Ranked by the provider's API Evangelist rating — the Kin Score is scored per provider, not per API, so every API of a provider shares its band. How the rating works →

Strong 2 Solid coverage with minor gaps

Cobot Booking APIA booking of a resource in the booking calendar.58.8 Voygr Calls APIProgrammatic outbound phone calls executed by an AI voice agent. Submit a task either as a plain-language b...55.0

Developing 20 Usable, with meaningful gaps to close

Inspectorio BOOKING APIThe BOOKING API from Inspectorio — 2 operation(s) for booking.53.6 TUI Flight OTA APIDistribution API for TUI fly Benelux content — the routes and destinations sold on tuifly.be, tui.nl, tuifl...51.9 TUI New Skies Digital APIJSON API onto the Navitaire New Skies passenger service system, used to create and maintain flight bookings...51.9 TUI New Skies Payment APIPCI-DSS scoped payment proxy in front of Navitaire New Skies, exposing three channels: REST Digital API pay...51.9 Booking and Referral Standard (BaRS) - FHIR APISends booking and referral information between NHS service providers using the Booking and Referral Standar...51.5 Zoom Scheduler APIThe Zoom Scheduler API enables developers to schedule, manage, and retrieve details about meetings, webinar...51.1 Amadeus Booking APIThe Booking API from Amadeus — 6 operation(s) for booking.51.0 Booksy Public APIThe Booksy Public API is a partner-facing REST API for managing Booksy businesses and their booking data. I...50.7 Traveloka Booking APIThe Booking API from Traveloka — 4 operation(s) for booking.50.4 Egencia Context SSO APISingle sign-on entry point that carries contextual data into the Egencia booking flow at authentication tim...47.6 Egencia Validation SPIA service provider interface, not a consumable API - Egencia calls the customer. At checkout, when a travel...47.6 BetGenius Booking API V1The pre-v2 Booking API, still served alongside V2 from the same Swashbuckle discovery list. The same three ...45.8 BetGenius Booking API V2The current Booking API. Three operations that let a contracted sportsbook list the upcoming fixtures it ca...45.8 Virgin Atlantic NDC OrderCreate APIIATA NDC 21.3 OrderCreate message. Creates the Virgin Atlantic Order and PNR from a priced offer, including...45.3 Concur Direct Connect Ground Transportation APIEnables travel users to access ground transportation inventory from service providers, supporting search, r...43.2 Concur Direct Connect Hotel Service APIProvides a method for custom hotel source suppliers to provide hotel inventory, rates, and booking related ...43.2 Zenoti APIREST API for the Zenoti beauty/wellness/fitness platform covering centers, appointments, guests, invoices a...42.3 WellnessLiving Booking APIThe Booking API from WellnessLiving — 4 operation(s) for booking.41.9 Kadence Booking APIThe Booking API from Kadence — 6 operation(s) for booking.41.6 NHS Digital Booking APIThe Booking API from NHS Digital — 2 operation(s) for booking.41.6

