Nextcloud

Nextcloud is an open-source, self-hosted productivity platform offering file sync and share, collaboration, communication (Talk, Mail, Calendar, Contacts), and office (Nextcloud Office) features as a privacy-focused alternative to public cloud suites. Hosted in private datacenters or on-premises, Nextcloud is widely used by enterprises, governments, and individuals. The Nextcloud APIs include OCS REST APIs, WebDAV for file/folder operations, CalDAV/CardDAV, and an OpenAPI-described developer surface for apps and integrations.

Nextcloud publishes 6 API contracts indexed on the APIs.io network, including Autocomplete API, Capabilities API, DAV API, and 3 more. Tagged areas include File Sync, File Sharing, Collaboration, Self-Hosted, and Open Source.

Nextcloud’s developer surface includes authentication, documentation, pricing, signup flow, support, engineering blog, and 10 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

31.3/100 thin ▬ flat Agent 19/100 agent aware Front door AI 4/6 moderate saas Full breakdown ↓
scored 2026-10-23 · rubric v0.25.0 · Show this score on your site →

1 published contract

File SyncFile Sharing Collaboration Self-Hosted Open Source Productivity WebDAV

Kin Score

Kin Score How this is scored →
scored 2026-10-23 · rubric v0.25.0

Composite quality — 31.3/100 · thin

Contract Quality 7.9 / 19

Developer Ergonomics 4.3 / 15

Access Clarity 4.7 / 15

Operational Transparency 1.3 / 10

Contract Governance 0.0 / 9

Discoverability 5.0 / 8

Regulatory Posture 3.4 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 19/100 · 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 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

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

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.

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 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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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/nextcloud: 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.

Market	Position	Depth	Registered MCP server	Declares compatibility
Obsidian Community Plugins (third-party APIs the Obsidian plugin ecosystem integrates)	undeclared	-	-	1
Configuration-Management Content Registries (Ansible Galaxy, Chef Supermarket)	undeclared	-	-	1
OpenSSF Best Practices Badge Holders	undeclared	-	-	1
Flathub Linux App Publishers (company-published, domain-verified Linux desktop apps)	undeclared	-	-	1
Docker Hub Verified Publishers + Official Images	undeclared	-	-	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.

WebDAV

tagged — the provider's own APIs.json carries the standard as a tag; implementation not verified

APIs 6

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

Nextcloud OCS API

Open Collaboration Services REST API for managing shares, users, groups, capabilities, status, notifications, activities, and other Nextcloud server resources. Uses Basic Auth, ...

Nextcloud WebDAV API

WebDAV interface for files, folders, chunked uploads, trashbin, versions, comments, and search on a Nextcloud server. Provides the primary file-sync protocol used by Nextcloud d...

Nextcloud Autocomplete API

The Autocomplete API from Nextcloud — 1 operation(s) for autocomplete.

Nextcloud Capabilities API

The Capabilities API from Nextcloud — 1 operation(s) for capabilities.

Nextcloud DAV API

The DAV API from Nextcloud — 1 operation(s) for dav.

Nextcloud Users API

The Users API from Nextcloud — 2 operation(s) for users.

Open Collections 5

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

Nextcloud OCS Autocomplete API

OPEN COLLECTION

Nextcloud OCS Autocomplete Capabilities API

OPEN COLLECTION

Nextcloud OCS Autocomplete DAV API

OPEN COLLECTION

Nextcloud OCS Autocomplete Users API

OPEN COLLECTION

Nextcloud OCS API

OPEN COLLECTION

Security Posture 4

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

Nextcloud Authentication

http · 2 schemes

SECURITY

Nextcloud Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Nextcloud Vulnerability Disclosure

Hackerone

SECURITY

Nextcloud Trust Center

ISO 27001, PCI DSS, HIPAA, GDPR

SECURITY

Agentic Access 1

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

Nextcloud Agentic Access

5 operations · 1 acting

AGENTIC

Resources

Get Started 1

Portal, sign-up, and the first successful call

Signup

Signup

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

Developer Manual

Developer Manual

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Build 2

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

GitHub Server

GitHub Server

Access & Security 4

Authentication, authorization, and security posture

TrustCenter

TrustCenter

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 1

Pricing, plans, and the legal terms of use

Pricing

Pricing

Company 3

The organization behind the API

LinkedIn

Website

Website

Blog

Blog

Other 1

Properties that don't map to a standard resource type

App Store

App Store

Source (apis.yml)

