Google Calendar

The Google Calendar API provides RESTful access to Google Calendar data, enabling applications to create, view, and manage calendar events, access control lists, and user settings. It supports creating and managing multiple calendars, querying free/busy information, setting up push notifications for changes, and integrating calendar functionality into third-party applications.

Google Calendar publishes 4 APIs on the APIs.io network, including Calendars API, Colors API, freeBusy API, and 1 more. Tagged areas include Availability, Calendar, Events, Google, and Google Workspace.

The Google Calendar catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

Google Calendar’s developer surface includes developer portal, getting-started guide, documentation, authentication, pricing, support, engineering blog, and 9 more developer resources.

🌐 Visit website 📡 Source on GitHub

60.9/100 strong ▬ flat Agent 31/100 agent aware Full breakdown ↓
scored 2026-07-28 · rubric v0.6

AccessFreemium

4 APIs

AvailabilityCalendarEventsGoogleGoogle WorkspaceScheduling

Kin Score

Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6

Composite quality — 60.9/100 · strong

Contract Quality 15.5 / 25

Developer Ergonomics 10.0 / 20

Commercial Clarity 14.2 / 20

Operational Transparency 6.8 / 13

Governance 7.0 / 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/google-calendar: 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 4

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

Rate Limits 1

Documented rate limits and quota policies.

Google Calendar Rate Limits

5 limits

RATE LIMITS

FinOps 1

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

Get Started 2

Portal, sign-up, and the first successful call

Portal

Portal

GettingStarted

GettingStarted

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Design & Contract 1

Pagination, idempotency, versioning, errors, and events

JSONLD

JSONLD

Build 2

SDKs, sample code, and the tooling you integrate with

PostmanWorkspace

PostmanWorkspace

GitHubOrganization

GitHubOrganization

Access & Security 3

Authentication, authorization, and security posture

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 2

Status, limits, changes, and where to get help

StatusPage

StatusPage

Support

Support

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 1

The organization behind the API

Blog

Blog

Source (apis.yml)

