Joomla website screenshot

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 2026-08-05 · rubric v0.9.1
AccessFree
1 APIs
CMSContent ManagementOpen SourcePHPREST APIArticlesCategoriesContactsMenusModulesUsers

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-05 · rubric v0.9.1
Composite quality — 17.6/100 · emerging
Contract Quality 0.0 / 25
Developer Ergonomics 2.2 / 20
Commercial Clarity 7.9 / 20
Operational Transparency 0.7 / 13
Governance 0.0 / 12
Discoverability 6.9 / 10
Agent readiness — 3/100 · human only
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 10
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
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.

Joomla Web Services API

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...

Pricing Plans 1

Published pricing tiers and plan structures.

Joomla Plans Pricing

1 plans

PLANS

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.

Joomla Finops

FINOPS

Security Posture 2

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

Joomla Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Joomla Vulnerability Disclosure

security.txt · contact published

SECURITY

Resources

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
LinkedIn
 Blog
Blog
 BlogPosts
BlogPosts

Other 1

Properties that don't map to a standard resource type

X
X

Source (apis.yml)

apis.yml Raw ↑ 
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: '0.19'
tags:
- 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
  - 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