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.

The Nextcloud catalog on APIs.io includes 1 Spectral governance ruleset.

Nextcloud’s developer surface includes authentication, documentation, pricing, signup flow, support, engineering blog, and 11 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

32.7/100 thin ▬ flat Agent 19/100 agent aware Front door AI 4/6 moderate Heartbeat 100/100 alive saas Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

1 published contract

File Sync File Sharing Collaboration Self-Hosted Open Source Productivity WebDAV

Kin Score

Kin Score How this is scored →
scored 2026-11-13 · rubric v0.28.0

Composite quality — 32.7/100 · thin

Contract Quality 7.9 / 19

Developer Ergonomics 4.3 / 15

Access Clarity 4.5 / 15

Operational Transparency 1.4 / 10

Contract Governance 1.2 / 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

MCP Tool Quality 6 / 6

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/.

Show this score on your site.

It updates itself when the score changes. Paste this where you link to your API docs:

<a href="https://apis.io/providers/nextcloud/"><img src="https://apis.io/badge/nextcloud/card.svg" alt="Nextcloud on APIs.io — Kin Score by API Evangelist"></a>

Other styles, a README pill and a shields.io endpoint are on the badge page.

Raise your score.

Agent readiness — checks not met, largest first (exact, from this profile):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship Ask about this →
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented) Ask about this →
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes Ask about this →
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0 Ask about this →
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented) Ask about this →
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link Ask about this →

10 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Contract Quality scores 42.2 — up to +14.5 composite points Ask about this →
Developer Ergonomics scores 28.6 — up to +14.3 composite points Ask about this →
Access Clarity scores 29.8 — up to +14.0 composite points Ask about this →

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Not sure how this applies to your stack? Ask about any one item. Kin Lane reads every question, looks at your profile and your situation, and replies with what a fix would take — scoped to that one area, priced up front, yours whether you ship it or not. Ask a question →

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 the provider profile at artifacts.apis.io/nextcloud/apis.yml: open an issue on github.com/api-evangelist/nextcloud to ask a question or point us at an artifact you publish. 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)	standard	43.4	-	1
Configuration-Management Content Registries (Ansible Galaxy, Chef Supermarket)	standard	43.4	-	1
OpenSSF Best Practices Badge Holders	standard	43.4	-	1
Flathub Linux App Publishers (company-published, domain-verified Linux desktop apps)	standard	43.4	-	1
Docker Hub Verified Publishers + Official Images	standard	43.4	-	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 2

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

OpenAPI

measured — observed by APIs.io (published)

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

Compliance 1

Attestations the provider states (SOC 2, ISO 27001 and others), quoted from its own trust page. APIs.io verifies none of them.

Nextcloud

1 quoted statement, read from Nextcloud's own page on 2026-11-10.

COMPLIANCE

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs. Counts are the severity each rule declares, not results of running them.

Nextcloud API Rules

55 rules · 53 error-severity 1 warn-severity 1 info-severity

SPECTRAL

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 (API Evangelist recommendations) 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 2

Properties that don't map to a standard resource type

App Store

App Store

Attestations

Attestations

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: '2026-11-13'
  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
- type: Attestations
  url: compliance/nextcloud-compliance.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

Nextcloud API — frequently asked questions

Does Nextcloud have an API?

Yes. APIs.io lists 6 APIs from Nextcloud, including Nextcloud OCS API, Nextcloud WebDAV API and Nextcloud Autocomplete API, and 3 more.

Is there an OpenAPI specification for the Nextcloud API?

Yes. APIs.io indexes 4 OpenAPI specifications for Nextcloud, each linked for download from this page.

How do I authenticate with the Nextcloud API?

Nextcloud uses bearer-token authentication (http · 2 schemes). The details are profiled on APIs.io as Nextcloud Authentication.

Is the Nextcloud API ready for AI agents?

Nextcloud has a Kin Score of 32.7 out of 100 (thin) and an Agent Readiness score of 19.0 (agent-aware), scored by API Evangelist on 2026-11-13.

Work with this as data

Every provider here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for providers

9 MCP tools reach this

find_providersBrowse and filter every provider in the catalog.
get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools →

Call it yourself

curl for this page

This provider

curl "https://apis.io/api/v1/providers/nextcloud"

All providers

curl "https://apis.io/api/v1/providers?limit=25"

Every operation they expose

curl "https://apis.io/api/v1/providers/nextcloud/operations?limit=25"

How their score was established

curl "https://apis.io/api/v1/providers/nextcloud/evidence"

Calls without X-API-Key need no key. Calls with it need a paid plan — get a key.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.