Cronofy website screenshot

Cronofy

Cronofy is a scheduling and calendar API platform that provides a unified interface to Google Calendar, Microsoft 365 / Outlook, Exchange, and Apple iCloud. Its REST API powers two-way calendar sync, real-time availability and scheduling, smart invites, scheduling links, and push notifications for software teams embedding scheduling into their products.

Cronofy publishes 5 APIs on the APIs.io network, including Availability API, Calendars API, Events API, and 2 more. Tagged areas include Scheduling, Calendar, Availability, Booking, and Productivity.

Cronofy’s developer surface includes authentication, documentation, engineering blog, and 8 more developer resources.

🌐 Visit website 📡 Source on GitHub
38.1/100 thin ▬ flat Agent 31/100 agent aware Full breakdown ↓
scored 2026-07-28 · rubric v0.6
AccessPaidSelf serve
5 APIs
SchedulingCalendarAvailabilityBookingProductivity

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6
Composite quality — 38.1/100 · thin
Contract Quality 15.1 / 25
Developer Ergonomics 4.3 / 20
Commercial Clarity 7.9 / 20
Operational Transparency 3.4 / 13
Governance 0.0 / 12
Discoverability 7.4 / 10
Agent readiness — 31/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
MCP Server 0 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 0 / 4
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/cronofy: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 5

Individual APIs this provider publishes, each with its own machine-readable definition.

Cronofy Availability API

Availability queries and hosted real-time scheduling.

Cronofy Calendars API

Connected calendars, application calendars, and account identity.

Cronofy Events API

Reading, creating, updating, and deleting events plus free/busy.

Cronofy Push Notifications API

Notification channels for real-time calendar changes.

Cronofy Smart Invites API

Calendar invites tracked without calendar authorization.

Open Collections 1

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

Cronofy API

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Cronofy Plans Pricing

4 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Cronofy Rate Limits

2 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Cronofy Finops

FINOPS

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Cronofy Authentication

http · 1 scheme

SECURITY

Cronofy Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Cronofy Agentic Access

16 operations · 10 acting

16 operations · 10 acting

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation
Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity
 Authentication
Authentication

Operate 1

Status, limits, changes, and where to get help

RateLimits
RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans
Plans
 FinOps
FinOps

Company 3

The organization behind the API

LinkedIn
LinkedIn
 Website
Website
 Blog
Blog

Source (apis.yml)

