Longhorn

Longhorn is a CNCF incubating lightweight, reliable, and easy-to-use distributed block storage system for Kubernetes. It creates a dedicated storage controller for each volume and replicates data across multiple nodes for high availability. Longhorn supports snapshots, backups to S3-compatible storage, disaster recovery, and recurring backup schedules.

Longhorn publishes 9 APIs on the APIs.io network, including BackingImages API, Backups API, EngineImages API, and 6 more. Tagged areas include Backup, Block Storage, Cloud Native, Incubating, and Kubernetes.

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

Longhorn’s developer surface includes authentication, documentation, getting-started guide, engineering blog, changelog, and 8 more developer resources.

🌐 Visit website 📡 Source on GitHub

53.7/100 developing ▬ flat Agent 31/100 agent aware Full breakdown ↓
scored 2026-07-28 · rubric v0.6

AccessFreemiumSelf serve⚡ Free to try

9 APIs

BackupBlock StorageCloud NativeIncubatingKubernetesPersistent Volumes

Kin Score

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

Composite quality — 53.7/100 · developing

Contract Quality 17.4 / 25

Developer Ergonomics 7.4 / 20

Commercial Clarity 7.9 / 20

Operational Transparency 6.8 / 13

Governance 7.0 / 12

Discoverability 7.2 / 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/longhorn: 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 9

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

Rate Limits 1

Documented rate limits and quota policies.

Longhorn Rate Limits

5 limits

RATE LIMITS

FinOps 1

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

JSON Schema 1

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

Get Started 1

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

Documentation 2

Reference material describing how the API behaves

JSONSchema

JSONSchema

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

GitHubOrganization

GitHubOrganization

GitHubRepository

GitHubRepository

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 2

Status, limits, changes, and where to get help

ChangeLog

ChangeLog

Community

Community

Company 2

The organization behind the API

Website

Website

Blog

Blog

Source (apis.yml)

