Rook website screenshot

Rook

Rook is a CNCF graduated cloud-native storage orchestrator for Kubernetes, providing the platform, framework, and support for Ceph distributed storage systems to natively integrate with cloud-native environments. It automates the deployment, configuration, provisioning, scaling, upgrading, and monitoring of storage systems through Kubernetes operators and Custom Resource Definitions (CRDs), with primary support for Ceph block storage, shared filesystems, and S3-compatible object storage.

Rook publishes 6 API contracts indexed on the APIs.io network, including Buckets API, Multipart Uploads API, Objects API, and 3 more. Tagged areas include Block Storage, CNCF, Ceph, Cloud-Native, and File Storage.

The Rook catalog on APIs.io includes 1 JSON-LD context and 2 Spectral governance rulesets.

Rook’s developer surface includes authentication, documentation, getting-started guide, engineering blog, changelog, Stack Overflow tag, and 27 more developer resources.

🌐 Visit website📡 Profile data on GitHub
41.3/100 developing ▬ flat Agent 24/100 agent aware Front door AI 1/6 silent self hosted · Apache-2.0 Full breakdown ↓
scored 2026-10-17 · rubric v0.24.0
AccessFreemiumSelf serve⚡ Free to try
1 published contract
Block StorageCNCFCephCloud-NativeFile StorageGraduatedKubernetesObject StorageOrchestrationStorage

What this lets a business do 1

Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →

Information Technology Management
BC-600
BucketsObjects
PUT /{bucket} GET /{bucket} PUT /{bucket}/{key} GET /{bucket}/{key}

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-10-17 · rubric v0.24.0
Composite quality — 41.3/100 · developing
Contract Quality 9.0 / 16
Developer Ergonomics 5.9 / 13
Access Clarity 0.7 / 13
Operational Transparency 1.6 / 8
Contract Governance 2.1 / 8
Discoverability 3.7 / 7
Regulatory Posture 2.5 / 15
Open Source Surface 10.0 / 10
Create-or-Update Ergonomics 0.0 / 10
Agent readiness — 24/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
Documented Reversibility 0 / 6
MCP Server 0 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 8 / 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
Delegated User Identity 0 / 6
Protected Resource Metadata 0 / 5
Registration Without a Human 0 / 6
Agentic Commerce Well-Known Document 0 / 5
Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.
Open Source Surface applies to this provider. This product is open source and we read its repository directly, so Open Source Surface carries 10 points of the composite. It is scored from what the repository actually publishes — a security policy, a contribution guide, a release history, a code of conduct — read live from the provider rather than inferred from our own catalog pointers. This facet adds; nothing was taken away to make room for it. An open-source project is not excused from the commercial facets, because exemption would strip it of the points it does earn. If we have the wrong repository, or this product is not open source, say so on your provider repo and we will drop the facet rather than have you publish against it.
Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.
The six quality facets above are damped to 65 points between them, because both conditional facets apply and carry 35 points together. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 65% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/rook: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

MarketPositionDepthRegistered MCP serverDeclares compatibility
Object Storage standard 17.2 (thin) - 1
Cloud Native (Kubernetes, CNCF, FinOps) standard 17.2 (thin) - 1

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

Standards implemented 1

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

The S3 Interface reaches extended
declared — publishes a spec that declares them
8 core of 116 operations graded · api-commons/storage

APIs 6

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

Rook Ceph Custom Resource API

Rook extends Kubernetes through Custom Resource Definitions (CRDs) to declaratively manage Ceph storage clusters. The CRD API includes resources for CephCluster, CephBlockPool, ...

Rook Ceph Block Storage API

Rook provides Ceph block storage (RBD) through Kubernetes StorageClasses and PersistentVolumeClaims. The CephBlockPool CRD and associated StorageClass allow applications to dyna...

Rook Ceph Shared Filesystem API

Rook manages CephFilesystem resources to provision shared POSIX-compliant file storage backed by CephFS. Multiple pods can simultaneously read and write to shared filesystem vol...

