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 11 Complete, well-documented, and agent-ready

Salesforce Field Service APIThe Salesforce Field Service API provides access to Field Service Lightning data and operations including w...87.5 Salesforce Scheduling APIThe Scheduling API from Salesforce — 1 operation(s) for scheduling.87.5 Automation Studio APIAPI for initiating and managing marketing automations, including file upload, download, decryption, compres...82.6 athenaOne APIsThe athenaOne proprietary REST API suite provides over 800 endpoints covering patient management, schedulin...76.7 Nylas Scheduling APIScheduler. Booking configurations, scheduling sessions, availability lookups and booking lifecycle manageme...76.6 Treasure Workflow APITreasure Workflow — the Digdag-based orchestration API. 43 operations over projects, workflow definitions, ...74.3 eClinicalWorks FHIR APIProvider-centric, backend and bulk FHIR R4 APIs for integrating with the eClinicalWorks EHR. Supports SMART...74.2 healow Patient-Centric FHIR APIPatient-facing FHIR R4 APIs accessible through the healow developer portal, letting third-party application...74.2 Postman Monitors APIThe Monitors API runs Postman Collections on a recurring schedule to validate API health, performance, and ...72.5 Docplanner Integrations APIOAuth 2.0 REST API (v1.14.0) for medical-software vendors integrating a practice-management system with the...71.2 Healthie GraphQL APIThe Healthie GraphQL API is the single contract behind the entire Healthie platform — the same API that pow...68.2

Strong 17 Solid coverage with minor gaps

Tebra Appointments APISOAP operations for scheduling - GetAppointment, GetAppointments, CreateAppointment, UpdateAppointment, Upd...65.4 YARN Queue Manager APIYARN Queue Manager exposes a REST API for managing capacity scheduler queues, ACLs, and resource allocation...64.9 Weave Scheduling APIAppointments, appointment types, schedules, and calendar events.64.1 Buffer APIGraphQL API for scheduling and publishing posts, managing social media channels, handling content ideas and...63.2 Chili Piper MCP ServerOfficial hosted remote MCP server for Chili Piper, served over streamable HTTP at https://fire.chilipiper.c...63.1 IFS Field Service Management APIIFS Field Service Management APIs enable work order management, scheduling optimization, technician dispatc...62.9 Publora APIREST API and remote MCP server for scheduling and publishing social media posts across ten platforms from o...60.6 ThingSpeak TimeControl APICron-style scheduler that fires ThingHTTP, TalkBack, or MATLAB Analysis actions at a chosen time, recurring...60.6 Smartlead Campaigns APIREST endpoints to create, list, fetch, update, schedule, pause, resume, and delete email campaigns, plus ma...60.4 Assembled Activities APICreate, list, and delete activities — the scheduled shifts, breaks, time off, training, and meetings that m...59.2 Zype Playout Scheduler APICloud playout for FAST and linear channels: channels, HLS/UDP/RTMP delivery profiles, destinations and conn...58.1 Jane Appointments APIRetrieve and list one-on-one appointment bookings for a clinic, with filtering by patient, staff member, lo...57.0 Jane Practice and Scheduling APIRead clinic reference and scheduling data — locations, staff members, disciplines, treatments, and company ...57.0 Veradigm Unity APIThe Veradigm Unity API exposes clinical, scheduling, demographic, and practice management functions across ...56.6 Microsoft Exchange Scheduling APIOperations for scheduling and free/busy information56.4 Microsoft Bookings APIManage customer bookings, appointment scheduling, business services, and staff information for enterprise a...55.6 AdvancedMD Connect APIsAdvancedMD's proprietary partner API family, published in both XML-RPC and REST formats, which lets develop...54.5

