Authelia

Authelia is an open source authentication and authorization server providing multi-factor authentication and single sign-on for applications behind a reverse proxy. It supports OpenID Connect 1.0, OAuth 2.0, TOTP, WebAuthn, and Duo Push as authentication methods. Authelia exposes a REST API documented with an OpenAPI specification and integrates with nginx, Traefik, Caddy, and other reverse proxies.

Authelia publishes 3 APIs on the APIs.io network, including Discovery API, OIDC API, and 1 more. Tagged areas include Authentication, Authorization, LDAP, MFA, and Open-Source.

Authelia’s developer surface includes authentication, documentation, changelog, support, CLI, API reference, getting-started guide, and 37 more developer resources.

🌐 Visit website 📡 Source on GitHub

52.8/100 developing ▬ flat Agent 34/100 agent ready self hosted · Apache-2.0 Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessFreemiumSelf serve

1 APIs 7 Features 4 Use Cases

Authentication Authorization LDAP MFA Open-Source OpenID Connect Self-Hosted SSO

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 52.8/100 · developing

Contract Quality 11.2 / 20

Developer Ergonomics 9.0 / 16

Access Clarity 2.9 / 16

Operational Transparency 7.7 / 10

Contract Governance 1.7 / 10

Discoverability 6.1 / 8

Open Source Surface 10.0 / 10

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 34/100 · agent ready

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 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 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 6 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Open Source Surface applies to this provider. This product is open source and we read its repository directly, so Open Source Surface carries 10 points of the composite. It is scored from what the repository actually publishes — a security policy, a contribution guide, a release history, a code of conduct — read live from the provider rather than inferred from our own catalog pointers. This facet adds; nothing was taken away to make room for it. An open-source project is not excused from the commercial facets, because exemption would strip it of the points it does earn. If we have the wrong repository, or this product is not open source, say so on your provider repo and we will drop the facet rather than have you publish against 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 80 points between them, because the conditional facet above carries the other 20. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 80% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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/authelia: 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 →

APIs 4

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

Authelia OpenID Connect 1.0 Provider

Authelia acts as an OpenID Certified OpenID Connect 1.0 Provider supporting Authorization Code, Implicit, and Hybrid flows with PKCE, PAR, and various token endpoint authenticat...

Authelia API

The full first-party Authelia HTTP API — the portal, authorization, authentication, second factor, user information, session elevation, password reset/change and OpenID Connect ...

Authelia Discovery API

Well-known discovery endpoints.

Authelia OIDC API

OpenID Connect 1.0 / OAuth 2.0 provider endpoints.

Open Collections 4

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

API Collection

OPEN COLLECTION

Authelia OpenID Connect 1.0 Endpoints Discovery API

OPEN COLLECTION

Authelia OpenID Connect 1.0 Endpoints Discovery OIDC API

OPEN COLLECTION

Authelia OpenID Connect 1.0 Endpoints

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Authelia Plans Pricing

0 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Authelia Rate Limits

11 limits

RATE LIMITS

FinOps 1

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

Authelia Finops

FINOPS

Features 7

Notable capabilities this provider offers.

Multi-Factor Authentication

Supports TOTP, WebAuthn/FIDO2, Duo Push, and mobile authenticator apps as second factors.

OpenID Connect 1.0 Provider

OpenID Certified identity provider supporting Authorization Code, Implicit, and Hybrid flows.

Single Sign-On

Session-based SSO across all applications behind the reverse proxy with configurable session lifetime.

LDAP/Active Directory Integration

User authentication against LDAP, Active Directory, and OpenLDAP directories with group-based access control.

Access Control Rules

Fine-grained access control policies based on domain, path, user, group, and network for precise authorization.

Reverse Proxy Integration

Native integration with nginx, Traefik, Caddy, HAProxy, Envoy, and Skipper via forward-auth and ExtAuthz endpoints.

Passwordless Authentication

Support for WebAuthn/FIDO2 passwordless login using hardware security keys and platform authenticators.