Rook Buckets API

S3-compatible bucket creation, listing, deletion, and configuration operations on Ceph Object Storage provisioned by Rook

Rook Multipart Uploads API

S3-compatible multipart upload operations for large objects, including initiation, part upload, completion, and abort

Rook Objects API

S3-compatible object upload, download, listing, deletion, and metadata operations within Ceph Object Storage buckets

Open Collections 5

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

API Collection

OPEN COLLECTION

Rook Ceph Object Storage Buckets API

OPEN COLLECTION

Rook Ceph Object Storage API

OPEN COLLECTION

Rook Ceph Object Storage Buckets Multipart Uploads API

OPEN COLLECTION

Rook Ceph Object Storage Buckets Objects API

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Rook Plans Pricing

2 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Rook Rate Limits

2 limits

RATE LIMITS

FinOps 1

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

Rook Finops

FINOPS

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Rook Context

0 classes · 6 properties

JSON-LD

Spectral Rules 2

Spectral governance rulesets for linting and validating these APIs.

Rook — jsonschema rules

6 rules · 4 warnings 2 info

SPECTRAL

Rook API Rules

17 rules · 2 errors 13 warnings 2 info

SPECTRAL

JSON Schema 4

Standalone JSON Schema definitions for this provider's data models.

Rook CephBlockPool

5 properties

JSON SCHEMA

Rook Ceph CRD Resources

0 properties

JSON SCHEMA

Rook CephFilesystem

5 properties

JSON SCHEMA

Rook CephObjectStore

5 properties

JSON SCHEMA

JSON Structure 4

JSON Structure definitions describing this provider's data shapes.

Rook Ceph Block Pool Structure

0 properties

JSON STRUCTURE

Rook Ceph Cluster Structure

0 properties

JSON STRUCTURE

Rook Ceph Filesystem Structure

0 properties

JSON STRUCTURE

Rook Ceph Object Store Structure

0 properties

JSON STRUCTURE

Examples 3

Example request and response payloads for these APIs.

Rook List Buckets Example

2 fields

EXAMPLE

Rook List Objects Example

2 fields

EXAMPLE

Rook Put Object Example

2 fields

EXAMPLE

Security Posture 2

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

Rook Authentication

apiKey · 1 scheme

SECURITY

Rook Domain Security

TLSv1.3 · HSTS

SECURITY

Agentic Access 1

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

Rook Agentic Access

11 operations · 5 acting

11 operations · 5 acting

AGENTIC

Resources

Get Started 1

Portal, sign-up, and the first successful call

GettingStarted
GettingStarted

Documentation 6

Reference material describing how the API behaves

ContributionGuide
ContributionGuide
 JSONSchema
JSONSchema
 JSONSchema
JSONSchema
 JSONSchema
JSONSchema
 JSONSchema
JSONSchema
 Documentation
Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess

Design & Contract 4

Pagination, idempotency, versioning, errors, and events

JSONStructure
JSONStructure
 JSONLD
JSONLD
 Vocabulary
Vocabulary
 Rules
Rules

Build 3

SDKs, sample code, and the tooling you integrate with

CodeOfConduct
CodeOfConduct
 GitHubOrganization
GitHubOrganization
 GitHubRepository
GitHubRepository

Access & Security 3

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity
 Authentication
Authentication
 Security
Security

Operate 7

Status, limits, changes, and where to get help

RateLimits
RateLimits
 IssueTracker
IssueTracker
 Releases
Releases
 Community
Community
 Slack
Slack
 ChangeLog
ChangeLog
 StackOverflow
StackOverflow

Scroll for all 7

Commercial 3

Pricing, plans, and the legal terms of use

Plans
Plans
 FinOps
FinOps
 License
License

Company 3

The organization behind the API

LinkedIn
LinkedIn
 Website
Website
 Blog
Blog

Other 2

Properties that don't map to a standard resource type

CapabilityMap
CapabilityMap
 X
X

Source (apis.yml)

