OpenTravel Alliance
The OpenTravel Alliance is a volunteer, non-profit travel technology standards body headquartered in Melbourne, Florida, United States. Since 1999 it has published the OpenTravel Specification — the OTA 1.0 XML message suite (releases 2001A through 2024A) and the model-driven OpenTravel 2.0 Object Model (OTM), which generates XML Schema, JSON Schema and Swagger 2.0 resource contracts — plus the OpenTravel Code Lists used across air, hospitality, car rental, cruise, rail, GDS, channel and technology-provider systems. OpenTravel does not operate a booking service or sit in the distribution chain itself; it supplies the message vocabulary that suppliers, GDSs, channel managers and OTAs implement between each other, which makes it a switching-cost reducer rather than a switching-cost holder. Its API posture is honest but thin: there is no OpenTravel-operated runtime API and no public certification registry, though it does run a free self-serve developer portal — the OpenTravel Developers Network at opentraveldevelopersnetwork.com — and, as of 2026, an OAuth 2.1 protected Model Context Protocol server on opentravel.org. Specifications are royalty-free and free of charge, but the canonical download is behind a name/company/email lead-capture form with terms acceptance, and the OTM repository and member review periods are membership-gated ($950–$11,250/yr by revenue band). A public, unlicensed GitHub mirror at github.com/OpenTravel/OpenTravel-Specifications carries the bulk of the corpus — including eight Swagger 2.0 resource contracts — and is the only ungated route to machine-readable artifacts. The organization has announced work with the Linux Foundation to form an Open Travel Foundation.
OpenTravel Alliance publishes 4 APIs on the APIs.io network, including OpenTravel 2020A Hotel Descriptive Content Resource, OpenTravel 2020A Facility Resource, OpenTravel 2018A Hospitality Offers Resource, and 1 more. Tagged areas include Travel, United States, Standards, Aviation, and Hospitality.
The OpenTravel Alliance catalog on APIs.io includes 1 event-driven AsyncAPI specification.
OpenTravel Alliance’s developer surface includes getting-started guide, support, authentication, changelog, CLI, code examples, API reference, and 45 more developer resources.
Kin Score
Kin Score
How this is scored →scored 2026-08-17 · rubric v0.11.0
APIs 4
Individual APIs this provider publishes, each with its own machine-readable definition.
OpenTravel 2020A Hotel Descriptive Content Resource
Swagger 2.0 resource contract generated from the OpenTravel 2.0 Object Model, 2020A Object Suite. Defines three operations for hotel descriptive content — GET /HotelDescriptiveC...
OpenTravel 2020A Facility Resource
Swagger 2.0 resource contract generated from the OpenTravel 2.0 Object Model, 2020A Object Suite. Defines POST /Facilities and GET /Facilities/{Identifier} with 232 model defini...
OpenTravel 2018A Hospitality Offers Resource
Swagger 2.0 resource contract generated from the OpenTravel 2.0 Object Model, 2018A Object Suite. Defines POST /HospitalityOffers and POST /HospitalityPropertyOffers with 372 mo...
OpenTravel 2018A Facility Resource
Swagger 2.0 resource contract generated from the OpenTravel 2.0 Object Model, 2018A Object Suite. Defines POST /Facilities, POST /HospitalityFindHospitalityAvailability and POST...
Open Collections 8
Open, tool-agnostic API collections (OpenAPI-derived and Bruno).
FacilityResource
OPEN COLLECTIONFacilityResource
OPEN COLLECTIONHospitalityOffersResource
OPEN COLLECTIONHospitalityOffersResource
OPEN COLLECTIONFacilityResource
OPEN COLLECTIONFacilityResource
OPEN COLLECTIONHotelDescriptiveContentResource
OPEN COLLECTIONHotelDescriptiveContentResource
OPEN COLLECTIONScroll for all 8
MCP Servers 1
Model Context Protocol servers that expose these APIs to AI agents.
Event Specifications 1
AsyncAPI definitions for this provider's event-driven and streaming APIs.
JSON Schema 10
Standalone JSON Schema definitions for this provider's data models.
CodeList
JSON SCHEMAHospitalityFacility
JSON SCHEMAHospitalityOffers
JSON SCHEMACodeList
JSON SCHEMACodeList
JSON SCHEMACommon
JSON SCHEMAFacilityResource
JSON SCHEMAHospitalityContent
JSON SCHEMAOrganization
JSON SCHEMAOrganizationHospitality
JSON SCHEMAScroll for all 10
Examples 7
Example request and response payloads for these APIs.
Scroll for all 7
Security Posture 2
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Scopes 1
OAuth scopes governing access to this provider's APIs.
Agentic Access 1
Recommended x-agentic-access execution contracts for AI agents.
Resources
Get Started 5
Portal, sign-up, and the first successful call
Documentation 6
Reference material describing how the API behaves
Agent Surfaces 5
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 7
Pagination, idempotency, versioning, errors, and events
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Build 5
SDKs, sample code, and the tooling you integrate with
Access & Security 3
Authentication, authorization, and security posture
Operate 6
Status, limits, changes, and where to get help
Commercial 4
Pricing, plans, and the legal terms of use
Company 4
The organization behind the API
Other 7
Properties that don't map to a standard resource type
Scroll for all 7