# Apple CloudKit

**Canonical:** https://apis.io/providers/cloudkit/  
**Website:** https://www.icloud.com/  
**APIs profiled:** 10

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.

## Kin Score — 34.1 / 100 (thin)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 34.1).

| Facet | Score |
|---|---|
| Discoverability | 64.8 |
| Contract Quality | 53.1 |
| Governance | 54.5 |
| Contract Governance | 54.5 |
| Operational Transparency | 0.0 |
| Developer Ergonomics | 28.6 |
| Commercial Clarity | 10.5 |
| Access Clarity | 10.5 |

## Agent readiness — 26.1 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | yes |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | no |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Self-serve signup — onboarding: self-serve, pricing: unknown, trial: no (confidence: medium).

## APIs (10)

- **CloudKit Web Services** — 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 environ...
- **CloudKit JS** — 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 acce...
- **CloudKit Framework** — The native CloudKit framework for iOS, iPadOS, macOS, tvOS, watchOS, and visionOS. Provides programmatic access to CloudKit containers, records, zones, subscriptions, and sharin...
- **Apple CloudKit Assets API** — The Assets API from Apple CloudKit — 2 operation(s) for assets.
- **Apple CloudKit Changes API** — The Changes API from Apple CloudKit — 2 operation(s) for changes.
- **Apple CloudKit Records API** — The Records API from Apple CloudKit — 6 operation(s) for records.
- **Apple CloudKit Subscriptions API** — The Subscriptions API from Apple CloudKit — 3 operation(s) for subscriptions.
- **Apple CloudKit Tokens API** — The Tokens API from Apple CloudKit — 2 operation(s) for tokens.
- **Apple CloudKit Users API** — The Users API from Apple CloudKit — 4 operation(s) for users.
- **Apple CloudKit Zones API** — The Zones API from Apple CloudKit — 4 operation(s) for zones.

## Agentic access (1)

- **Cloudkit Agentic Access** — 23 operations · 23 acting

## Security (2)

- **Cloudkit Authentication** — apiKey · 2 schemes
- **Cloudkit Domain Security** — TLSv1.3 · HSTS · DMARC

## Tags

Apple, Cloud Storage, CloudKit, Database, iCloud, Mobile, Sync, Web Services

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/cloudkit/). Scores are computed from the provider's own public artifacts under a published rubric.