Developing 42 Usable, with meaningful gaps to close

Zoho BookingsThe Zoho Bookings API allows developers to integrate online scheduling and appointment management with thir...54.1 Zoho CalendarThe Zoho Calendar API provides REST endpoints to customize calendar features, allowing you to manage calend...54.1 EMS Platform ServicesRESTful API layer for Accruent EMS space and event scheduling, documented as a Platform as a Service surfac...53.7 Zoom Calendar APIThe Zoom Calendar API enables developers to manage calendar events, automate scheduling, sync across platfo...53.3 Zoom Workforce Management APIThe Zoom Workforce Management API enables developers to build applications that manage workforce scheduling...53.3 Enterprise Manager Blackout Management APIREST API for managing blackouts (maintenance windows) in Enterprise Manager, including creating, editing, d...52.6 Enterprise Manager Job System APIAPI for creating, managing, and monitoring Enterprise Manager jobs and tasks including scheduling, executio...52.6 MISO CROW API (Outage Scheduling)The outage-scheduling interface, built on the CROW product, documented in a PDF reference plus a MISO-speci...51.9 Semble Scheduling & Bookings APIGraphQL surface for appointments and scheduling — bookings, bookings-by-id, availabilities, availability ru...51.9 Everbridge Scheduling APIScheduling operations51.3 Booksy Public APIThe Booksy Public API is a partner-facing REST API for managing Booksy businesses and their booking data. I...51.2 PJM InSchedule Browserless APIThe browserless REST interface to PJM InSchedule, the eTool market participants use to submit and retrieve ...51.0 IESO Outage Coordination and Scheduling System (OCSS) Web ServiceA web service, specified in SPEC-113, for submitting and managing transmission and generation outage reques...50.7 Google Calendar APICreate and manage calendars, events, and attendees.50.6 Sanity Scheduling APIThe Sanity Scheduling API enables scheduling content for future publication or unpublication at specific ti...50.6 SAP BI Tools Scheduling APISchedule reports and documents for execution with configurable parameters, recurrence, and destination opti...50.3 SAP BusinessObjects BI Platform RESTful Web ServicesREST API for SAP BusinessObjects BI Platform for managing documents, users, and scheduling reports.50.3 DexCare REST APIRESTful service for accessing business information and performing actions against DexCare-managed healthcar...50.2 NationGraph Scheduling APIThe Scheduling API from NationGraph — 3 operation(s) for scheduling.50.0 Skedulo scheduling APIThe scheduling API from Skedulo — 7 operation(s) for scheduling.49.8 Paradox Scheduling APIManage interview scheduling, interviewers, settings, rooms, alerts, and history47.7 Nittei Scheduler APINittei is MeetsMore's self-hosted calendar and scheduler server, written in Rust (Axum + SQLx + PostgreSQL)...47.6 Indeed Interview APIA GraphQL API for scheduling, updating, retrieving information about, and canceling virtual interview event...46.7 Dynamics 365 Field Service APIAPI for managing field service operations including work orders, scheduling, resource availability, and wor...46.2 ADP Time and Labor APIThe ADP Time and Labor API enables integration with ADP's timekeeping system for time entries, schedules, t...45.9 Workday Integration Scheduling APIThe Scheduling API from Workday Integration — 2 operation(s) for scheduling.45.4 Alteryx Server APIREST API for managing workflows, schedules, and jobs on Alteryx Server. Provides Subscription, User V2, Adm...45.2 Loomly Platform API (partner-gated)Loomly operates an OAuth 2.0 protected platform API that backs its Zapier app — 12 triggers (new post, post...44.8 Aramark Marko Labor ScheduleThis API will return Employee Scheduled Shift information44.1 OpenShift Schedule and Quota APIAPI for managing scheduling and quota resources including ResourceQuota, LimitRange, PriorityClass, and Clu...43.7 Oracle Primavera Analytics APIOracle Primavera Analytics provides reporting and business intelligence APIs for portfolio performance insi...43.7 Oracle Primavera Gateway Integration APIOracle Primavera Gateway provides integration APIs for connecting Primavera P6 with other Oracle and third-...43.7 Oracle Primavera P6 Scheduling APIOracle Primavera P6 provides project scheduling and portfolio management APIs for construction, engineering...43.7 AlayaCare Scheduler APIREST API for accessing and managing visit scheduling data, including visit details, facility information, a...43.6 75F Special Schedules APIA v2 REST API for exception-based ("special") schedules applied at building or zone level — create, update ...43.0 Koppla APIkoppla advertises an "Offene Schnittstelle / API" (open interface / API) as an included capability of its E...41.7 TimeEdit Scheduling TenantChalmers' timetable and room-booking layer is a TimeEdit tenancy, public at cloud.timeedit.net/chalmers/web...41.5 Fountain Scheduling APIManage interview / calendar slots and bookings.40.6 Fountain Worker APIPost-hire REST API covering worker profiles (activation and deactivation), employment records, document sub...40.6 Harver scheduling APIThe scheduling API from Harver — 2 operation(s) for scheduling.40.6 Calendly Embed APIThe Calendly Embed API allows developers to integrate Calendly scheduling pages directly into their website...39.9 Calendly Webhook APIThe Calendly Webhook API enables developers to receive real-time notifications when scheduling events occur...39.9