Scroll for all 7

JSON Schema 5

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

Authelia Configuration.Schema

0 properties

JSON SCHEMA

Authelia Exports.Identifiers.Schema

0 properties

JSON SCHEMA

Authelia Exports.Totp.Schema

0 properties

JSON SCHEMA

Authelia Exports.Webauthn.Schema

0 properties

JSON SCHEMA

Authelia User Database.Schema

0 properties

JSON SCHEMA

Security Posture 3

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

Authelia Authentication

apiKey/openIdConnect · 2 schemes

SECURITY

Authelia Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Authelia Vulnerability Disclosure

disclosure policy published

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Authelia Scopes

9 scopes

SCOPES

Agentic Access 1

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

Authelia Agentic Access

12 operations · 7 acting

AGENTIC

Use Cases 4

What developers build with this provider.

Self-Hosted SSO

Deploy a self-hosted SSO solution for internal web applications and services without relying on cloud identity providers.

Homelab Security

Protect self-hosted homelab applications with MFA and access control without exposing them to the internet unprotected.

Small Business Identity

Provide centralized authentication for small business web applications using LDAP and access control policies.

OIDC Provider

Act as an OpenID Connect provider for applications requiring OAuth 2.0 and OIDC-based authentication flows.

Integrations 5

Pre-built integrations with other platforms and tools.

Nginx

Integration with nginx-based proxies including nginx, nginx-proxy-manager, and Swag via auth_request module.

Traefik

Native Traefik middleware integration via ForwardAuth for seamless authentication in Docker and Kubernetes environments.

Caddy

Caddy forward-auth integration for protecting applications behind the Caddy web server.

LDAP/Active Directory

User directory integration with LDAP, Active Directory, and FreeIPA for enterprise user management.

Helm

Official Helm chart available at the authelia/chartrepo GitHub repository for Kubernetes deployment.

Solutions 2

Packaged solutions this provider offers.

Self-Hosted Identity

Complete self-hosted identity and access management solution for privacy-conscious deployments.

Zero Trust Security

Enforce zero trust network access policies for internal applications with per-request authentication verification.

Resources

Get Started 1

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

Documentation 8

Reference material describing how the API behaves

ContributionGuide

Documentation

JSONSchema

JSONSchema

JSONSchema

JSONSchema

JSONSchema

APIReference

Scroll for all 8

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

LLMsTxt

LLMsTxt

X-MCPServerCandidate

X-MCPServerCandidate

AgentSkill

AgentSkill

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Conformance

ErrorCatalog

Lifecycle

Conventions

DataModel

Versioning

Build 5

SDKs, sample code, and the tooling you integrate with

CodeOfConduct

CodeOfConduct

GitHubOrganization

GitHubRepository

Packages

CLI

Access & Security 7

Authentication, authorization, and security posture

SecurityPolicy

DomainSecurity

Authentication

OAuthScopes

VulnerabilityDisclosure

VulnerabilityDisclosure

Security

Security

SecurityPolicy

SecurityPolicy

Scroll for all 7

Operate 8

Status, limits, changes, and where to get help

IssueTracker

ChangeLog

Support

Community

Deprecation

ChangeLog

RateLimits

Roadmap

Scroll for all 8

Commercial 3

Pricing, plans, and the legal terms of use

License

License

Plans

Plans

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Source (apis.yml)

aid: authelia
name: Authelia
description: 'Authelia is an open source authentication and authorization server providing multi-factor authentication and
  single sign-on for applications behind a reverse proxy. It supports OpenID Connect 1.0, OAuth 2.0, TOTP, WebAuthn, and Duo
  Push as authentication methods. Authelia exposes a REST API documented with an OpenAPI specification and integrates with
  nginx, Traefik, Caddy, and other reverse proxies.

