established · 1.2 marketcapability industryresourcedomain

Availability

Score 25.4 / 100 82 providers 85 APIs Search apis.io →
Variants seen in the corpus: Availabilityavailability🗓️ Availability

Providers using this tag (82)

Ranked by API Evangelist rating — Exemplar and Strong are expanded by default.

Exemplar 2 Complete, well-documented, and agent-ready
drchronoEHRElectronic Health RecordsHealthcareMedical Records7 APIs83.5AdyenPaymentsFinancial-ServicesFintech202 APIs67.1
Strong 10 Solid coverage with minor gaps
StayingAPITravelHospitalityaccommodation-datahotel-api5 APIs65.6Chili PiperSchedulingLead RoutingMeetingsSales16 APIs65.5LeanDataRevenue OperationsLead RoutingLead to Account MatchingSalesforce9 APIs60.7Oracle HospitalityTravelUnited StatesHospitalityHotels135 APIs60.5Unified.toIntegrationUnified-API140 APIs60.4MewsHospitalityHotelProperty ManagementPMS79 APIs58.7pVerifyHealthcareInsuranceEligibilityClaims13 APIs56.5ToastRestaurantPoint-of-SalePaymentsOnline Ordering26 APIs55.6Prime IntellectArtificial IntelligenceReinforcement LearningGPU ComputeDecentralized Compute20 APIs55.1ROLLERCompanyVenue ManagementAttractionsTicketing2 APIs54.8
Developing 30 Usable, with meaningful gaps to close
QuandooRestaurantReservationsBooking10 APIs52.8TUI GroupTravelUnited KingdomAviationAirline21 APIs51.9HostawayVacation RentalsShort-Term RentalsProperty ManagementChannel Manager16 APIs51.2ViatorTravelUnited StatesTours and ActivitiesExperience9 APIs50.8Amazon Global AcceleratorCDNGlobalLoad Balancing49 APIs50.7SkeduloCompanyEnterpriseSchedulingField Service Management67 APIs49.9Microsoft Windows 10DesktopOperating SystemUWPWin3277 APIs49.0Azure Database for MySQLDatabaseFlexible ServerManaged DatabaseMySQL10 APIs48.9LokkiCompanyClimate TechCircular EconomyRentals2 APIs48.4Google CalendarCalendarEventGoogle4 APIs47.7Salesforce Service CloudCase ManagementCRMCustomer ServiceHelp Desk18 APIs47.6OpenTravel AllianceTravelUnited StatesStandardsAviation4 APIs47.1LaFourchetteCompanyConsumerRestaurantReservations2 APIs45.4SavvyCalSchedulingCalendarAppointments6 APIs45.4KlookCompanyMarketplacesTravelTours and Activities4 APIs45.3RightslineContent ManagementEntertainmentMediaRights Management10 APIs43.4GopuffQuick CommerceInstant DeliveryLast MileGrocery6 APIs43.0TripadvisorAttractionsHotelsHospitalityRestaurant7 APIs42.8SpotOnRestaurantPoint-of-SalePaymentsOnline Ordering15 APIs42.37shiftsRestaurantSchedulingWorkforce ManagementEmployee Scheduling15 APIs42.0SnapprCompanyMarketplacePhotographyVideography9 APIs41.4Eat AppRestaurantReservationsTable ManagementHospitality7 APIs41.2HoliduCompanyTravel And LeisureVacation RentalsShort-Term Rentals23 APIs41.1_doneDeveloper ToolsUtility APIsAI Agentsagent-native27 APIs41.0TickittoCompanyTicketingEventMarketplace8 APIs40.9CalendlyAppointmentsAutomationBookingCalendars14 APIs40.6TicketmasterCommerceConcertsEntertainmentEvent8 APIs40.5University of CalgaryEducationHigher EducationUniversityResearch16 APIs40.3ScanSourceScanSourceDistributionBarcodesPoint-of-Sale7 APIs39.9BooqableRental ManagementInventoryEquipment RentalBookings11 APIs39.4