Thin 39 Limited public surface area

Capella Space Tasking APIThe Capella Tasking API lets customers submit imagery tasking requests against the Capella SAR constellatio...39.1 Celery Beat APICelery Beat is the scheduler for periodic tasks, supporting crontab-style schedules, interval schedules, an...39.0 QlikView Distribution Service API (IQDS)API interface for the QlikView Distribution Service, providing programmatic access to document distribution...39.0 CMISGo Timetabling (gated)Student and staff timetabling at timetable.reading.ac.uk. Operator is the institution — the host is the uni...38.1 Sesame HR Scheduling APIPlanners, shifts, and schedule templates.37.5 Lever Interviews APIThe Interviews API from Lever — 2 operation(s) for interviews.37.3 Webex Meetings APIThe Webex Meetings API enables scheduling, updating, deleting, and listing of Webex meetings. Endpoints sup...37.1 Workable Events APIThe Events API from Workable — 2 operation(s) for events.37.0 Cal.com REST API v2REST API providing full programmatic control over Cal.com resources including calendars, event types, booki...36.8 Crunchtime Inventory & Labor APIThe Crunchtime Inventory & Labor API is a REST/JSON web-services API for integrating restaurant back-office...36.8 ScreenCloud Studio Playlists APIGraphQL operations for building and maintaining playlists - the ordered sequences of content shown on scree...36.8 Qlik Reload Tasks APIManages scheduled reload tasks for analytics applications, enabling automated data refresh on defined sched...36.6 Qlik Tasks APIManages general task scheduling and execution within Qlik Cloud for orchestrating platform operations.36.6 OptiSigns Schedules APICreate and manage schedules that control when assets and playlists play on which devices across dates, time...36.4 Spring Boot 3 Scheduling APIScheduled task inspection36.4 Cornell Class Roster APIPublic, read-only API (version 2.0) for Cornell Class Roster data: scheduled classes with Course of Study d...35.7 EasyCronEasyCron is used to run automated tasks, making API calls on a variety of schedules, using all of the APIs ...35.5 Apache DolphinScheduler REST APIThe DolphinScheduler REST API enables programmatic management of projects, workflow definitions (DAGs), wor...34.4 SmartRecruiters Interview APIThe Interview API provides self-scheduling capabilities and interview template management for streamlining ...34.4 Planday APIPlanday's REST API secured by OAuth2 bearer tokens, separated into domains (HR, Absence, Pay, Payroll, Port...33.8 Modal Cron and Scheduled FunctionsRun functions on a recurring schedule using modal.Period or modal.Cron passed to @app.function(schedule=......33.7 VATSIM Events APIThe Events API from VATSIM — 2 operation(s) for events.33.7 Jifflenow REST APIThe Jifflenow REST API exposes the meeting-automation core of Cvent Jifflenow as JSON over HTTPS. Documente...32.9 Clockify Scheduling APIThe Scheduling API from Clockify — 10 operation(s) for scheduling.32.0 Homebase APIThe Homebase REST API provides programmatic access to employee scheduling, time tracking, payroll synchroni...31.6 Sendible APIREST API for managing social media clients, scheduling posts, monitoring mentions, and accessing analytics ...30.7 Paylocity Scheduling APIThe Scheduling API from Paylocity — 3 operation(s) for scheduling.30.6 Vetspire Schedule & Appointments APIGraphQL operations over the Schedule domain - list appointments for a location and date range, read provide...30.3 TP Timetable Web Service (NTNU instance)TP (Timeplan) is the timetable, room-booking and course-activity system NTNU uses, hosted on the shared edu...29.9 WellSky Personal Care Connect APIFHIR-compliant API for WellSky Personal Care software platform enabling data integration and interoperabili...29.9 AAR Aerostrat (Aerros)Aerostrat is AAR's maintenance planning software subsidiary, acquired in 2025 and run under Trax. Its flags...29.7 Doodle Scheduling API (Deprecated)The Doodle REST API for programmatically creating and managing group polls, booking pages, and meeting sche...29.6 Clockwise REST APIREST API for the Clockwise AI calendar optimization platform, providing programmatic access to focus time m...29.5 HashiCorp NomadA simple and flexible scheduler and orchestrator to deploy and manage containers and non-containerized appl...29.2 UKG Scheduling APIShifts, schedules, and schedule management29.0 Boulevard Admin API - Appointments, Staff & LocationsRead and sync appointment, staff, and location data across a business's calendar - past, current, and futur...28.9 Zcal Scheduling LinksUnlimited shareable scheduling links, meeting polls, and customizable booking pages let invitees self-serve...28.0 Apache Mesos Scheduler HTTP APIThe Mesos Scheduler HTTP API at /api/v1/scheduler enables framework schedulers to subscribe to resource off...27.8 UKG Ready REST APIRESTful API for UKG Ready providing programmatic access to employees, HR records, payroll, time and attenda...27.8