Thin 37 Limited public surface area

TicTacTrip Booking APIThe Booking API from TicTacTrip — 9 operation(s) for booking.38.3 Sabre Air Booking APISabre Air Booking API enables flight booking, passenger name record (PNR) creation and management, seat sel...38.2 Sabre Booking Management APISabre Booking Management API provides unified management of multi-segment travel reservations including fli...38.2 Sabre Cars APISabre Cars API provides car rental search, availability, rate shopping, reservation, and management APIs fo...38.2 Sabre Rail APISabre Rail API provides rail ticket search, booking, and management capabilities connecting to over 30 rail...38.2 WestJet Direct Connect APIWestJet's IATA New Distribution Capability (NDC) direct-connect interface for travel sellers, offered in ND...38.2 DSV Booking API (Air, Sea, Road EU, Rail)Submits and updates shipment bookings to DSV across air, sea, European road and rail. Carries GS1 SSCC pack...38.1 DSV Connect Booking API (SOAP)SOAP BookingWebService covering land, air and ocean (LCL/FCL) bookings. Inherited from the DB Schenker esta...38.1 DSV SCM Booking APICreates and searches bookings in the DSV SCM (eDC) platform, including original/copy bill of lading counts,...38.1 DSV XPress Booking APICreates express/parcel shipments and retrieves package labels. Carries per-package air waybill numbers, und...38.1 RateHawk Booking APIThe Booking API from RateHawk — 3 operation(s) for booking.37.9 Rakuten Travel Vacant Hotel Search APISearches for hotels with vacancy for given check-in and check-out dates, party composition, and budget filt...36.6 Booking and Referral - FHIR APISend booking and referral information between NHS service providers using the NHS Booking and Referral Stan...36.3 Trip Ninja Flights Core APIA flight search and reporting surface published by Trip Ninja in its own public GitHub documentation reposi...35.9 Trip Ninja MSDP (Dynamic Packaging) APIMSDP is Trip Ninja's multi-source dynamic packaging product — flights and hotels combined into one sellable...35.9 Trip Ninja Pricing & Booking APIThe fullest Trip Ninja transaction surface, published in Trip Ninja's public GitHub documentation repositor...35.9 Trip Ninja SmartFlights APISmartFlights is Trip Ninja's current (v3) flight-construction API. A travel platform posts a traveller sear...35.9 Trip Ninja v2 Legacy APITwo further GitHub-published OpenAPI 3.0.0 documents describing the 2.0.0-era surface — a core document (/g...35.9 apaleo Booking APIBookings, reservations, blocks, groups, and offers.35.5 Yardi Kube APIAPI and webhook integration for Yardi Kube, the coworking and flexible workspace management platform, cover...35.2 Hotelbeds Booking APIThe Booking API from Hotelbeds — 5 operation(s) for booking.35.0 United Airlines Booking APIFlight booking and reservation management34.6 Nuitée (LiteAPI) Booking APIPrebook, book, retrieve, list, and cancel reservations.34.5 Autopay Booking APIPermit booking creation, modification, status, and availability33.7 Autopay Booking APIThe Autopay Booking API enables assignment of anonymous parking permits to vehicles, supporting short-term ...33.7 Air Canada NDC OrderCreate APIIATA NDC 17.2 OrderCreate message pair (OrderCreateRQ / OrderViewRS). Creates an actual reservation and ret...32.6 Despegar Booking APIThe Booking API from Despegar — 1 operation(s) for booking.32.4 Picker booking APIThe booking API from Picker — 60 operation(s) for booking.31.8 Amadeus Reservations Booking APIThe Booking API from Amadeus Reservations — 5 operation(s) for booking.31.7 samedi Booking APIOAuth2 / OpenID-Connect secured API to discover bookable resources and book and manage patient appointments...30.5 Acuity Scheduling REST API v1REST API for managing appointments, appointment types, clients, calendars, availability, intake forms, prod...29.5 Shipment Booking DHL FreightCreates European palletized road freight transport orders through DHL Freight.29.5 Shipment Booking DHL Global ForwardingEnables shipment and transport bookings for multiple freight types via DHL Global Forwarding.29.5 Zcal Scheduling LinksUnlimited shareable scheduling links, meeting polls, and customizable booking pages let invitees self-serve...28.6 Flix APIThe partner-facing Flix API, published through the Flix Developer Portal. Documentation covers API referenc...27.9 British Airways NDC APIBritish Airways' IATA New Distribution Capability API - a direct link into BA's host reservation system for...26.8 Instawork Partner MCP ServerHosted Model Context Protocol server that lets business partners find hourly workers and book shifts on Ins...26.6

Emerging 27 Early or largely undocumented

Boulevard Client API - Booking Cart & CheckoutBuild custom, on-brand self-booking experiences on top of a cart workflow - create a cart for a location, a...26.1 Travelport Booking APIThe Booking API from Travelport — 1 operation(s) for booking.25.6 Jetstar APIThe Jetstar API is Jetstar's direct-connect distribution channel for Registered Travel Agents and partners....25.0 Turneo v2 APIREST booking API for searching experiences, retrieving options and availability, and assembling and confirm...24.5 HyperGuest Connectivity APIHyperGuest's unified connectivity API for travel demand partners and accommodation providers to exchange re...24.0 CTM Portal Host APIThe private back-end API for CTM Portal, CTM's single sign-on customer portal. It is not documented, not an...23.9 Kuehne+Nagel BookingAir APIA service for consumers to book an air shipment, optionally applying product prices supplied via the Airfre...23.9 Kuehne+Nagel BookingRoad APIA service for consumers to book road shipments, with master-data category lookups and a document upload ope...23.9 Kuehne+Nagel OrderBooking APICreate and update order bookings by shipper's reference and poll a process state. Discriminated booking bod...23.9 Trainline Global APITrainline Partner Solutions' wholesale rail and coach distribution API, sold to travel sellers, OTAs, TMCs ...23.8 Mindtrip FlightsAgentic AI flight discovery, booking, and payments experience launched in May 2026, powered by Sabre's trav...22.7 Mindtrip HotelsIn-app hotel discovery and booking experience using partner travel content for rates, availability, and res...22.7 HeadOut Booking APIThe Booking API from HeadOut — 2 operation(s) for booking.21.7 Air Transat NDC Direct Connect API (Radixx ConnectPoint)The direct-connect flight shopping, booking, payment and servicing API that Air Transat publishes to OTA an...21.6 TourRadar Distribution APIUnified B2B API giving platforms, travel agencies, airlines, and GDSs access to TourRadar's network of 2,50...21.2 Lufthansa Cargo smartBooking APIPrior-agreement API. Lufthansa Cargo's digital booking connect for forwarders wiring an in-house system to ...20.3 WebCargo Booking APIPartner-gated booking surface behind WebCargo by Freightos, giving freight forwarders and carriers live, bo...19.3 Breeze Airways NDC GatewayThe Breeze Airways NDC gateway is the airline's direct-connect distribution API for accredited travel partn...18.4 Booking APIsSuite of pre-booking, booking, and post-booking APIs covering rate requests, booking creation, amendments, ...17.7 CargoAi Booking APIBook a quoted air cargo option, read a booking back by flight UUID, and cancel a booking made through Cargo...17.7 C.H. Robinson Carrier APIThe C.H. Robinson Carrier API enables carriers to find, offer, book, and auto-create loads directly from th...16.6 Emirates SkyCargo Host-to-Host APIA direct system-to-system API that Emirates SkyCargo advertises on its own Digital Booking Channels page, d...15.4 Hopper Consumer AppConsumer mobile and web app for booking flights, hotels, homes, and cars. Pioneered price prediction, Price...14.4 LIFT Aircraft Site MCPThe public Model Context Protocol endpoint served by LIFT Aircraft's Wix-hosted site. Exposes nine tools th...13.9 Solv Final Mile APIReal-time same-day appointment availability and booking capability that lets digital-first and virtual-care...12.5 Thyrocare TechSo Partner API (BTS)Partner order-booking API used by Thyrocare's DSA (Direct Selling Agent) franchise network for booking diag...11.4 CMA CGM Booking Request APIBooking request API allowing shippers, NVOCCs, and freight forwarders to submit, amend, and cancel ocean bo...11.3