aid: longhorn
name: Longhorn
description: Longhorn is a CNCF incubating lightweight, reliable, and easy-to-use distributed block storage system for Kubernetes.
  It creates a dedicated storage controller for each volume and replicates data across multiple nodes for high availability.
  Longhorn supports snapshots, backups to S3-compatible storage, disaster recovery, and recurring backup schedules.
url: https://longhorn.io
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · 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/longhorn.png
tags:
- Backup
- Block Storage
- Cloud Native
- Incubating
- Kubernetes
- Persistent Volumes
created: '2026-03-16'
modified: '2026-05-19'
specificationVersion: '0.19'
type: Index
apis:
- aid: longhorn:longhorn-backingimages-api
  name: Longhorn BackingImages API
  description: Backing image management for volumes that use pre-populated disk images as their base data. Backing images
    are immutable and can be shared across multiple volumes in the same namespace.
  humanURL: https://longhorn.io/docs/
  tags:
  - BackingImages
  properties:
  - type: OpenAPI
    url: openapi/longhorn-backingimages-api-openapi.yml
  - type: Documentation
    url: https://longhorn.io/docs/
  - type: GitHubRepository
    url: https://github.com/longhorn/longhorn
  - type: JSONSchema
    url: json-schema/longhorn-volume-schema.json
- aid: longhorn:longhorn-backups-api
  name: Longhorn Backups API
  description: Backup operations for storing volume snapshots to external storage targets such as S3-compatible storage or
    NFS. Backups can be restored to new volumes for disaster recovery.
  humanURL: https://longhorn.io/docs/
  tags:
  - Backups
  properties:
  - type: OpenAPI
    url: openapi/longhorn-backups-api-openapi.yml
  - type: Documentation
    url: https://longhorn.io/docs/
  - type: GitHubRepository
    url: https://github.com/longhorn/longhorn
  - type: JSONSchema
    url: json-schema/longhorn-volume-schema.json
- aid: longhorn:longhorn-engineimages-api
  name: Longhorn EngineImages API
  description: Engine image management for the Longhorn storage engine. Engine images are OCI images containing the Longhorn
    engine binary and are used to upgrade or manage storage engine versions.
  humanURL: https://longhorn.io/docs/
  tags:
  - EngineImages
  properties:
  - type: OpenAPI
    url: openapi/longhorn-engineimages-api-openapi.yml
  - type: Documentation
    url: https://longhorn.io/docs/
  - type: GitHubRepository
    url: https://github.com/longhorn/longhorn
  - type: JSONSchema
    url: json-schema/longhorn-volume-schema.json
- aid: longhorn:longhorn-nodes-api
  name: Longhorn Nodes API
  description: Node management for the Longhorn storage cluster including listing nodes, updating disk configurations, enabling
    or disabling scheduling, and managing node tags for workload placement.
  humanURL: https://longhorn.io/docs/
  tags:
  - Nodes
  properties:
  - type: OpenAPI
    url: openapi/longhorn-nodes-api-openapi.yml
  - type: Documentation
    url: https://longhorn.io/docs/
  - type: GitHubRepository
    url: https://github.com/longhorn/longhorn
  - type: JSONSchema
    url: json-schema/longhorn-volume-schema.json
- aid: longhorn:longhorn-recurringjobs-api
  name: Longhorn RecurringJobs API
  description: Recurring job management for scheduling automated snapshot and backup operations on a cron-based schedule.
    Recurring jobs can be applied to individual volumes or all volumes via groups.
  humanURL: https://longhorn.io/docs/
  tags:
  - RecurringJobs
  properties:
  - type: OpenAPI
    url: openapi/longhorn-recurringjobs-api-openapi.yml
  - type: Documentation
    url: https://longhorn.io/docs/
  - type: GitHubRepository
    url: https://github.com/longhorn/longhorn
  - type: JSONSchema
    url: json-schema/longhorn-volume-schema.json
- aid: longhorn:longhorn-settings-api
  name: Longhorn Settings API
  description: System-wide Longhorn settings management including backup targets, replica counts, node scheduling policies,
    data locality settings, and storage over-provisioning configuration.
  humanURL: https://longhorn.io/docs/
  tags:
  - Settings
  properties:
  - type: OpenAPI
    url: openapi/longhorn-settings-api-openapi.yml
  - type: Documentation
    url: https://longhorn.io/docs/
  - type: GitHubRepository
    url: https://github.com/longhorn/longhorn
  - type: JSONSchema
    url: json-schema/longhorn-volume-schema.json
- aid: longhorn:longhorn-snapshots-api
  name: Longhorn Snapshots API
  description: Snapshot operations for volumes including creating, listing, deleting, reverting to, and purging snapshots.
    Snapshots capture the state of a volume at a point in time and can be used as the basis for backups.
  humanURL: https://longhorn.io/docs/
  tags:
  - Snapshots
  properties:
  - type: OpenAPI
    url: openapi/longhorn-snapshots-api-openapi.yml
  - type: Documentation
    url: https://longhorn.io/docs/
  - type: GitHubRepository
    url: https://github.com/longhorn/longhorn
  - type: JSONSchema
    url: json-schema/longhorn-volume-schema.json
- aid: longhorn:longhorn-systembackups-api
  name: Longhorn SystemBackups API
  description: System-level backup and restore operations for the entire Longhorn configuration including all volumes, settings,
    and resource definitions.
  humanURL: https://longhorn.io/docs/
  tags:
  - SystemBackups
  properties:
  - type: OpenAPI
    url: openapi/longhorn-systembackups-api-openapi.yml
  - type: Documentation
    url: https://longhorn.io/docs/
  - type: GitHubRepository
    url: https://github.com/longhorn/longhorn
  - type: JSONSchema
    url: json-schema/longhorn-volume-schema.json
- aid: longhorn:longhorn-volumes-api
  name: Longhorn Volumes API
  description: Volume lifecycle management including creating, attaching, detaching, expanding, and deleting volumes. Also
    includes volume actions such as activating, canceling expansion, and managing replicas.
  humanURL: https://longhorn.io/docs/
  tags:
  - Volumes
  properties:
  - type: OpenAPI
    url: openapi/longhorn-volumes-api-openapi.yml
  - type: Documentation
    url: https://longhorn.io/docs/
  - type: GitHubRepository
    url: https://github.com/longhorn/longhorn
  - type: JSONSchema
    url: json-schema/longhorn-volume-schema.json
common:
- type: AgenticAccess
  url: agentic-access/longhorn-agentic-access.yml
- type: DomainSecurity
  url: security/longhorn-domain-security.yml
- type: Authentication
  url: authentication/longhorn-authentication.yml
- type: JSONLD
  url: json-ld/longhorn-context.jsonld
  name: Longhorn JSON-LD Context
  description: Linked data context mapping Longhorn resources to standard vocabularies.
- type: JSONSchema
  url: json-schema/longhorn-volume-schema.json
  name: Longhorn Volume JSON Schema
  description: JSON Schema for Longhorn volume, replica, snapshot, node, and recurring job data models.
- type: Website
  name: Longhorn Website
  description: Official Longhorn project website.
  url: https://longhorn.io/
- type: Documentation
  name: Longhorn Documentation
  description: Official Longhorn documentation.
  url: https://longhorn.io/docs/
- type: GettingStarted
  name: Longhorn Quick Installation
  description: Quick installation guide for deploying Longhorn on Kubernetes.
  url: https://longhorn.io/docs/1.11.1/deploy/install/
- type: Blog
  name: Longhorn Blog
  description: Official Longhorn blog with release announcements and articles.
  url: https://longhorn.io/blog/
- type: ChangeLog
  name: Longhorn Releases
  description: Release history and changelogs for Longhorn.
  url: https://github.com/longhorn/longhorn/releases
- type: GitHubOrganization
  name: Longhorn GitHub Organization
  description: GitHub organization hosting all Longhorn source code.
  url: https://github.com/longhorn
- type: GitHubRepository
  name: Longhorn GitHub Repository
  description: Main Longhorn source code repository.
  url: https://github.com/longhorn/longhorn
- type: Community
  name: Longhorn Community
  description: Community resources including Slack, mailing lists, and discussions.
  url: https://longhorn.io/community/
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com