aid: google-calendar
name: Google Calendar
description: The Google Calendar API provides RESTful access to Google Calendar data, enabling applications to create, view,
  and manage calendar events, access control lists, and user settings. It supports creating and managing multiple calendars,
  querying free/busy information, setting up push notifications for changes, and integrating calendar functionality into third-party
  applications.
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: medium
  source:
  - plans
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/google-calendar.png
url: https://raw.githubusercontent.com/api-evangelist/google-calendar/refs/heads/main/apis.yml
created: '2026-03-13'
modified: '2026-05-19'
specificationVersion: '0.19'
type: Index
tags:
- Availability
- Calendar
- Events
- Google
- Google Workspace
- Scheduling
apis:
- aid: google-calendar:google-calendar-calendars-api
  name: Google Calendar Calendars API
  description: The Calendars API from Google Calendar — 6 operation(s) for calendars.
  humanURL: https://developers.google.com/workspace/calendar/api/guides/overview
  baseURL: https://www.googleapis.com/calendar/v3
  tags:
  - Calendars
  properties:
  - type: OpenAPI
    url: openapi/google-calendar-calendars-api-openapi.yml
  - type: Documentation
    url: https://developers.google.com/workspace/calendar/api/guides/overview
  - type: Authentication
    url: https://developers.google.com/workspace/calendar/api/auth
  - type: GettingStarted
    url: https://developers.google.com/workspace/calendar/api/quickstart/python
  - type: JSONSchema
    url: json-schema/json-schema.yml
  - type: JSONLD
    url: json-ld/json-ld.jsonld
- aid: google-calendar:google-calendar-colors-api
  name: Google Calendar Colors API
  description: The Colors API from Google Calendar — 1 operation(s) for colors.
  humanURL: https://developers.google.com/workspace/calendar/api/guides/overview
  baseURL: https://www.googleapis.com/calendar/v3
  tags:
  - Colors
  properties:
  - type: OpenAPI
    url: openapi/google-calendar-colors-api-openapi.yml
  - type: Documentation
    url: https://developers.google.com/workspace/calendar/api/guides/overview
  - type: Authentication
    url: https://developers.google.com/workspace/calendar/api/auth
  - type: GettingStarted
    url: https://developers.google.com/workspace/calendar/api/quickstart/python
  - type: JSONSchema
    url: json-schema/json-schema.yml
  - type: JSONLD
    url: json-ld/json-ld.jsonld
- aid: google-calendar:google-calendar-freebusy-api
  name: Google Calendar freeBusy API
  description: The freeBusy API from Google Calendar — 1 operation(s) for freebusy.
  humanURL: https://developers.google.com/workspace/calendar/api/guides/overview
  baseURL: https://www.googleapis.com/calendar/v3
  tags:
  - freeBusy
  properties:
  - type: OpenAPI
    url: openapi/google-calendar-freebusy-api-openapi.yml
  - type: Documentation
    url: https://developers.google.com/workspace/calendar/api/guides/overview
  - type: Authentication
    url: https://developers.google.com/workspace/calendar/api/auth
  - type: GettingStarted
    url: https://developers.google.com/workspace/calendar/api/quickstart/python
  - type: JSONSchema
    url: json-schema/json-schema.yml
  - type: JSONLD
    url: json-ld/json-ld.jsonld
- aid: google-calendar:google-calendar-users-api
  name: Google Calendar Users API
  description: The Users API from Google Calendar — 2 operation(s) for users.
  humanURL: https://developers.google.com/workspace/calendar/api/guides/overview
  baseURL: https://www.googleapis.com/calendar/v3
  tags:
  - Users
  properties:
  - type: OpenAPI
    url: openapi/google-calendar-users-api-openapi.yml
  - type: Documentation
    url: https://developers.google.com/workspace/calendar/api/guides/overview
  - type: Authentication
    url: https://developers.google.com/workspace/calendar/api/auth
  - type: GettingStarted
    url: https://developers.google.com/workspace/calendar/api/quickstart/python
  - type: JSONSchema
    url: json-schema/json-schema.yml
  - type: JSONLD
    url: json-ld/json-ld.jsonld
common:
- type: PostmanWorkspace
  url: https://www.postman.com/kinlaneapi/google-calendar/overview
- type: AgenticAccess
  url: agentic-access/google-calendar-agentic-access.yml
- type: VulnerabilityDisclosure
  url: security/google-calendar-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/google-calendar-domain-security.yml
- type: GitHubOrganization
  url: https://github.com/googleworkspace
- type: Portal
  url: https://developers.google.com/workspace/calendar
- type: GettingStarted
  url: https://developers.google.com/workspace/calendar/api/guides/overview
- type: Documentation
  url: https://developers.google.com/workspace/calendar/api/reference/rest
- type: Authentication
  url: https://developers.google.com/identity/protocols/oauth2
- type: Pricing
  url: https://developers.google.com/workspace/calendar/api/guides/quota
- type: TermsOfService
  url: https://developers.google.com/terms
- type: PrivacyPolicy
  url: https://policies.google.com/privacy
- type: StatusPage
  url: https://www.google.com/appsstatus/dashboard/
- type: Support
  url: https://developers.google.com/workspace/calendar/api/support
- type: Blog
  url: https://workspaceupdates.googleblog.com/
- type: JSONLD
  url: json-ld/json-ld.jsonld
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

Google Calendar

Kin Score

APIs 4

Google Calendar Calendars API

Google Calendar Colors API

Google Calendar freeBusy API

Google Calendar Users API

Postman Collections 4

Google Calendar Calendars API

Google Calendar Calendars Colors API

Google Calendar Calendars freeBusy API

Google Calendar Calendars Users API

Open Collections 1

Google Calendar API

Pricing Plans 1

Google Calendar Plans Pricing

Rate Limits 1

Google Calendar Rate Limits

FinOps 1

Google Calendar Finops

Semantic Vocabularies 1

Json Ld Context

Spectral Rules 1

Google Calendar API Rules

Security Posture 2

Google Calendar Domain Security

Google Calendar Vulnerability Disclosure

Agentic Access 1

Google Calendar Agentic Access

Resources