Minimal 5 Almost no public developer surface

SnapTravel Partner Search APIThe partner-facing hotel search API operated by Super.com under its original SnapTravel brand. The host is ...9.5 Hapag-Lloyd API PortalHapag-Lloyd''s API Portal exposes container shipping APIs covering container tracking and tracing, vessel s...7.2 Carnival Brand Booking PortalsEach Carnival Corporation brand operates its own online booking portal for cruise search, itinerary selecti...7.0 Princess MedallionClass AppThe Princess MedallionClass app is the companion mobile experience for OceanMedallion. It manages pre-cruis...7.0 Clearwave Scheduling APIOnline and self-service appointment scheduling where every booking, cancellation, and reschedule syncs auto...6.7

Score breakdown

Frequency

68.2

log-scaled weighted occurrences

Breadth

6.2

spread across providers

Quality lift

27.7

mean composite of providers using it

Cohesion

34.9

strength of nearest seed neighbor

Where this tag comes from

Provider tag188

Api tag91

Openapi tag16

Openapi op tag72

Cohort brief

Auto-generated

The 226 providers in the APIs.io catalog tagged Booking, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.

Providers

226

all scored

Mean Kin Score

22.9

+2.2 vs catalog 20.7

Mean Agent Readiness

12.1

+2.4 vs catalog 9.7

Spread

3.3–69.7

median 18 · σ 15.3

How the 226 split by band

Exemplar 1Strong 6Developing 30Thin 52Emerging 77Minimal 60

Facet averages, against the whole catalog

Facet	This cohort	Catalog	Difference	Scored
Discoverability	64.5	60.4	+4.1	226
Contract Quality	20.5	17.5	+3	226
Access Clarity	24.5	22.3	+2.2	226
Developer Ergonomics	19.7	17.9	+1.8	226
Operational Transparency	12.2	11.3	+0.9	226
Contract Governance	7	6.4	+0.6	226

A facet is averaged over the members that carry it, not over the whole cohort — the “Scored” column is that count. Averaging an absent facet as zero would score our own coverage gaps as the providers’ posture.

What this cohort publishes

Artifact	This cohort	Catalog	Difference
MCP server (any)	21%	16%	+5
MCP server (first-party)	7%	7%	0
Agent Skills	0%	0%	0
OAuth scopes	13%	9%	+4
Security	94%	88%	+6
Arazzo workflows	3%	2%	+1
Governance rules	10%	13%	-3

mcp_pct counts any mcp/ artifact including ones API Evangelist derived from the provider OpenAPI; mcp_first_party_pct counts only servers the provider publishes. Prefer the latter.

Top by Kin Score

1 Zocdoc 69.7
2 Mindbody 60.8
3 Oracle Hospitality 60.5
4 Mews 60.4
5 Cobot 58.8
6 VOYGR 55
7 Engine 54.5
8 Inspectorio 53.6
9 Quandoo 52.8
10 TUI Group 51.9

Work with this as data

Every tag here is available over the APIs.io API and to AI agents over MCP.

MCP server

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Tools for tags

7 MCP tools reach this

find_tagsBrowse and filter every tag in the catalog.
get_cohortThis tag as a scored cohort — every provider carrying it, with scores.
cohort_statsPRO — the distribution across this tag: mean, median, band split, adoption rates.
cohort_rankingsPRO — the leaderboard, on composite AND agent-readiness axes.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools

Call it yourself

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This tag

curl "https://apis.io/api/v1/tags/booking"

All tags

curl "https://apis.io/api/v1/tags?limit=25"

As a scored cohort

curl "https://apis.io/api/v1/cohorts/tag/booking"

The distribution (Pro)

curl "https://apis.io/api/v1/cohorts/tag/booking/stats" \
  -H "X-API-Key: $APIS_IO_KEY"

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Booking

Providers using this tag (226)

APIs with this tag (91)