apis.yml Raw ↑ 
aid: cronofy
url: https://raw.githubusercontent.com/api-evangelist/cronofy/refs/heads/main/apis.yml
name: Cronofy
kind: company
description: Cronofy is a scheduling and calendar API platform that provides a unified interface to Google Calendar, Microsoft
  365 / Outlook, Exchange, and Apple iCloud. Its REST API powers two-way calendar sync, real-time availability and scheduling,
  smart invites, scheduling links, and push notifications for software teams embedding scheduling into their products.
accessModel:
  pricing: paid
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Paid · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/cronofy.png
tags:
- Scheduling
- Calendar
- Availability
- Booking
- Productivity
created: '2026-06-21'
modified: '2026-06-21'
specificationVersion: '0.19'
apis:
- aid: cronofy:cronofy-availability-api
  name: Cronofy Availability API
  description: Availability queries and hosted real-time scheduling.
  humanURL: https://docs.cronofy.com/developers/api/calendars/
  baseURL: https://api.cronofy.com/v1
  tags:
  - Availability
  properties:
  - type: OpenAPI
    url: openapi/cronofy-availability-api-openapi.yml
  - type: Documentation
    url: https://docs.cronofy.com/developers/api/calendars/
  - type: APIReference
    url: https://docs.cronofy.com/developers/api/
  - type: PostmanCollection
    url: collections/cronofy.postman_collection.json
  - type: OpenCollection
    url: collections/cronofy.opencollection.json
  - type: Documentation
    url: https://docs.cronofy.com/developers/api/events/
  - type: APIReference
    url: https://docs.cronofy.com/developers/api/events/free-busy/
  - type: Documentation
    url: https://docs.cronofy.com/developers/api/scheduling/
  - type: APIReference
    url: https://docs.cronofy.com/developers/api/scheduling/availability/
  - type: Documentation
    url: https://docs.cronofy.com/developers/api/smart-invites/
  - type: APIReference
    url: https://docs.cronofy.com/developers/api/smart-invites/create-smart-invite/
  - type: Documentation
    url: https://docs.cronofy.com/developers/api/scheduling/real-time-scheduling/
  - type: APIReference
    url: https://docs.cronofy.com/developers/api/scheduling/
  - type: Documentation
    url: https://docs.cronofy.com/developers/api/push-notifications/
  - type: APIReference
    url: https://docs.cronofy.com/developers/api/push-notifications/create-channel/
- aid: cronofy:cronofy-calendars-api
  name: Cronofy Calendars API
  description: Connected calendars, application calendars, and account identity.
  humanURL: https://docs.cronofy.com/developers/api/calendars/
  baseURL: https://api.cronofy.com/v1
  tags:
  - Calendars
  properties:
  - type: OpenAPI
    url: openapi/cronofy-calendars-api-openapi.yml
  - type: Documentation
    url: https://docs.cronofy.com/developers/api/calendars/
  - type: APIReference
    url: https://docs.cronofy.com/developers/api/
  - type: PostmanCollection
    url: collections/cronofy.postman_collection.json
  - type: OpenCollection
    url: collections/cronofy.opencollection.json
  - type: Documentation
    url: https://docs.cronofy.com/developers/api/events/
  - type: APIReference
    url: https://docs.cronofy.com/developers/api/events/free-busy/
  - type: Documentation
    url: https://docs.cronofy.com/developers/api/scheduling/
  - type: APIReference
    url: https://docs.cronofy.com/developers/api/scheduling/availability/
  - type: Documentation
    url: https://docs.cronofy.com/developers/api/smart-invites/
  - type: APIReference
    url: https://docs.cronofy.com/developers/api/smart-invites/create-smart-invite/
  - type: Documentation
    url: https://docs.cronofy.com/developers/api/scheduling/real-time-scheduling/
  - type: APIReference
    url: https://docs.cronofy.com/developers/api/scheduling/
  - type: Documentation
    url: https://docs.cronofy.com/developers/api/push-notifications/
  - type: APIReference
    url: https://docs.cronofy.com/developers/api/push-notifications/create-channel/
- aid: cronofy:cronofy-events-api
  name: Cronofy Events API
  description: Reading, creating, updating, and deleting events plus free/busy.
  humanURL: https://docs.cronofy.com/developers/api/calendars/
  baseURL: https://api.cronofy.com/v1
  tags:
  - Events
  properties:
  - type: OpenAPI
    url: openapi/cronofy-events-api-openapi.yml
  - type: Documentation
    url: https://docs.cronofy.com/developers/api/calendars/
  - type: APIReference
    url: https://docs.cronofy.com/developers/api/
  - type: PostmanCollection
    url: collections/cronofy.postman_collection.json
  - type: OpenCollection
    url: collections/cronofy.opencollection.json
  - type: Documentation
    url: https://docs.cronofy.com/developers/api/events/
  - type: APIReference
