Apple CloudKit

Apple CloudKit is the cloud backend for iOS, iPadOS, macOS, tvOS, watchOS, visionOS, and the web. CloudKit Web Services is the public REST surface that lets non-Apple-platform clients (web apps, servers) read and write data into a CloudKit container's public, private, or shared database. The web service is hosted at api.apple-cloudkit.com and accepts either an API token (for end-user-authenticated access) or a server-to- server ECDSA key for backend access. Operations cover records, zones, subscriptions, assets, users, and database changes.

Apple CloudKit publishes 7 APIs on the APIs.io network, including Assets API, Changes API, Records API, and 4 more. Tagged areas include Apple, Cloud Storage, CloudKit, Database, and iCloud.

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

Apple CloudKit’s developer surface includes authentication, documentation, developer console, and 7 more developer resources.

🌐 Visit website 📡 Source on GitHub

31.5/100 thin ▬ flat Agent 28/100 agent aware Full breakdown ↓
scored 2026-07-28 · rubric v0.6

AccessSelf serve

10 APIs

AppleCloud StorageCloudKitDatabaseiCloudMobileSyncWeb Services

Kin Score

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

Composite quality — 31.5/100 · thin

Contract Quality 14.4 / 25

Developer Ergonomics 5.2 / 20

Commercial Clarity 2.1 / 20

Operational Transparency 0.0 / 13

Governance 3.3 / 12

Discoverability 6.5 / 10

Agent readiness — 28/100 · 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 0 / 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/cloudkit: 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 10

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

Get Started 1

Portal, sign-up, and the first successful call

Console

Console

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 2

Pagination, idempotency, versioning, errors, and events

JSONLD

JSONLD

Spectral

Spectral

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Commercial 1

Pricing, plans, and the legal terms of use

PrivacyPolicy

PrivacyPolicy

Company 1

The organization behind the API

Website

Website

Other 1

Properties that don't map to a standard resource type

Developer

Developer

Source (apis.yml)