  '
type: Index
deliveryModel:
  model: self-hosted
  license: Apache-2.0
  open_source: true
  commercial: false
  callable_host: false
  label: Self-hosted open source · you run it yourself
  confidence: high
  source:
  - license
  - openapi
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Freemium · Self-serve signup
  confidence: medium
  try_now_blocked_by: example-domain
  source:
  - plans
  - authentication
  - security
  generated: '2026-08-26'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/authelia.png
tags:
- Authentication
- Authorization
- LDAP
- MFA
- Open-Source
- OpenID Connect
- Self-Hosted
- SSO
tags_raw:
- Authentication
- Authorization
- LDAP
- MFA
- Open Source
- OpenID Connect
- Self-Hosted
- SSO
url: https://raw.githubusercontent.com/api-evangelist/authelia/refs/heads/main/apis.yml
created: '2026-03-25'
modified: '2026-09-06'
specificationVersion: '0.23'
apis:
- aid: authelia:authelia-oidc-provider
  name: Authelia OpenID Connect 1.0 Provider
  description: 'Authelia acts as an OpenID Certified OpenID Connect 1.0 Provider supporting Authorization Code, Implicit,
    and Hybrid flows with PKCE, PAR, and various token endpoint authentication methods.

    '
  humanURL: https://www.authelia.com/configuration/identity-providers/openid-connect/provider/
  baseURL: https://auth.example.com
  tags:
  - Authentication
  - OIDC
  - OpenID Connect
  tags_raw:
  - Authentication
  - OAuth
  - OIDC
  - OpenID Connect
  properties:
  - type: Documentation
    url: https://www.authelia.com/configuration/identity-providers/openid-connect/provider/
- aid: authelia:authelia-api
  name: Authelia API
  description: 'The full first-party Authelia HTTP API — the portal, authorization, authentication, second factor, user information,
    session elevation, password reset/change and OpenID Connect 1.0 surfaces. Described by Authelia''s own OpenAPI 3.2.0 contract
    (42 paths, 78 operations, 100 schemas), published in the Authelia repository at api/openapi.yml and served by each deployment.
    Authelia is self-hosted, so the base URL is the operator''s own deployment host; auth.example.com is the default Authelia''s
    own contract template uses.

