Joomla

Joomla is a free and open-source content management system (CMS) built in PHP that includes a built-in REST API for managing core content types. The Web Services API provides JSON endpoints for articles, categories, contacts, banners, menus, modules, tags, fields, and user accounts. Authentication is handled via Bearer tokens with optional HMAC security, and every endpoint requires authentication unless explicitly marked public. Joomla is maintained entirely by volunteers and released under the GNU General Public License.

Joomla publishes 1 API on the APIs.io network. Tagged areas include CMS, Content Management, Open-Source, PHP, and REST API.

Joomla’s developer surface includes documentation, engineering blog, pricing, and 11 more developer resources.

🌐 Visit website 📡 Source on GitHub

17.6/100 emerging ▬ flat Agent 3/100 human only Full breakdown ↓
scored 2026-08-25 · rubric v0.14.0

AccessFree

1 APIs

CMS Content Management Open-Source PHP REST API Articles Categories Contacts Menus Modules User

Kin Score

Kin Score How this is scored →
scored 2026-08-25 · rubric v0.14.0

Composite quality — 17.6/100 · emerging

Contract Quality 0.0 / 25

Developer Ergonomics 2.1 / 20

Access Clarity 7.9 / 20

Operational Transparency 0.7 / 13

Contract Governance 0.0 / 12

Discoverability 6.9 / 10

Agent readiness — 3/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 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

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Surface 0 / 5

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/joomla: 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 1

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

Rate Limits 1

Documented rate limits and quota policies.

Joomla Rate Limits

0 limits

RATE LIMITS

FinOps 1

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

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Design & Contract 1

Pagination, idempotency, versioning, errors, and events

JSONLD

JSONLD

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrg

GitHubOrg

Access & Security 2

Authentication, authorization, and security posture

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

Plans

Plans

FinOps

FinOps

Company 4

The organization behind the API

Website

Website

LinkedIn

Blog

Blog

BlogPosts

BlogPosts

Other 1

Properties that don't map to a standard resource type

Source (apis.yml)

aid: joomla
name: Joomla
description: 'Joomla is a free and open-source content management system (CMS) built in PHP that includes a built-in REST
  API for managing core content types. The Web Services API provides JSON endpoints for articles, categories, contacts, banners,
  menus, modules, tags, fields, and user accounts. Authentication is handled via Bearer tokens with optional HMAC security,
  and every endpoint requires authentication unless explicitly marked public. Joomla is maintained entirely by volunteers
  and released under the GNU General Public License.

  '
accessModel:
  pricing: free
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Free
  confidence: medium
  source:
  - plans
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/joomla.png
url: https://raw.githubusercontent.com/api-evangelist/joomla/refs/heads/main/apis.yml
created: 2026-06-13
modified: 2026-06-13
specificationVersion: '0.23'
tags:
- CMS
- Content Management
- Open-Source
- PHP
- REST API
- Articles
- Categories
- Contacts
- Menus
- Modules
- User
tags_raw:
- CMS
- Content Management
- Open Source
- PHP
- REST API
- Articles
- Categories
- Contacts
- Menus
- Modules
- Users
apis:
- aid: joomla:joomla-web-services-api
  name: Joomla Web Services API
  description: 'The built-in Joomla Web Services API provides RESTful JSON endpoints for managing articles, categories, contacts,
    banners, menus, modules, tags, custom fields, and user accounts in a Joomla installation. Authentication uses Bearer tokens
    issued per-user. The API is available in Joomla 4.x and later and follows the {base_url}/api/index.php/v1/ URL pattern.

    '
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://docs.joomla.org/J4.x:Joomla_Core_APIs
  baseURL: https://{your-joomla-site}/api/index.php/v1
  tags:
  - Articles
  - Categories
  - Contacts
  - Banners
  - Menus
  - Modules
  - User
  - Tags
  - Fields
  tags_raw:
  - Articles
  - Categories
  - Contacts
  - Banners
  - Menus
  - Modules
  - Users
  - Tags
  - Fields
  properties:
  - type: Documentation
    url: https://docs.joomla.org/J4.x:Joomla_Core_APIs
  - type: Specification
    url: https://docs.joomla.org/Joomla_Api_Specification
  contact:
  - FN: Joomla Developer Community
    url: https://developer.joomla.org
    email: ''
common:
- type: VulnerabilityDisclosure
  url: security/joomla-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/joomla-domain-security.yml
- type: Website
  url: https://www.joomla.org
- type: Documentation
  url: https://docs.joomla.org/J4.x:Joomla_Core_APIs
- type: GitHubOrg
  url: https://github.com/joomla
- type: LinkedIn
  url: https://www.linkedin.com/company/joomla
- type: Blog
  url: https://community.joomla.org/blogs.html
- type: Pricing
  url: https://www.joomla.org/download.html
- type: X
  url: https://twitter.com/joomla
- type: Plans
  url: plans/joomla-plans-pricing.yml
- type: RateLimits
  url: rate-limits/joomla-rate-limits.yml
- type: FinOps
  url: finops/joomla-finops.yml
- type: BlogPosts
  url: blogs/blogs.json
- type: JSONLD
  url: json-ld/joomla.json
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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