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 14 Complete, well-documented, and agent-ready

Elation Scheduling APIManage appointments, appointment types, and provider schedules for a practice via the Elation API v2.0.84.1 Automation Studio APIAPI for initiating and managing marketing automations, including file upload, download, decryption, compres...83.5 Salesforce Field Service APIThe Salesforce Field Service API provides access to Field Service Lightning data and operations including w...83.3 Salesforce Scheduling APIThe Scheduling API from Salesforce — 1 operation(s) for scheduling.83.3 athenaOne APIsThe athenaOne proprietary REST API suite provides over 800 endpoints covering patient management, schedulin...79.2 Treasure Workflow APITreasure Workflow — the Digdag-based orchestration API. 43 operations over projects, workflow definitions, ...76.7 Nylas APIThe Nylas v3 REST API provides programmatic access to email, calendar, contacts, meeting notetaking, schedu...76.2 Nylas Scheduling APIScheduler. Booking configurations, scheduling sessions, availability lookups and booking lifecycle manageme...76.2 Optimizely Flags Scheduling APISchedule future flag ruleset changes and read environment change-approval settings. Five operations. Harves...75.1 eClinicalWorks FHIR APIProvider-centric, backend and bulk FHIR R4 APIs for integrating with the eClinicalWorks EHR. Supports SMART...74.9 healow Patient-Centric FHIR APIPatient-facing FHIR R4 APIs accessible through the healow developer portal, letting third-party application...74.9 Postiz Public APIThe complete, provider-published Postiz Public API — 23 operations across integrations (channels), groups, ...69.4 Healthie GraphQL APIThe Healthie GraphQL API is the single contract behind the entire Healthie platform — the same API that pow...68.5 Vim Appointments APIREST endpoint returning future appointment data (a 10-day lookahead) for a Vim organization. OAuth 2.0 clie...68.2

Strong 20 Solid coverage with minor gaps

SAP Emarsys Auto-import Profiles APIIn this batch you may find endpoints related to auto-import profiles. Published by SAP Emarsys as a Swagger...66.4 Chili Piper MCP ServerOfficial hosted remote MCP server for Chili Piper, served over streamable HTTP at https://fire.chilipiper.c...65.5 Weave Scheduling APIAppointments, appointment types, schedules, and calendar events.65.5 Postman Monitors APIThe Monitors API runs Postman Collections on a recurring schedule to validate API health, performance, and ...64.5 Buffer APIGraphQL API for scheduling and publishing posts, managing social media channels, handling content ideas and...64.3 Smartlead Campaigns APIREST endpoints to create, list, fetch, update, schedule, pause, resume, and delete email campaigns, plus ma...63.6 Hootsuite REST APIThe Hootsuite platform REST API — 48 operations covering OAuth 2.0 authentication, the authenticated member...63.3 Vendasta Meetings APIMeetings (CalendarHero) API for creating meetings, adding contacts, messaging and searching. Scope-gated wi...63.3 Connecteam APIThe Connecteam public REST API. 145 operations across users, admins, smart groups and custom fields; time c...63.2 ThingSpeak TimeControl APICron-style scheduler that fires ThingHTTP, TalkBack, or MATLAB Analysis actions at a chosen time, recurring...62.7 Tebra Appointments APISOAP operations for scheduling - GetAppointment, GetAppointments, CreateAppointment, UpdateAppointment, Upd...62.2 Jane Appointments APIRetrieve and list one-on-one appointment bookings for a clinic, with filtering by patient, staff member, lo...61.0 Jane Practice and Scheduling APIRead clinic reference and scheduling data — locations, staff members, disciplines, treatments, and company ...61.0 AdvancedMD Connect APIsAdvancedMD's proprietary partner API family, published in both XML-RPC and REST formats, which lets develop...58.3 Microsoft Exchange Scheduling APIOperations for scheduling and free/busy information57.2 Jobs APICreate, manage, and run jobs on Databricks clusters including scheduling, listing runs, and managing job pe...56.5 Assembled Activities APICreate, list, and delete activities — the scheduled shifts, breaks, time off, training, and meetings that m...55.6 Microsoft Bookings APIManage customer bookings, appointment scheduling, business services, and staff information for enterprise a...54.8 Enterprise Manager Blackout Management APIREST API for managing blackouts (maintenance windows) in Enterprise Manager, including creating, editing, d...54.6 Enterprise Manager Job System APIAPI for creating, managing, and monitoring Enterprise Manager jobs and tasks including scheduling, executio...54.6