Thin 23 Limited public surface area
DanaAftermarketAuto PartsDrivetrainE-Commerce5 APIs38.9LodgifyVacation RentalProperty ManagementBookingChannel Manager6 APIs38.1EZRentOutEquipment RentalRental ManagementAsset TrackingInventory11 APIs38.0CronofySchedulingCalendarBooking5 APIs37.5ChargePointEV ChargingElectric VehiclesFleet ManagementEnergy Management7 APIs36.8RakutenE-CommerceTravelBooksRecipes33 APIs36.6SpotHeroParkingMobilityTransportationNavigation6 APIs36.4apaleoHospitalityPMSProperty ManagementHotels6 APIs35.5SalesgraphCompanySalesRevenue AutomationGo-To-Market6 APIs35.5UplistingVacation RentalShort-Term RentalChannel ManagerProperty Management9 APIs35.1TableCheckRestaurantReservationsBookingHospitality14 APIs34.3AppyWayParkingTrafficUrban MobilitySmart Cities30 APIs33.8DataDomeBot MitigationFraud ProtectionAccount ProtectionAd Fraud17 APIs33.6SpurwingSchedulingAppointmentsBookingCalendar4 APIs33.0DespegarCompanyConsumerTravelHotels20 APIs32.4Open Connectivity for Tours, Activities, and AttractionsActivitiesAttractionsOpen StandardTours4 APIs32.2Apex27Real-EstateUnited KingdomPropTechProperty Listings2 APIs31.9GandiDNSDomainsDomain RegistrarEmail17 APIs30.6EquinixFortune 1000Data CentersInterconnectionColocation74 APIs30.5SevenRoomsRestaurantReservationsWaitlistCRM1 API30.4booking-com24 APIs30.3IKEARetailHome FurnishingsConsumer ProductsOpen-Source6 APIs29.3Open LibraryAuthorsBooksCatalogCovers19 APIs26.3
Emerging 14 Early or largely undocumented
BoulevardSalon SoftwareSpa SoftwareMed SpaAppointment Scheduling7 APIs26.1Starwood Hotels and Resorts5 APIs26.1EV ConnectEV ChargingCharge Point ManagementCPMSMobility6 APIs23.7OrbFinOpsUsage-Based Billing10 APIs23.4Marriott InternationalFortune 5003 APIs23.1Electrify AmericaElectric VehiclesEV ChargingCharging StationsDC Fast Charging4 APIs22.3SiteMinderHospitalityHotel DistributionChannel ManagerBooking Engine5 APIs21.5WeWorkCo-WorkingFlexible WorkspaceReal-EstateWorkspace Booking2 APIs20.7SimplePracticeBehavioral HealthMental HealthEHRPractice Management1 API15.5TourAmigoTravelToursBookingTour Operators1 API14.9CampflareCampgroundsOutdoorRecreation1 API14.4ClassPassFitnessWellnessClass BookingMarketplace2 APIs13.0DenticonDentalPractice ManagementHealthcareDSO7 APIs12.8Solv HealthHealthcareUrgent CareAppointment BookingEHR Interoperability3 APIs12.5
Minimal 3 Almost no public developer surface
SuperbRestaurantReservationsHospitalityGuest Experience1 API10.7BT GroupTelecommunicationsTelcoMobile NetworkBroadband15 APIs8.5RappiDeliveryFood DeliveryGrocery DeliveryOn-Demand1 API5.5

