Resorts API — frequently asked questions

Does Starwood Hotels and Resorts have an API?

Yes. APIs.io lists 5 APIs from Starwood Hotels and Resorts, including SPG Loyalty API, Property Data API and Starwood Hotels and Resorts Availability API, and 2 more.

Is there an OpenAPI specification for the Starwood Hotels and Resorts API?

Yes. APIs.io indexes 3 OpenAPI specifications for Starwood Hotels and Resorts, each linked for download from this page.

How much does the Starwood Hotels and Resorts API cost?

APIs.io lists 1 pricing plan for Starwood Hotels and Resorts, with each plan's price, limits and inclusions under Pricing on this page.

Is the Starwood Hotels and Resorts API ready for AI agents?

Starwood Hotels and Resorts has a Kin Score of 26.0 out of 100 (emerging) and an Agent Readiness score of 24.5 (agent-aware), scored by API Evangelist on 2026-11-13.

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