Developing 38 Usable, with meaningful gaps to close

MISO CROW API (Outage Scheduling)The outage-scheduling interface, built on the CROW product, documented in a PDF reference plus a MISO-speci...54.0 Sanity Scheduling APIThe Sanity Scheduling API enables scheduling content for future publication or unpublication at specific ti...52.8 Veradigm Unity APIThe Veradigm Unity API exposes clinical, scheduling, demographic, and practice management functions across ...52.3 Semble Scheduling & Bookings APIGraphQL surface for appointments and scheduling — bookings, bookings-by-id, availabilities, availability ru...52.2 DexCare Care Options APIAggregated in-person and virtual appointment discovery across a health system, returning available provider...52.1 DexCare REST APIRESTful service for accessing business information and performing actions against DexCare-managed healthcar...52.1 DexCare Slots Availability APIProvider- and department-level appointment slot search, addressed by National Provider Identifier, plus the...52.1 DexCare Visit Booking APIBooks an in-person appointment for a queued guest visit once a timeslot has been selected. OpenAPI 3.0.3, v...52.1 DexCare Visit Service APICreate and follow on-demand virtual visits, and read regional virtual-care availability and estimated wait ...52.1 PJM InSchedule Browserless APIThe browserless REST interface to PJM InSchedule, the eTool market participants use to submit and retrieve ...52.1 Arthur Viewings APIProperty and unit viewing appointments, the applicants attached to each viewing, assigned managers, convers...51.8 Zoom Calendar APIThe Zoom Calendar API enables developers to manage calendar events, automate scheduling, sync across platfo...51.1 Zoom Workforce Management APIThe Zoom Workforce Management API enables developers to build applications that manage workforce scheduling...51.1 Booksy Public APIThe Booksy Public API is a partner-facing REST API for managing Booksy businesses and their booking data. I...50.7 IESO Outage Coordination and Scheduling System (OCSS) Web ServiceA web service, specified in SPEC-113, for submitting and managing transmission and generation outage reques...50.4 SAP BI Tools Scheduling APISchedule reports and documents for execution with configurable parameters, recurrence, and destination opti...49.9 SAP BusinessObjects BI Platform RESTful Web ServicesREST API for SAP BusinessObjects BI Platform for managing documents, users, and scheduling reports.49.9 Skedulo scheduling APIThe scheduling API from Skedulo — 7 operation(s) for scheduling.49.9 Luma Health Scheduling & Appointments APISelf-service scheduling, appointment lifecycle, appointment types, provider availabilities, schedulers, off...48.9 Paradox Scheduling APIManage interview scheduling, interviewers, settings, rooms, alerts, and history48.3 Google Calendar APICreate and manage calendars, events, and attendees.47.5 IntelyCare External Scheduling APIREST API for integrating a facility's scheduling, EHR or workforce system with the IntelyCare Staffing plat...47.3 Workday Integration Scheduling APIThe Scheduling API from Workday Integration — 2 operation(s) for scheduling.46.8 NationGraph Scheduling APIThe Scheduling API from NationGraph — 3 operation(s) for scheduling.46.4 Oracle Primavera Analytics APIOracle Primavera Analytics provides reporting and business intelligence APIs for portfolio performance insi...45.7 Oracle Primavera Gateway Integration APIOracle Primavera Gateway provides integration APIs for connecting Primavera P6 with other Oracle and third-...45.7 Oracle Primavera P6 Scheduling APIOracle Primavera P6 provides project scheduling and portfolio management APIs for construction, engineering...45.7 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 Alteryx Server APIREST API for managing workflows, schedules, and jobs on Alteryx Server. Provides Subscription, User V2, Adm...43.9 Dynamics 365 Field Service APIAPI for managing field service operations including work orders, scheduling, resource availability, and wor...43.0 Indeed Interview APIA GraphQL API for scheduling, updating, retrieving information about, and canceling virtual interview event...42.7 Pharmacy Unified API - Booking ServiceAppointment and clinical-service booking operations within the Pharmacy Unified API - listing available pha...42.6 Harver scheduling APIThe scheduling API from Harver — 2 operation(s) for scheduling.40.7 Calendly Embed APIThe Calendly Embed API allows developers to integrate Calendly scheduling pages directly into their website...40.6 Calendly Webhook APIThe Calendly Webhook API enables developers to receive real-time notifications when scheduling events occur...40.6 Capella Space Tasking APIThe Capella Tasking API lets customers submit imagery tasking requests against the Capella SAR constellatio...40.4 OpenShift Schedule and Quota APIAPI for managing scheduling and quota resources including ResourceQuota, LimitRange, PriorityClass, and Clu...40.2 AlayaCare Scheduler APIREST API for accessing and managing visit scheduling data, including visit details, facility information, a...39.7