aid: cloudkit
name: Apple CloudKit
description: Apple CloudKit is the cloud backend for iOS, iPadOS, macOS, tvOS, watchOS, visionOS, and the web. CloudKit Web
  Services is the public REST surface that lets non-Apple-platform clients (web apps, servers) read and write data into a
  CloudKit container's public, private, or shared database. The web service is hosted at api.apple-cloudkit.com and accepts
  either an API token (for end-user-authenticated access) or a server-to- server ECDSA key for backend access. Operations
  cover records, zones, subscriptions, assets, users, and database changes.
type: Index
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/cloudkit.png
url: https://raw.githubusercontent.com/api-evangelist/cloudkit/refs/heads/main/apis.yml
created: '2024-01-01'
modified: '2026-04-25'
specificationVersion: '0.19'
kind: company
tags:
- Apple
- Cloud Storage
- CloudKit
- Database
- iCloud
- Mobile
- Sync
- Web Services
apis:
- aid: cloudkit:web-services
  name: CloudKit Web Services
  tags:
  - REST
  - Records
  - Zones
  - Subscriptions
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  baseURL: https://api.apple-cloudkit.com/database/1
  humanURL: https://developer.apple.com/library/archive/documentation/DataManagement/Conceptual/CloudKitWebServicesReference/index.html
  properties:
  - url: https://developer.apple.com/library/archive/documentation/DataManagement/Conceptual/CloudKitWebServicesReference/index.html
    type: Documentation
  - url: https://developer.apple.com/library/archive/documentation/DataManagement/Conceptual/CloudKitWebServicesReference/SettingUpWebServices.html
    type: Setup
  - url: https://developer.apple.com/documentation/cloudkit/obtaining-an-api-token-for-an-icloud-container
    type: API Tokens
  description: The CloudKit Web Services REST API is structured as /database/1/{container}/{environment}/{database}/{operation},
    where database is one of public, private, or shared and environment is development or production. Operations include records
    lookup, query, modify, delete, zone create/list/delete, subscription create/list/delete, asset upload, user info and changes.
    Calls are authenticated using an API token for user-authenticated access (with ckWebAuthToken) or a server-to-server ECDSA
    key for backend access.
- aid: cloudkit:js
  name: CloudKit JS
  tags:
  - JavaScript
  - SDK
  - Web
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://developer.apple.com/documentation/cloudkitjs
  properties:
  - url: https://developer.apple.com/documentation/cloudkitjs
    type: Documentation
  description: CloudKit JS is Apple's JavaScript SDK that wraps the CloudKit Web Services REST API for browser apps. It provides
    Sign in with Apple authentication, container/database/zone access, queries, record operations, subscriptions, and asset
    management.
- aid: cloudkit:framework
  name: CloudKit Framework
  tags:
  - SDK
  - Apple Platforms
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://developer.apple.com/documentation/cloudkit
  properties:
  - url: https://developer.apple.com/documentation/cloudkit
    type: Documentation
  description: The native CloudKit framework for iOS, iPadOS, macOS, tvOS, watchOS, and visionOS. Provides programmatic access
    to CloudKit containers, records, zones, subscriptions, and sharing. Out of band of the web services REST surface but shares
    the same data model.
- aid: cloudkit:cloudkit-assets-api
  name: Apple CloudKit Assets API
  description: The Assets API from Apple CloudKit — 2 operation(s) for assets.
  humanURL: https://developer.apple.com/library/archive/documentation/DataManagement/Conceptual/CloudKitWebServicesReference/index.html
  baseURL: https://api.apple-cloudkit.com/database/1
  tags:
  - Assets
  properties:
  - type: OpenAPI
    url: openapi/cloudkit-assets-api-openapi.yml
- aid: cloudkit:cloudkit-changes-api
  name: Apple CloudKit Changes API
  description: The Changes API from Apple CloudKit — 2 operation(s) for changes.
  humanURL: https://developer.apple.com/library/archive/documentation/DataManagement/Conceptual/CloudKitWebServicesReference/index.html
  baseURL: https://api.apple-cloudkit.com/database/1
  tags:
  - Changes
  properties:
  - type: OpenAPI
    url: openapi/cloudkit-changes-api-openapi.yml
- aid: cloudkit:cloudkit-records-api
  name: Apple CloudKit Records API
  description: The Records API from Apple CloudKit — 6 operation(s) for records.
  humanURL: https://developer.apple.com/library/archive/documentation/DataManagement/Conceptual/CloudKitWebServicesReference/index.html
  baseURL: https://api.apple-cloudkit.com/database/1
  tags:
  - Records
  properties:
  - type: OpenAPI
    url: openapi/cloudkit-records-api-openapi.yml
- aid: cloudkit:cloudkit-subscriptions-api
  name: Apple CloudKit Subscriptions API
  description: The Subscriptions API from Apple CloudKit — 3 operation(s) for subscriptions.
  humanURL: https://developer.apple.com/library/archive/documentation/DataManagement/Conceptual/CloudKitWebServicesReference/index.html
  baseURL: https://api.apple-cloudkit.com/database/1
  tags:
  - Subscriptions
  properties:
  - type: OpenAPI
    url: openapi/cloudkit-subscriptions-api-openapi.yml
- aid: cloudkit:cloudkit-tokens-api
  name: Apple CloudKit Tokens API
  description: The Tokens API from Apple CloudKit — 2 operation(s) for tokens.
  humanURL: https://developer.apple.com/library/archive/documentation/DataManagement/Conceptual/CloudKitWebServicesReference/index.html
  baseURL: https://api.apple-cloudkit.com/database/1
  tags:
  - Tokens
  properties:
  - type: OpenAPI
    url: openapi/cloudkit-tokens-api-openapi.yml
- aid: cloudkit:cloudkit-users-api
  name: Apple CloudKit Users API
  description: The Users API from Apple CloudKit — 4 operation(s) for users.
  humanURL: https://developer.apple.com/library/archive/documentation/DataManagement/Conceptual/CloudKitWebServicesReference/index.html
  baseURL: https://api.apple-cloudkit.com/database/1
  tags:
  - Users
  properties:
  - type: OpenAPI
    url: openapi/cloudkit-users-api-openapi.yml
- aid: cloudkit:cloudkit-zones-api
  name: Apple CloudKit Zones API
  description: The Zones API from Apple CloudKit — 4 operation(s) for zones.
  humanURL: https://developer.apple.com/library/archive/documentation/DataManagement/Conceptual/CloudKitWebServicesReference/index.html
  baseURL: https://api.apple-cloudkit.com/database/1
  tags:
  - Zones
  properties:
  - type: OpenAPI
    url: openapi/cloudkit-zones-api-openapi.yml
common:
- type: AgenticAccess
  url: agentic-access/cloudkit-agentic-access.yml
- type: DomainSecurity
  url: security/cloudkit-domain-security.yml
- type: Authentication
  url: authentication/cloudkit-authentication.yml
- type: Website
  url: https://www.icloud.com/
- type: Developer
  url: https://developer.apple.com/icloud/cloudkit/
- type: Documentation
  url: https://developer.apple.com/documentation/cloudkit
- type: Console
  url: https://icloud.developer.apple.com/dashboard/
- type: PrivacyPolicy
  url: https://www.apple.com/legal/privacy/
- type: JSONLD
  url: json-ld/cloudkit-context.jsonld
- type: Spectral
  url: rules/cloudkit-rules.yml
maintainers:
- FN: Kin Lane
  email: kinlane@gmail.com

Apple CloudKit

Kin Score

APIs 10

CloudKit Web Services

CloudKit JS

CloudKit Framework

Apple CloudKit Assets API

Apple CloudKit Changes API

Apple CloudKit Records API

Apple CloudKit Subscriptions API

Apple CloudKit Tokens API

Apple CloudKit Users API

Apple CloudKit Zones API

Open Collections 1

Apple CloudKit Web Services

Semantic Vocabularies 1

Cloudkit Context

Spectral Rules 1

Apple CloudKit API Rules

Security Posture 2

Cloudkit Authentication

Cloudkit Domain Security

Agentic Access 1

Cloudkit Agentic Access

Resources