APIs with this tag (85)

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 →

Exemplar 2 Complete, well-documented, and agent-ready
drchrono Availability APIThe Availability API from drchrono — 1 operation(s) for availability.83.5Adyen Availability APIThe Availability API from Adyen — 1 operation(s) for availability.67.1
Strong 13 Solid coverage with minor gaps
StayingAPI Agent SkillsPublished portable SKILL.md agent skill in the stayingapi/travel-skills GitHub repo, referenced from the SD...65.6StayingAPI MCP ServerHosted MCP server (Streamable HTTP, OAuth 2.1/PKCE) exposing 7 read-only tools mapping 1:1 to the REST endp...65.6Chili Piper Availability APIThe availability API from Chili Piper — 1 operation(s) for availability.65.5LeanData 🗓️ Availability APIThe availability endpoints return meeting configuration and open time slots used to render booking pages or...60.7OPERA Cloud Channel Configuration APIAPIs to cater for Channel Management functionality in OPERA Cloud. Channel Management allows a property to ...60.5OPERA Cloud Price Availability Rate APIAPIs to cater for Price and Rate Availability functionality in OPERA Cloud. Availability enables you to man...60.5OPERA Cloud Rate APIAPIs to cater for Rate Availability functionality in OPERA Cloud. Rate Management provides all the tools yo...60.5Unified.to availability APIThe availability API from Unified.to — 1 operation(s) for availability.60.4Mews Channel Manager APIThe Mews Channel Manager API is the two-way distribution surface between Mews and channel managers, online ...58.7pVerify Payers APIThe payer network surface: the full supported-payer catalog, live per-payer up/down status (the only pVerif...56.5Toast Restaurant Availability APIReturns whether a restaurant is currently accepting online orders, its expected prep times, and per-channel...55.6Prime Intellect Availability APIThe Availability API from Prime Intellect — 7 operation(s) for availability.55.1ROLLER REST APIGeneral-purpose real-time REST API for the ROLLER platform. Retrieve products, sessions and availability, a...54.8
Developing 28 Usable, with meaningful gaps to close
TUI Flight Availability Search API (NSKCC)Real-time flight availability and pricing search, documented as the first step in the booking process. A si...51.9TUI Meta Search Generics APIMetasearch partner interface onto TUI's accommodation portfolio for the Central region (Germany). Two docum...51.9TUI WallDy Holiday Offers Search API (search-walldy)Proxy service exposing the WallDy holiday search over Apigee X. A single POST /offers operation takes accom...51.9Hostaway Calendar APIRead and update the per-listing availability and nightly pricing calendar. Supports per-day retrieval, batc...51.2Viator Partner Availability APIReal-time availability and price checking plus availability-schedule retrieval for a single product, in bul...50.8Skedulo Availability APIThe Availability API from Skedulo — 6 operation(s) for availability.49.9Microsoft Windows 10 Availability APIThe Availability API from Microsoft Windows 10 — 1 operation(s) for availability.49.0Azure Database for MySQL Check Name Availability APICheck whether a proposed MySQL Flexible Server name is available within the Azure global namespace before c...48.9Lokki External APIThe partner-facing read-only Lokki API — seven GET operations over rental providers (stores), their store i...48.4Salesforce Service Cloud Availability APIAgent availability and routing47.6OpenTravel 2018A Facility ResourceSwagger 2.0 resource contract generated from the OpenTravel 2.0 Object Model, 2018A Object Suite. Defines P...47.1TheFork B2B APIPartners API for TheFork Manager. Read customers, reservations and reviews; drive the booking funnel with a...45.4Klook Availability APIThe Availability API from Klook — 2 operation(s) for availability.45.3Rightsline Availability APIContent availability and windowing43.4Rightsline Rights APIRESTful API for managing rights, licenses, and availability data. Supports creation, retrieval, modificatio...43.4Gopuff Availability APILook up real-time product availability at the Gopuff MFC servicing a given customer location.43.0Tripadvisor Availability APIAvailability endpoint called in real-time when users view hotel pages on Tripadvisor to retrieve pricing an...42.8SpotOn Availability APIAvailable reservation times and wait-time lookups.42.37shifts Availability APIEmployee availability records.42.0Snappr Availability APICheck available shoot start times.41.4Holidu Availability APIThe Availability API from Holidu — 1 operation(s) for availability.41.1Domain Availability CheckerCheck whether 1–10 domain names have an active registration record using the official RDAP protocol. Give t...41.0Tickitto Availability APIThe Availability API from Tickitto — 1 operation(s) for availability.40.9Calendly Availability APIEndpoints for viewing available times for event types and managing user availability schedules.40.6Ticketmaster Availability APICheck ticket availability for events40.5University of Calgary Availability APIRetrieve information about data in the database40.3ScanSource Availability APIReal-time inventory availability checks39.9Booqable Availability APIInventory availability, levels, and plannings.39.4