apis.yml Raw ↑ 
aid: rook
deliveryModel:
  model: self-hosted
  license: Apache-2.0
  open_source: true
  commercial: false
  callable_host: false
  label: Self-hosted open source · you run it yourself
  confidence: high
  source:
  - license
  - openapi
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-09-03'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/rook.png
name: Rook
description: Rook is a CNCF graduated cloud-native storage orchestrator for Kubernetes, providing the platform, framework,
  and support for Ceph distributed storage systems to natively integrate with cloud-native environments. It automates the
  deployment, configuration, provisioning, scaling, upgrading, and monitoring of storage systems through Kubernetes operators
  and Custom Resource Definitions (CRDs), with primary support for Ceph block storage, shared filesystems, and S3-compatible
  object storage.
type: Index
url: https://raw.githubusercontent.com/api-evangelist/rook/refs/heads/main/apis.yml
tags:
- Block Storage
- CNCF
- Ceph
- Cloud-Native
- File Storage
- Graduated
- Kubernetes
- Object Storage
- Orchestration
- Storage
tags_raw:
- Block Storage
- CNCF
- Ceph
- Cloud Native
- File Storage
- Graduated
- Kubernetes
- Object Storage
- Orchestration
- Storage
created: '2025-01-01'
modified: '2026-05-19'
specificationVersion: '0.23'
apis:
- aid: rook:rook-ceph-crd-api
  name: Rook Ceph Custom Resource API
  description: Rook extends Kubernetes through Custom Resource Definitions (CRDs) to declaratively manage Ceph storage clusters.
    The CRD API includes resources for CephCluster, CephBlockPool, CephFilesystem, CephObjectStore, CephObjectStoreUser, CephNFS,
    CephRBDMirror, and related storage primitives, enabling operators to configure and manage Ceph storage entirely through
    Kubernetes manifests.
  humanURL: https://rook.io/docs/rook/latest/CRDs/Cluster/ceph-cluster-crd/
  properties:
  - type: Documentation
    url: https://rook.io/docs/rook/latest/CRDs/Cluster/ceph-cluster-crd/
  - type: Reference
    url: https://rook.io/docs/rook/latest/CRDs/
  - type: JSONSchema
    url: json-schema/rook-ceph-cluster-schema.json
  - type: JSONStructure
    url: json-structure/rook-ceph-cluster-structure.json
  tags:
  - Ceph
  - CRD
  - Declarative
  - Kubernetes
  - Storage
- aid: rook:rook-ceph-block-storage-api
  name: Rook Ceph Block Storage API
  description: Rook provides Ceph block storage (RBD) through Kubernetes StorageClasses and PersistentVolumeClaims. The CephBlockPool
    CRD and associated StorageClass allow applications to dynamically provision block volumes backed by Ceph RADOS Block Device,
    supporting ReadWriteOnce access modes for stateful workloads.
  humanURL: https://rook.io/docs/rook/latest/CRDs/Block-Storage/ceph-block-pool-crd/
  properties:
  - type: Documentation
    url: https://rook.io/docs/rook/latest/CRDs/Block-Storage/ceph-block-pool-crd/
  - type: Reference
    url: https://rook.io/docs/rook/latest/CRDs/Block-Storage/
  - type: JSONSchema
    url: json-schema/rook-ceph-block-pool-schema.json
  - type: JSONStructure
    url: json-structure/rook-ceph-block-pool-structure.json
  tags:
  - Block Storage
  - Ceph
  - Kubernetes
  - PersistentVolume
  - RBD
- aid: rook:rook-ceph-filesystem-api
  name: Rook Ceph Shared Filesystem API
  description: Rook manages CephFilesystem resources to provision shared POSIX-compliant file storage backed by CephFS. Multiple
    pods can simultaneously read and write to shared filesystem volumes, making it suitable for workloads requiring ReadWriteMany
    access, configured through the CephFilesystem CRD and a corresponding StorageClass.
  humanURL: https://rook.io/docs/rook/latest/CRDs/Shared-Filesystem/ceph-filesystem-crd/
  properties:
  - type: Documentation
    url: https://rook.io/docs/rook/latest/CRDs/Shared-Filesystem/ceph-filesystem-crd/
  - type: Reference
    url: https://rook.io/docs/rook/latest/CRDs/Shared-Filesystem/
  - type: JSONSchema
    url: json-schema/rook-ceph-filesystem-schema.json
  - type: JSONStructure
    url: json-structure/rook-ceph-filesystem-structure.json
  tags:
  - CephFS
  - File Storage
  - Kubernetes
  - POSIX
  - Shared Filesystem
- aid: rook:rook-buckets-api
  name: Rook Buckets API
  description: S3-compatible bucket creation, listing, deletion, and configuration operations on Ceph Object Storage provisioned