Emerging 32 Early or largely undocumented

Uber Freight Scheduling APIScheduling API implementing the Scheduling Standards Consortium (SSC) Technical Standard for automated dock...25.0 UKG Pro WFM APIREST API for the UKG Pro Workforce Management product (Dimensions), covering punches, shifts, scheduling, a...24.8 J.B. Hunt Transport Services Scheduling APIManage pickup and delivery appointments.24.7 Kyo Attain Platform APIThe Attain platform API is the backend serving the Kyo Care portal (portal.kyocare.com) and the Kyo Care mo...24.6 Web Summit Attendee PlatformThe Web Summit attendee platform provides conference scheduling, attendee discovery, and networking capabil...24.2 AutoLeap Appointments APICreate and bulk-update scheduled appointments, plus a separate appointment-requests flow (create requests, ...23.2 Glofox Classes & Events APIScheduled Events - classes, appointments, and facility slots - with capacity and attendance tracking that m...23.2 Deputy Public APIREST API for managing employees, schedules, timesheets, locations, leave, tasks, and sales metrics in the D...22.8 Webex Meetings APISchedule, list, update, and cancel Webex meetings; manage participants, recordings, transcripts, and meetin...22.8 Revel Systems Scheduling APILabor scheduling and timesheet resources.22.3 Moodle Task APIExecutes background jobs on a schedule or as one-off operations, allowing plugins to defer long-running wor...22.1 Dentrix Appointments & Scheduling APIRead the schedule and book, reschedule, or cancel appointments. In the Dentrix Developer Program this maps ...20.2 Gem SchedulingInterview scheduling product that coordinates candidate and interviewer calendars and integrates with CodeS...19.4 HireVue Coordinate (Scheduling) APIAutomated interview scheduling and coordination across candidate and interviewer calendars. Supports self-s...18.9 Fieldpoint REST API (FPDTS)The Fieldpoint Data Transfer Service (FPDTS) is Fieldpoint's open REST API that enables data exchange betwe...18.7 Shiftsmart Platform APIThe private REST API backing the Shiftsmart worker and manager applications. Probing confirms a live Feathe...18.7 CareRev Platform APIThe private application and partner-integration API behind the CareRev platform. api.carerev.com is a live,...17.9 Findem Scheduling AgentAgentic worker that coordinates interview scheduling across candidate and interviewer calendars.17.8 Process Management APISystem calls for process creation, execution, termination, and control.17.5 ConstructionOnline REST APIREST API for the ConstructionOnline platform that lets approved Business and Enterprise customers programma...17.0 FieldEdge Dispatch & Scheduling APIRead and manage appointments on the dispatch board - assigning jobs to technicians and viewing scheduled wo...16.1 Omnitracs Web Services (Roadnet Platform)Integration web services for the Omnitracs Roadnet routing and dispatch platform (route planning and optimi...16.1 SimplePractice Enterprise Scheduling APIPartner-only integration announced by SimplePractice Enterprise (September 2022) that connects to overlappi...15.5 Denticon Appointments APIRead appointments on the schedule, query open scheduling availability, and book, confirm, reschedule, or ca...14.2 TherapyNotes Scheduling API (Modeled)Modeled capability area for appointments, recurring schedules, and reminders. TherapyNotes offers native on...14.1 Karmada Multi-Cluster APIKarmada extends the Kubernetes API with custom resources for multi-cluster management including Propagation...13.9 ShiftMed Workforce APIShiftMed markets an API that lets a hospital, health system or post-acute facility tap its network of crede...13.6 KoordinatorKoordinator QoS-based scheduling system for hybrid workloads on Kubernetes with colocation and resource opt...13.3 Solv Booking Widget APIInteroperable API that powers a custom, white-labeled digital patient-booking experience embedded on a heal...12.5 Mend Appointments and Scheduling APILogical grouping for creating and managing appointments, provider availability, patient self-scheduling, re...11.9 LEAP Calendar APIModeled calendar/diary and appointment-scheduling surface, evidenced by production Marketplace scheduling i...11.2 tab32 Schedule APIAccess to the tab32 schedule data object - appointments, availability, and booking - supporting online book...11.1