Thin 24 Limited public surface area
Dana Availability APICheck inventory availability.38.9Lodgify Availability APIAvailability calendars for properties and room types.38.1EZRentOut Availability APIBooked dates and per-location quantity for scheduling.38.0Cronofy Availability APIAvailability queries and hosted real-time scheduling.37.5ChargePoint Station Status APIQuery real-time status of ChargePoint charging station ports. Returns port availability states including AV...36.8Rakuten Travel Vacant Hotel Search APISearches for hotels with vacancy for given check-in and check-out dates, party composition, and budget filt...36.6SpotHero Availability APICheck real-time parking availability36.4SpotHero SpotNow APISpotNow is SpotHero's server and API built in Kotlin for real-time parking availability and instant booking...36.4apaleo Availability APIReal-time availability for units, unit groups, and services.35.5Salesgraph Status APIA public, unauthenticated JSON status endpoint at /api/status carrying the platform headline, overall statu...35.5Uplisting Availability APIProperties available for a date range.35.1TableCheck availability APIThe availability API from TableCheck — 1 operation(s) for availability.34.3AppyWay Availability APIThe Availability API from AppyWay — 1 operation(s) for availability.33.8DataDome DDoS ProtectDDoS Protect mitigates application-layer denial-of-service attacks using the same edge-distributed signal p...33.6Spurwing Availability APIThe Availability API from Spurwing — 2 operation(s) for availability.33.0Despegar Availability APIThe Availability API from Despegar — 2 operation(s) for availability.32.4Open Connectivity for Tours, Activities, and Attractions Availability APIThe Availability API from Open Connectivity for Tours, Activities, and Attractions — 2 operation(s) for ava...32.2Apex27 CRM APIThe Apex27 CRM API is the vendor's REST interface over the estate agency CRM, covering contacts, leads, lis...31.9Gandi Availability APICheck domain name availability and pricing.30.6Equinix availability APISecure Cabinet availability30.5SevenRooms APIThe SevenRooms API is a RESTful interface for hospitality data and operations. It exposes reservations, gue...30.4booking-com Availability APIEndpoints for updating room availability, pricing, and booking restrictions using B.XML format.30.3IKEA Availability APIEverything about Availability29.3Open Library Read APILegacy partner API that returns availability and read URLs for books matched by ISBN, OCLC, LCCN, or OLID i...26.3
Emerging 15 Early or largely undocumented
Boulevard Client API - Catalog & AvailabilityPublic-facing catalog reads that power a booking widget before a client ever creates a cart - business and ...26.1Starwood Hotels and Resorts Availability APIRate and availability operations26.1EV Connect Connectors APIInspect connectors on a charge point - type, power level, and live availability/status. Endpoints and base ...23.7Orb Availability APIThe Availability API from Orb — 1 operation(s) for availability.23.4Marriott International Availability APICheck room availability and rates.23.1Electrify America Availability APIReal-time charger availability API that returns live connector status (available, in-use, faulted, offline)...22.3SiteMinder SiteConnect APISiteConnect is SiteMinder's integration API for booking channels such as online travel agencies, wholesaler...21.5SiteMinder SMX APISMX is SiteMinder's API for metasearch publishers and hotel application providers that need a single standa...21.5WeWork Partner APIThe WeWork Partner API exposes the company's global workspace inventory to integrators so that Supply Partn...20.7SimplePractice Enterprise Scheduling APIPartner-only integration announced by SimplePractice Enterprise (September 2022) that connects to overlappi...15.5Tour Amigo Partner APITour Amigo's bookable two-way partner API powers its API-powered channel manager. Operators expose tours, a...14.9Campflare Availability & Alerts APIReal-time campground availability data at the campsite level across all public campgrounds Campflare tracks...14.4ClassPass Inventory APIClassPass's named partner integration API for studios and their scheduling/booking software. Per ClassPass ...13.0Denticon Appointments APIRead appointments on the schedule, query open scheduling availability, and book, confirm, reschedule, or ca...12.8Solv Final Mile APIReal-time same-day appointment availability and booking capability that lets digital-first and virtual-care...12.5
Minimal 3 Almost no public developer surface
Superb Reservations APILogical capability for creating and managing restaurant reservations - availability, floor and table assign...10.7Product and Network Availability APICheck product and network availability at a given address or premises for wholesale broadband and voice ser...8.5Rappi Partners REST APIThe Rappi Partners REST API is the integration surface used by approved restaurants, grocery and retail mer...5.5