Thin 39 Limited public surface area

Koppla APIkoppla advertises an "Offene Schnittstelle / API" (open interface / API) as an included capability of its E...39.0 Zoho BookingsThe Zoho Bookings API allows developers to integrate online scheduling and appointment management with thir...38.5 Zoho CalendarThe Zoho Calendar API provides REST endpoints to customize calendar features, allowing you to manage calend...38.5 Workable Events APIThe Events API from Workable — 2 operation(s) for events.38.3 Zoca Platform APIThe Zoca platform API — the backend the Zoca web application and the iOS/Android apps call. 1,413 paths and...38.2 Fountain Scheduling APIManage interview / calendar slots and bookings.37.6 Webex Meetings APIThe Webex Meetings API enables scheduling, updating, deleting, and listing of Webex meetings. Endpoints sup...37.4 Sesame HR Scheduling APIPlanners, shifts, and schedule templates.37.1 Purplebricks Viewings APIViewing and appointment service: appointments, open days, property access details, per-property and per-use...36.9 Lever Interviews APIThe Interviews API from Lever — 2 operation(s) for interviews.36.7 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 TP Timetable Web ServiceTP (Timeplan) is the timetable, room-booking and course-activity system used by NTNU and hosted at tp.educl...36.4 Crunchtime Inventory & Labor APIThe Crunchtime Inventory & Labor API is a REST/JSON web-services API for integrating restaurant back-office...36.1 SmartRecruiters Interview APIThe Interview API provides self-scheduling capabilities and interview template management for streamlining ...35.1 IFS Field Service Management APIIFS Field Service Management APIs enable work order management, scheduling optimization, technician dispatc...34.9 Planday APIPlanday's REST API secured by OAuth2 bearer tokens, separated into domains (HR, Absence, Pay, Payroll, Port...34.9 Cornell Class Roster APIPublic, read-only API (version 2.0) for Cornell Class Roster data: scheduled classes with Course of Study d...34.7 OptiSigns Schedules APICreate and manage schedules that control when assets and playlists play on which devices across dates, time...34.0 Modal Cron and Scheduled FunctionsRun functions on a recurring schedule using modal.Period or modal.Cron passed to @app.function(schedule=......33.3 ScreenCloud Studio Playlists APIGraphQL operations for building and maintaining playlists - the ordered sequences of content shown on scree...33.0 Jifflenow REST APIThe Jifflenow REST API exposes the meeting-automation core of Cvent Jifflenow as JSON over HTTPS. Documente...32.9 YARN Queue Manager APIYARN Queue Manager exposes a REST API for managing capacity scheduler queues, ACLs, and resource allocation...32.4 VATSIM Events APIThe Events API from VATSIM — 2 operation(s) for events.32.1 UKG Scheduling APIShifts, schedules, and schedule management31.9 Spring Boot 3 Scheduling APIScheduled task inspection31.6 Clockify Scheduling APIThe Scheduling API from Clockify — 10 operation(s) for scheduling.31.1 Sendible APIREST API for managing social media clients, scheduling posts, monitoring mentions, and accessing analytics ...30.7 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 Homebase APIThe Homebase REST API provides programmatic access to employee scheduling, time tracking, payroll synchroni...29.2 EasyCronEasyCron is used to run automated tasks, making API calls on a variety of schedules, using all of the APIs ...29.1 UKG Ready REST APIRESTful API for UKG Ready providing programmatic access to employees, HR records, payroll, time and attenda...29.1 Vetspire Schedule & Appointments APIGraphQL operations over the Schedule domain - list appointments for a location and date range, read provide...28.9 Zcal Scheduling LinksUnlimited shareable scheduling links, meeting polls, and customizable booking pages let invitees self-serve...28.6 HashiCorp NomadA simple and flexible scheduler and orchestrator to deploy and manage containers and non-containerized appl...28.5 Paylocity Scheduling APIThe Scheduling API from Paylocity — 3 operation(s) for scheduling.28.2 QlikView Distribution Service API (IQDS)API interface for the QlikView Distribution Service, providing programmatic access to document distribution...27.7 Apache Mesos Scheduler HTTP APIThe Mesos Scheduler HTTP API at /api/v1/scheduler enables framework schedulers to subscribe to resource off...27.2