aid: nextcloud
name: Nextcloud
description: Nextcloud is an open-source, self-hosted productivity platform offering file sync and share, collaboration, communication
  (Talk, Mail, Calendar, Contacts), and office (Nextcloud Office) features as a privacy-focused alternative to public cloud
  suites. Hosted in private datacenters or on-premises, Nextcloud is widely used by enterprises, governments, and individuals.
  The Nextcloud APIs include OCS REST APIs, WebDAV for file/folder operations, CalDAV/CardDAV, and an OpenAPI-described developer
  surface for apps and integrations.
type: Index
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  - security
  generated: '2026-09-03'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/nextcloud.png
tags:
- File Sync
- File Sharing
- Collaboration
- Self-Hosted
- Open Source
- Productivity
- WebDAV
tags_raw:
- File Sync
- File Sharing
- Collaboration
- Self-Hosted
- Open Source
- Productivity
- WebDAV
- Open-Source
url: https://raw.githubusercontent.com/api-evangelist/nextcloud/refs/heads/main/apis.yml
created: '2026-05-11'
modified: '2026-05-11'
specificationVersion: '0.23'
apis:
- aid: nextcloud:ocs-api
  name: Nextcloud OCS API
  description: Open Collaboration Services REST API for managing shares, users, groups, capabilities, status, notifications,
    activities, and other Nextcloud server resources. Uses Basic Auth, app passwords, or OAuth-style login flows; results
    returned as JSON or XML.
  humanURL: https://docs.nextcloud.com/server/latest/developer_manual/client_apis/OCS/ocs-api-overview.html
  baseURL: https://your-nextcloud.example/ocs/v2.php
  tags:
  - OCS
  - Share
  - User
  - Group
  - Notification
  tags_raw:
  - OCS
  - Shares
  - Users
  - Groups
  - Notifications
  properties:
  - type: Documentation
    url: https://docs.nextcloud.com/server/latest/developer_manual/client_apis/OCS/ocs-api-overview.html
  - type: OpenAPI Tutorial
    url: https://docs.nextcloud.com/server/latest/developer_manual/digging_deeper/api/openapi.html
- aid: nextcloud:webdav-api
  name: Nextcloud WebDAV API
  description: WebDAV interface for files, folders, chunked uploads, trashbin, versions, comments, and search on a Nextcloud
    server. Provides the primary file-sync protocol used by Nextcloud desktop and mobile clients.
  humanURL: https://docs.nextcloud.com/server/latest/developer_manual/client_apis/WebDAV/index.html
  baseURL: https://your-nextcloud.example/remote.php/dav
  tags:
  - WebDAV
  - File
  - Sync
  - Chunked Upload
  tags_raw:
  - WebDAV
  - Files
  - Sync
  - Chunked Upload
  properties:
  - type: Documentation
    url: https://docs.nextcloud.com/server/latest/developer_manual/client_apis/WebDAV/index.html
- aid: nextcloud:nextcloud-autocomplete-api
  name: Nextcloud Autocomplete API
  description: The Autocomplete API from Nextcloud — 1 operation(s) for autocomplete.
  humanURL: https://docs.nextcloud.com/server/latest/developer_manual/client_apis/OCS/ocs-api-overview.html
  baseURL: https://your-nextcloud.example/ocs/v2.php
  tags:
  - Autocomplete
  properties:
  - type: OpenAPI
    url: openapi/nextcloud-autocomplete-api-openapi.yml
- aid: nextcloud:nextcloud-capabilities-api
  name: Nextcloud Capabilities API
  description: The Capabilities API from Nextcloud — 1 operation(s) for capabilities.
  humanURL: https://docs.nextcloud.com/server/latest/developer_manual/client_apis/OCS/ocs-api-overview.html
  baseURL: https://your-nextcloud.example/ocs/v2.php
  tags:
  - Capabilities
  properties:
  - type: OpenAPI
    url: openapi/nextcloud-capabilities-api-openapi.yml
- aid: nextcloud:nextcloud-dav-api
  name: Nextcloud DAV API
  description: The DAV API from Nextcloud — 1 operation(s) for dav.
  humanURL: https://docs.nextcloud.com/server/latest/developer_manual/client_apis/OCS/ocs-api-overview.html
  baseURL: https://your-nextcloud.example/ocs/v2.php
  tags:
  - DAV
  properties:
  - type: OpenAPI
    url: openapi/nextcloud-dav-api-openapi.yml
- aid: nextcloud:nextcloud-users-api
  name: Nextcloud Users API
  description: The Users API from Nextcloud — 2 operation(s) for users.
  humanURL: https://docs.nextcloud.com/server/latest/developer_manual/client_apis/OCS/ocs-api-overview.html
  baseURL: https://your-nextcloud.example/ocs/v2.php
  tags:
  - User
  tags_raw:
  - Users
  properties:
  - type: OpenAPI
    url: openapi/nextcloud-users-api-openapi.yml
common:
- type: AgenticAccess
  url: agentic-access/nextcloud-agentic-access.yml
- type: TrustCenter
  url: security/nextcloud-trust-center.yml
- type: VulnerabilityDisclosure
  url: security/nextcloud-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/nextcloud-domain-security.yml
- type: Authentication
  url: authentication/nextcloud-authentication.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/nextcloud-gmbh
- type: Website
  url: https://nextcloud.com
- type: Documentation
  url: https://docs.nextcloud.com
- type: Developer Manual
  url: https://docs.nextcloud.com/server/latest/developer_manual/
- type: Pricing
  url: https://nextcloud.com/pricing/
- type: Signup
  url: https://nextcloud.com/sign-up/
- type: Support
  url: https://nextcloud.com/support/
- type: Blog
  url: https://nextcloud.com/blog/
- type: GitHubOrganization
  url: https://github.com/nextcloud
- type: GitHub Server
  url: https://github.com/nextcloud/server
- type: App Store
  url: https://apps.nextcloud.com
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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