Score breakdown

Frequency
58.0
log-scaled weighted occurrences
Breadth
2.2
spread across providers
Quality lift
47.0
mean composite of providers using it
Cohesion
6.4
strength of nearest seed neighbor

Related tags

Bookings 18 co-occurrences Reservations 20 co-occurrences Channel Manager 8 co-occurrences Booking 21 co-occurrences Attractions 5 co-occurrences Hospitality 19 co-occurrences Calendar 9 co-occurrences Hotels 9 co-occurrences

Where this tag comes from

Api tag84
Provider tag11
Openapi tag42
Openapi op tag70

Cohort brief

Auto-generated

The 82 providers in the APIs.io catalog tagged Availability, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.

Providers
82
all scored
Mean Kin Score
38.6
+17.9 vs catalog 20.7
Mean Agent Readiness
23.8
+14.1 vs catalog 9.7
Spread
5.5–83.5
median 39.7 · σ 14.9
How the 82 split by band
Exemplar 2Strong 10Developing 30Thin 23Emerging 14Minimal 3
Facet averages, against the whole catalog
FacetThis cohortCatalogDifferenceScored
Contract Quality 45.1 17.5 +27.6 82
Developer Ergonomics 36.4 17.9 +18.5 82
Access Clarity 38.8 22.3 +16.5 82
Operational Transparency 24.7 11.3 +13.4 82
Discoverability 71.8 60.4 +11.4 82
Contract Governance 13.9 6.4 +7.5 82

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
ArtifactThis cohortCatalogDifference
MCP server (any) 26% 16% +10
MCP server (first-party) 10% 7% +3
Agent Skills 0% 0% 0
OAuth scopes 21% 9% +12
Security 100% 88% +12
Arazzo workflows 7% 2% +5
Governance rules 34% 13% +21

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. 1 drchrono 83.5
  2. 2 Adyen 67.1
  3. 3 StayingAPI 65.6
  4. 4 Chili Piper 65.5
  5. 5 LeanData 60.7
  6. 6 Oracle Hospitality 60.5
  7. 7 Unified.to 60.4
  8. 8 Mews 58.7
  9. 9 pVerify 56.5
  10. 10 Toast 55.6
Top by Agent Readiness
  1. 1 StayingAPI 59.4
  2. 2 LeanData 48.2
  3. 3 LaFourchette 47.2
  4. 4 Chili Piper 47.1
  5. 5 Viator 45.9
  6. 6 Salesgraph 44.6
  7. 7 OpenTravel Alliance 43.9
  8. 8 Holidu 42.9
  9. 9 TUI Group 42.3
  10. 10 Adyen 39.4
All 82 members of this roster resolve to a scored provider in the catalog.Generated from the catalog build of 25 August 2026, across 26891 providers, using the same computation served by the APIs.io cohort API. Briefs are published for rosters of 5 or more scored providers; below that a distribution is not meaningful.

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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/availability"
All tags 
curl "https://apis.io/api/v1/tags?limit=25"
As a scored cohort 
curl "https://apis.io/api/v1/cohorts/tag/availability"
The distribution (Pro) 
curl "https://apis.io/api/v1/cohorts/tag/availability/stats" \
  -H "X-API-Key: $APIS_IO_KEY"

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