Emerging 39 Early or largely undocumented

Boulevard Admin API - Appointments, Staff & LocationsRead and sync appointment, staff, and location data across a business's calendar - past, current, and futur...26.1 Kyo Attain Platform APIThe Attain platform API is the backend serving the Kyo Care portal (portal.kyocare.com) and the Kyo Care mo...25.7 ADP Time and Labor APIThe ADP Time and Labor API enables integration with ADP's timekeeping system for time entries, schedules, t...25.4 Apache DolphinScheduler REST APIThe DolphinScheduler REST API enables programmatic management of projects, workflow definitions (DAGs), wor...25.4 UKG Pro WFM APIREST API for the UKG Pro Workforce Management product (Dimensions), covering punches, shifts, scheduling, a...24.6 J.B. Hunt Transport Services Scheduling APIManage pickup and delivery appointments.24.3 Deputy Public APIREST API for managing employees, schedules, timesheets, locations, leave, tasks, and sales metrics in the D...22.8 WellSky Personal Care Connect APIFHIR-compliant API for WellSky Personal Care software platform enabling data integration and interoperabili...22.8 Cal.com REST API v2REST API providing full programmatic control over Cal.com resources including calendars, event types, booki...22.7 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 AutoLeap Appointments APICreate and bulk-update scheduled appointments, plus a separate appointment-requests flow (create requests, ...21.8 Glofox Classes & Events APIScheduled Events - classes, appointments, and facility slots - with capacity and attendance tracking that m...21.8 Web Summit Attendee PlatformThe Web Summit attendee platform provides conference scheduling, attendee discovery, and networking capabil...21.6 Uber Freight Scheduling APIScheduling API implementing the Scheduling Standards Consortium (SSC) Technical Standard for automated dock...21.3 Dentrix Appointments & Scheduling APIRead the schedule and book, reschedule, or cancel appointments. In the Dentrix Developer Program this maps ...20.2 Celery Beat APICelery Beat is the scheduler for periodic tasks, supporting crontab-style schedules, interval schedules, an...19.6 Gem SchedulingInterview scheduling product that coordinates candidate and interviewer calendars and integrates with CodeS...19.4 Webex Meetings APISchedule, list, update, and cancel Webex meetings; manage participants, recordings, transcripts, and meetin...19.3 Fountain Worker APIPost-hire REST API covering worker profiles (activation and deactivation), employment records, document sub...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 HireVue Coordinate (Scheduling) APIAutomated interview scheduling and coordination across candidate and interviewer calendars. Supports self-s...18.0 Paradox Conversational SchedulingAutomated interview scheduling across candidate and interviewer calendars, including rescheduling and remin...18.0 CareRev Platform APIThe private application and partner-integration API behind the CareRev platform. api.carerev.com is a live,...16.1 FieldEdge Dispatch & Scheduling APIRead and manage appointments on the dispatch board - assigning jobs to technicians and viewing scheduled wo...16.1 Findem Scheduling AgentAgentic worker that coordinates interview scheduling across candidate and interviewer calendars.15.9 Process Management APISystem calls for process creation, execution, termination, and control.15.8 SimplePractice Enterprise Scheduling APIPartner-only integration announced by SimplePractice Enterprise (September 2022) that connects to overlappi...15.5 Omnitracs Web Services (Roadnet Platform)Integration web services for the Omnitracs Roadnet routing and dispatch platform (route planning and optimi...14.7 ShiftMed Workforce APIShiftMed markets an API that lets a hospital, health system or post-acute facility tap its network of crede...14.7 Shiftsmart Platform APIThe private REST API backing the Shiftsmart worker and manager applications. Probing confirms a live Feathe...14.1 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 ConstructionOnline REST APIREST API for the ConstructionOnline platform that lets approved Business and Enterprise customers programma...13.6 Denticon Appointments APIRead appointments on the schedule, query open scheduling availability, and book, confirm, reschedule, or ca...12.8 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 4 Almost no public developer surface