    by Rook
  humanURL: https://rook.io/docs/rook/latest/CRDs/Cluster/ceph-cluster-crd/
  tags:
  - Buckets
  properties:
  - type: OpenAPI
    url: openapi/rook-buckets-api-openapi.yml
  - type: Documentation
    url: https://rook.io/docs/rook/latest/CRDs/Object-Storage/ceph-object-store-crd/
  - type: Reference
    url: https://rook.io/docs/rook/latest/CRDs/Object-Storage/
  - type: JSONSchema
    url: json-schema/rook-ceph-object-store-schema.json
  - type: JSONStructure
    url: json-structure/rook-ceph-object-store-structure.json
- aid: rook:rook-multipart-uploads-api
  name: Rook Multipart Uploads API
  description: S3-compatible multipart upload operations for large objects, including initiation, part upload, completion,
    and abort
  humanURL: https://rook.io/docs/rook/latest/CRDs/Cluster/ceph-cluster-crd/
  tags:
  - Multipart Uploads
  properties:
  - type: OpenAPI
    url: openapi/rook-multipart-uploads-api-openapi.yml
  - type: Documentation
    url: https://rook.io/docs/rook/latest/CRDs/Object-Storage/ceph-object-store-crd/
  - type: Reference
    url: https://rook.io/docs/rook/latest/CRDs/Object-Storage/
  - type: JSONSchema
    url: json-schema/rook-ceph-object-store-schema.json
  - type: JSONStructure
    url: json-structure/rook-ceph-object-store-structure.json
- aid: rook:rook-objects-api
  name: Rook Objects API
  description: S3-compatible object upload, download, listing, deletion, and metadata operations within Ceph Object Storage
    buckets
  humanURL: https://rook.io/docs/rook/latest/CRDs/Cluster/ceph-cluster-crd/
  tags:
  - Objects
  properties:
  - type: OpenAPI
    url: openapi/rook-objects-api-openapi.yml
  - type: Documentation
    url: https://rook.io/docs/rook/latest/CRDs/Object-Storage/ceph-object-store-crd/
  - type: Reference
    url: https://rook.io/docs/rook/latest/CRDs/Object-Storage/
  - type: JSONSchema
    url: json-schema/rook-ceph-object-store-schema.json
  - type: JSONStructure
    url: json-structure/rook-ceph-object-store-structure.json
common:
- type: Plans
  url: plans/rook-plans-pricing.yml
- type: RateLimits
  url: rate-limits/rook-rate-limits.yml
- type: FinOps
  url: finops/rook-finops.yml
- type: CapabilityMap
  url: capabilities/rook-capability-edges.yml
  name: Rook Business Capability Map
- type: IssueTracker
  url: https://github.com/rook/rook/issues
- type: Releases
  url: https://github.com/rook/rook/releases
- type: CodeOfConduct
  url: https://github.com/rook/rook/blob/master/CODE_OF_CONDUCT.md
- type: ContributionGuide
  url: https://github.com/rook/rook/blob/master/CONTRIBUTING.md
- type: License
  name: Apache-2.0
  url: https://github.com/rook/rook/blob/master/LICENSE
- type: AgenticAccess
  url: agentic-access/rook-agentic-access.yml
- type: DomainSecurity
  url: security/rook-domain-security.yml
- type: Authentication
  url: authentication/rook-authentication.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/rook-security
- type: JSONSchema
  url: json-schema/rook-ceph-cluster-schema.json
- type: JSONSchema
  url: json-schema/rook-ceph-block-pool-schema.json
- type: JSONSchema
  url: json-schema/rook-ceph-filesystem-schema.json
- type: JSONSchema
  url: json-schema/rook-ceph-object-store-schema.json
- type: JSONStructure
  url: json-structure/rook-ceph-cluster-structure.json
- type: JSONLD
  url: json-ld/rook-context.jsonld
- type: Vocabulary
  url: vocabulary/rook-vocabulary.yml
- type: Rules
  url: rules/rook-spectral-rules.yml
- type: Website
  url: https://rook.io
- type: Documentation
  url: https://rook.io/docs/rook/latest/
- type: GettingStarted
  url: https://rook.io/docs/rook/latest/Getting-Started/quickstart/
- type: GitHubOrganization
  url: https://github.com/rook
- type: GitHubRepository
  url: https://github.com/rook/rook
- type: Blog
  url: https://blog.rook.io/
- type: Community
  url: https://rook.io/community/
- type: Slack
  url: https://slack.rook.io
- type: ChangeLog
  url: https://github.com/rook/rook/blob/master/CHANGELOG.md
- type: Security
  url: https://github.com/rook/rook/blob/master/SECURITY.md
- type: StackOverflow
  url: https://stackoverflow.com/questions/tagged/rook
- type: X
  url: https://twitter.com/rook_io
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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