Minimal 3 Almost no public developer surface

Phreesia Scheduling & Appointments APIAppointment scheduling, reminders, and contactless mobile/kiosk check-in, driving arrival status back into ...9.2 Clearwave Scheduling APIOnline and self-service appointment scheduling where every booking, cancellation, and reschedule syncs auto...6.7 Examity Appointments (Scheduling) APICreate, reschedule, and cancel proctoring appointments for a test-taker against a registered exam, and quer...4.0

Companies reaching this through an API (88)

These companies publish an API, specification or operation carrying “Scheduling” but do not classify their business under it. Listed unranked and kept out of the count above, because one tagged operation is not a statement about what a company does.

75F AAR Corp Accruent ADP Allscripts Alteryx APIs.io Engineering Platform Aramark athenahealth AutoLeap Boulevard Cambio Healthcare Systems Capella Space Celery Chalmers University of Technology Cisco Collaboration Hybrid Solutions Cisco Webex Meetings Clockify Cloudera Cornell University Crunchtime Denticon Dentrix Deputy eClinicalWorks Everbridge Examity FieldEdge Findem Fountain Gem Glofox Google Workspace Harver HashiCorp IESO IFS Indeed J.B. Hunt Transport Services LEAP Lever Microsoft Dynamics 365 Microsoft Exchange Microsoft Office 365 MISO Modal Moodle NationGraph Norwegian University of Science and Technology Omnitracs

Show all 88 companies ↓

OpenShift OptiSigns Oracle Enterprise Manager Paradox Paylocity PJM Interconnection Postman Qlik QlikView Revel Systems Salesforce Salesforce Marketing Cloud Sanity SAP BI Tools ScreenCloud Smartlead SmartRecruiters Solv Health Spring Boot 3 tab32 Tebra TherapyNotes ThingSpeak Treasure Data Uber Freight UKG Pro UKG Ready University of Reading UNIX System Call VATSIM Web Summit WellSky Workable Workday Integration Xpansiv Zoho Zoom Zype

Score breakdown

Frequency

70.4

log-scaled weighted occurrences

Breadth

6.0

spread across providers

Quality lift

34.5

mean composite of providers using it

Cohesion

11.1

strength of nearest seed neighbor

Where this tag comes from

Provider tag219

Api tag148

Openapi tag17

Openapi op tag50

Cohort brief

Auto-generated

The 206 providers in the APIs.io catalog tagged Scheduling, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.

Providers

206

all scored

Mean Kin Score

31.2

+7.3 vs catalog 23.9

Mean Agent Readiness

16.5

+4.5 vs catalog 12

Spread

3.3–83.7

median 31.2 · σ 17.6

How the 206 split by band

Exemplar 4Strong 17Developing 51Thin 47Emerging 59Minimal 28

Facet averages, against the whole catalog

Facet	This cohort	Catalog	Difference	Scored
Access Clarity	39	26.5	+12.5	206
Contract Quality	28.5	19.8	+8.7	206
Operational Transparency	21.7	13.9	+7.8	206
Developer Ergonomics	27.7	23.4	+4.3	206
Discoverability	64	61.2	+2.8	206
Contract Governance	6.6	6.4	+0.2	206

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)	9%	10%	-1
MCP server (first-party)	13%	13%	0
Agent Skills	0%	0%	0
OAuth scopes	19%	11%	+8
Security	98%	96%	+2
Arazzo workflows	3%	2%	+1
Governance rules	17%	14%	+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 Elation Health 83.7
2 Nylas 76.6
3 ZnanyLekarz 71.2
4 Healthie 68.2
5 Spruce Health 64.9
6 Zocdoc 64.3
7 Mindbody 64.2
8 Weave 64.1
9 Buffer 63.2
10 Chili Piper 63.1

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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.

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Call it yourself

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All tags

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As a scored cohort

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

The distribution (Pro)

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

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Scheduling

Providers using this tag (217)

APIs with this tag (144)