    url: https://docs.cronofy.com/developers/api/events/free-busy/
  - type: Documentation
    url: https://docs.cronofy.com/developers/api/scheduling/
  - type: APIReference
    url: https://docs.cronofy.com/developers/api/scheduling/availability/
  - type: Documentation
    url: https://docs.cronofy.com/developers/api/smart-invites/
  - type: APIReference
    url: https://docs.cronofy.com/developers/api/smart-invites/create-smart-invite/
  - type: Documentation
    url: https://docs.cronofy.com/developers/api/scheduling/real-time-scheduling/
  - type: APIReference
    url: https://docs.cronofy.com/developers/api/scheduling/
  - type: Documentation
    url: https://docs.cronofy.com/developers/api/push-notifications/
  - type: APIReference
    url: https://docs.cronofy.com/developers/api/push-notifications/create-channel/
- aid: cronofy:cronofy-push-notifications-api
  name: Cronofy Push Notifications API
  description: Notification channels for real-time calendar changes.
  humanURL: https://docs.cronofy.com/developers/api/calendars/
  baseURL: https://api.cronofy.com/v1
  tags:
  - Push Notifications
  properties:
  - type: OpenAPI
    url: openapi/cronofy-push-notifications-api-openapi.yml
  - type: Documentation
    url: https://docs.cronofy.com/developers/api/calendars/
  - type: APIReference
    url: https://docs.cronofy.com/developers/api/
  - type: PostmanCollection
    url: collections/cronofy.postman_collection.json
  - type: OpenCollection
    url: collections/cronofy.opencollection.json
  - type: Documentation
    url: https://docs.cronofy.com/developers/api/events/
  - type: APIReference
    url: https://docs.cronofy.com/developers/api/events/free-busy/
  - type: Documentation
    url: https://docs.cronofy.com/developers/api/scheduling/
  - type: APIReference
    url: https://docs.cronofy.com/developers/api/scheduling/availability/
  - type: Documentation
    url: https://docs.cronofy.com/developers/api/smart-invites/
  - type: APIReference
    url: https://docs.cronofy.com/developers/api/smart-invites/create-smart-invite/
  - type: Documentation
    url: https://docs.cronofy.com/developers/api/scheduling/real-time-scheduling/
  - type: APIReference
    url: https://docs.cronofy.com/developers/api/scheduling/
  - type: Documentation
    url: https://docs.cronofy.com/developers/api/push-notifications/
  - type: APIReference
    url: https://docs.cronofy.com/developers/api/push-notifications/create-channel/
- aid: cronofy:cronofy-smart-invites-api
  name: Cronofy Smart Invites API
  description: Calendar invites tracked without calendar authorization.
  humanURL: https://docs.cronofy.com/developers/api/calendars/
  baseURL: https://api.cronofy.com/v1
  tags:
  - Smart Invites
  properties:
  - type: OpenAPI
    url: openapi/cronofy-smart-invites-api-openapi.yml
  - type: Documentation
    url: https://docs.cronofy.com/developers/api/calendars/
  - type: APIReference
    url: https://docs.cronofy.com/developers/api/
  - type: PostmanCollection
    url: collections/cronofy.postman_collection.json
  - type: OpenCollection
    url: collections/cronofy.opencollection.json
  - type: Documentation
    url: https://docs.cronofy.com/developers/api/events/
  - type: APIReference
    url: https://docs.cronofy.com/developers/api/events/free-busy/
  - type: Documentation
    url: https://docs.cronofy.com/developers/api/scheduling/
  - type: APIReference
    url: https://docs.cronofy.com/developers/api/scheduling/availability/
  - type: Documentation
    url: https://docs.cronofy.com/developers/api/smart-invites/
  - type: APIReference
    url: https://docs.cronofy.com/developers/api/smart-invites/create-smart-invite/
  - type: Documentation
    url: https://docs.cronofy.com/developers/api/scheduling/real-time-scheduling/
  - type: APIReference
    url: https://docs.cronofy.com/developers/api/scheduling/
  - type: Documentation
    url: https://docs.cronofy.com/developers/api/push-notifications/
  - type: APIReference
    url: https://docs.cronofy.com/developers/api/push-notifications/create-channel/
common:
- type: AgenticAccess
  url: agentic-access/cronofy-agentic-access.yml
- type: DomainSecurity
  url: security/cronofy-domain-security.yml
- type: Authentication
  url: authentication/cronofy-authentication.yml
- type: GitHubOrganization
  url: https://github.com/cronofy
- type: LinkedIn
  url: https://www.linkedin.com/company/cronofy
- type: Website
  url: https://www.cronofy.com
- type: Documentation
  url: https://docs.cronofy.com/developers/
- type: Plans
  url: plans/cronofy-plans-pricing.yml
- type: RateLimits
  url: rate-limits/cronofy-rate-limits.yml
- type: FinOps
  url: finops/cronofy-finops.yml
- url: https://www.cronofy.com/blog
  type: Blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com