KoordinatorKoordinator QoS-based scheduling system for hybrid workloads on Kubernetes with colocation and resource opt...10.9 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

Score breakdown

Frequency

71.1

log-scaled weighted occurrences

Breadth

8.4

spread across providers

Quality lift

39.2

mean composite of providers using it

Cohesion

11.3

strength of nearest seed neighbor

Where this tag comes from

Provider tag219

Api tag155

Openapi tag18

Openapi op tag63

Cohort brief

Auto-generated

The 308 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

308

all scored

Mean Kin Score

32.4

+11.7 vs catalog 20.7

Mean Agent Readiness

16.8

+7.1 vs catalog 9.7

Spread

0.1–84.1

median 32.2 · σ 18.7

How the 308 split by band

Exemplar 12Strong 26Developing 64Thin 81Emerging 87Minimal 38

Facet averages, against the whole catalog

Facet	This cohort	Catalog	Difference	Scored
Access Clarity	38.2	22.3	+15.9	308
Contract Quality	31.7	17.5	+14.2	308
Operational Transparency	22.6	11.3	+11.3	308
Developer Ergonomics	26.9	17.9	+9	308
Discoverability	68	60.4	+7.6	308
Contract Governance	9.6	6.4	+3.2	308

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)	23%	16%	+7
MCP server (first-party)	8%	7%	+1
Agent Skills	0%	0%	0
OAuth scopes	22%	9%	+13
Security	96%	88%	+8
Arazzo workflows	6%	2%	+4
Governance rules	22%	13%	+9

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 84.1
2 Salesforce Marketing Cloud 83.5
3 Salesforce 83.3
4 athenahealth 79.2
5 Treasure Data 76.7
6 Nylas 76.2
7 Optimizely 75.1
8 eClinicalWorks 74.9
9 Zocdoc 69.7
10 Postiz 69.4

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Tools for tags

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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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This tag

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

All tags

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

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 (308)

APIs with this tag (154)