Marriott International

Marriott International is a global lodging company with a portfolio of more than 30 brands and thousands of properties across luxury, premium, select, and longer-stay hotel categories.

Marriott International publishes 3 APIs on the APIs.io network: Availability API, Properties API, and Reservations API. Tagged areas include Fortune 500.

Marriott International’s developer surface includes authentication and 5 more developer resources.

📡 Source on GitHub

23.8/100 emerging ▬ flat Agent 23/100 agent aware Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessSelf serve

1 APIs

Fortune 500

Kin Score

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

Composite quality — 23.8/100 · emerging

Contract Quality 11.2 / 23

Developer Ergonomics 3.9 / 18

Access Clarity 2.4 / 18

Operational Transparency 0.6 / 12

Contract Governance 0.0 / 11

Discoverability 4.0 / 9

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 23/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 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 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

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/marriott-international: 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 3

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

Marriott International Availability API

Check room availability and rates.

Marriott International Properties API

Search and retrieve hotel property information.

Marriott International Reservations API

Create and manage hotel reservations.

Open Collections 5

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

API Collection

OPEN COLLECTION

Marriott Developer Availability API

OPEN COLLECTION

Marriott Developer API

OPEN COLLECTION

Marriott Developer Availability Properties API

OPEN COLLECTION

Marriott Developer Availability Reservations API

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Marriott International Plans Pricing

1 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Marriott International Rate Limits

2 limits

RATE LIMITS

FinOps 1

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

Marriott International Finops

FINOPS

Security Posture 3

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

Marriott International Authentication

apiKey/oauth2 · 2 schemes

SECURITY

Marriott International Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Marriott International Vulnerability Disclosure

Hackerone · security.txt · contact published

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Marriott International Scopes

2 scopes · clientCredentials

2 scopes

SCOPES

Agentic Access 1

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

Marriott International Agentic Access

5 operations · 1 acting

AGENTIC

Press 5

Recent news and press coverage referencing this provider.

Marriott CIO talks enterprisewide AI deployment strategy

2026-05-25

Marriott gears up for another year of major tech spending

2026-05-25

📌 A lesson from Marriott International's bold #AI strategy.

2026-05-25

Press Release - Marriott International Media Centre

2026-05-25

How Marriott's AI Initiatives Will Empower Event Planners

2026-05-25

Resources

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Access & Security 4

Authentication, authorization, and security posture

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Authentication

Authentication

OAuthScopes

OAuthScopes

Company 1

The organization behind the API

LinkedIn

Source (apis.yml)

aid: marriott-international
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: true
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - openapi
  generated: '2026-08-28'
  method: derived
specificationVersion: '0.23'
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/marriott-international.png
tags:
- Fortune 500
name: Marriott International
modified: '2026-05-19'
url: https://raw.githubusercontent.com/api-evangelist/marriott-international/refs/heads/main/apis.yml
common:
- type: AgenticAccess
  url: agentic-access/marriott-international-agentic-access.yml
- type: VulnerabilityDisclosure
  url: security/marriott-international-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/marriott-international-domain-security.yml
- type: Authentication
  url: authentication/marriott-international-authentication.yml
- type: OAuthScopes
  url: scopes/marriott-international-scopes.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/marriott-international
apis:
- aid: marriott-international:marriott-international-availability-api
  name: Marriott International Availability API
  description: Check room availability and rates.
  humanURL: https://devportalprod.marriott.com/
  baseURL: https://devportalprod.marriott.com
  tags:
  - Availability
  properties:
  - type: OpenAPI
    url: openapi/marriott-international-availability-api-openapi.yml
  - type: Documentation
    url: https://devportalprod.marriott.com/apis
- aid: marriott-international:marriott-international-properties-api
  name: Marriott International Properties API
  description: Search and retrieve hotel property information.
  humanURL: https://devportalprod.marriott.com/
  baseURL: https://devportalprod.marriott.com
  tags:
  - Properties
  properties:
  - type: OpenAPI
    url: openapi/marriott-international-properties-api-openapi.yml
  - type: Documentation
    url: https://devportalprod.marriott.com/apis
- aid: marriott-international:marriott-international-reservations-api
  name: Marriott International Reservations API
  description: Create and manage hotel reservations.
  humanURL: https://devportalprod.marriott.com/
  baseURL: https://devportalprod.marriott.com
  tags:
  - Reservations
  properties:
  - type: OpenAPI
    url: openapi/marriott-international-reservations-api-openapi.yml
  - type: Documentation
    url: https://devportalprod.marriott.com/apis
description: Marriott International is a global lodging company with a portfolio of more than 30 brands and thousands of properties
  across luxury, premium, select, and longer-stay hotel categories.

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