    '
  humanURL: https://www.authelia.com/reference/
  baseURL: https://auth.example.com
  tags:
  - Authentication
  - Authorization
  - MFA
  - OpenID Connect
  - SSO
  tags_raw:
  - Authentication
  - Authorization
  - MFA
  - OpenID Connect
  - SSO
  properties:
  - type: OpenAPI
    url: openapi/authelia-api-openapi.yml
  - type: Overlay
    url: overlays/authelia-api-overlay.yaml
  - type: Documentation
    url: https://www.authelia.com/reference/
  - type: GitHubRepository
    url: https://github.com/authelia/authelia
- aid: authelia:authelia-discovery-api
  name: Authelia Discovery API
  description: Well-known discovery endpoints.
  humanURL: https://www.authelia.com/reference/
  baseURL: https://auth.example.com
  tags:
  - Discovery
  properties:
  - type: OpenAPI
    url: openapi/authelia-discovery-api-openapi.yml
  - type: Documentation
    url: https://www.authelia.com/reference/
  - type: GitHubRepository
    url: https://github.com/authelia/authelia
- aid: authelia:authelia-oidc-api
  name: Authelia OIDC API
  description: OpenID Connect 1.0 / OAuth 2.0 provider endpoints.
  humanURL: https://www.authelia.com/reference/
  baseURL: https://auth.example.com
  tags:
  - OIDC
  properties:
  - type: OpenAPI
    url: openapi/authelia-oidc-api-openapi.yml
  - type: Documentation
    url: https://www.authelia.com/reference/
  - type: GitHubRepository
    url: https://github.com/authelia/authelia
common:
- type: IssueTracker
  url: https://github.com/authelia/authelia/issues
- type: SecurityPolicy
  url: https://github.com/authelia/authelia/blob/master/SECURITY.md
- type: CodeOfConduct
  url: https://github.com/authelia/authelia/blob/master/CODE_OF_CONDUCT.md
- type: ContributionGuide
  url: https://github.com/authelia/authelia/blob/master/CONTRIBUTING.md
- type: License
  name: Apache-2.0
  url: https://github.com/authelia/authelia/blob/master/LICENSE
- type: AgenticAccess
  url: agentic-access/authelia-agentic-access.yml
- type: DomainSecurity
  url: security/authelia-domain-security.yml
- type: Authentication
  url: authentication/authelia-authentication.yml
- type: OAuthScopes
  url: scopes/authelia-scopes.yml
- type: Website
  url: https://www.authelia.com
- type: Documentation
  url: https://www.authelia.com/configuration/prologue/introduction/
- type: GitHubOrganization
  url: https://github.com/authelia
- type: GitHubRepository
  url: https://github.com/authelia/authelia
- type: ChangeLog
  url: https://github.com/authelia/authelia/releases
- type: Support
  url: https://github.com/authelia/authelia/discussions
- type: Community
  url: https://discord.gg/authelia
- type: Features
  data:
  - name: Multi-Factor Authentication
    description: Supports TOTP, WebAuthn/FIDO2, Duo Push, and mobile authenticator apps as second factors.
  - name: OpenID Connect 1.0 Provider
    description: OpenID Certified identity provider supporting Authorization Code, Implicit, and Hybrid flows.
  - name: Single Sign-On
    description: Session-based SSO across all applications behind the reverse proxy with configurable session lifetime.
  - name: LDAP/Active Directory Integration
    description: User authentication against LDAP, Active Directory, and OpenLDAP directories with group-based access control.
  - name: Access Control Rules
    description: Fine-grained access control policies based on domain, path, user, group, and network for precise authorization.
  - name: Reverse Proxy Integration
    description: Native integration with nginx, Traefik, Caddy, HAProxy, Envoy, and Skipper via forward-auth and ExtAuthz
      endpoints.
  - name: Passwordless Authentication
    description: Support for WebAuthn/FIDO2 passwordless login using hardware security keys and platform authenticators.
- type: UseCases
  data:
  - name: Self-Hosted SSO
    description: Deploy a self-hosted SSO solution for internal web applications and services without relying on cloud identity
      providers.
  - name: Homelab Security
    description: Protect self-hosted homelab applications with MFA and access control without exposing them to the internet
      unprotected.
  - name: Small Business Identity
    description: Provide centralized authentication for small business web applications using LDAP and access control policies.
  - name: OIDC Provider
    description: Act as an OpenID Connect provider for applications requiring OAuth 2.0 and OIDC-based authentication flows.
- type: Integrations
  data:
  - name: Nginx
    description: Integration with nginx-based proxies including nginx, nginx-proxy-manager, and Swag via auth_request module.
  - name: Traefik
    description: Native Traefik middleware integration via ForwardAuth for seamless authentication in Docker and Kubernetes
      environments.
  - name: Caddy
    description: Caddy forward-auth integration for protecting applications behind the Caddy web server.
  - name: LDAP/Active Directory
    description: User directory integration with LDAP, Active Directory, and FreeIPA for enterprise user management.
  - name: Helm
    description: Official Helm chart available at the authelia/chartrepo GitHub repository for Kubernetes deployment.
- type: Solutions
  data:
  - name: Self-Hosted Identity
    description: Complete self-hosted identity and access management solution for privacy-conscious deployments.
  - name: Zero Trust Security
    description: Enforce zero trust network access policies for internal applications with per-request authentication verification.
- type: Packages
  url: packages/authelia-packages.yml
- type: LLMsTxt
  url: llms/authelia-llms.txt
- type: X-MCPServerCandidate
  url: mcp/authelia-mcp.yml
- type: Conformance
  url: conformance/authelia-conformance.yml
- type: ErrorCatalog
  url: errors/authelia-problem-types.yml
- type: Lifecycle
  url: lifecycle/authelia-lifecycle.yml
- type: Deprecation
  url: lifecycle/authelia-lifecycle.yml
- type: Conventions
  url: conventions/authelia-conventions.yml
- type: ChangeLog
  url: changelog/authelia-changelog.yml
- type: CLI
  url: cli/authelia-cli.yml
- type: DataModel
  url: data-model/authelia-data-model.yml
- type: AgentSkill
  url: skills/_index.yml
- type: Plans
  url: plans/authelia-plans-pricing.yml
- type: RateLimits
  url: rate-limits/authelia-rate-limits.yml
- type: VulnerabilityDisclosure
  url: security/authelia-vulnerability-disclosure.yml
- type: Security
  url: security/authelia-vulnerability-disclosure.yml
- type: JSONSchema
  name: Authelia Configuration
  url: json-schema/authelia-configuration.schema.json
- type: JSONSchema
  name: Authelia User Database
  url: json-schema/authelia-user-database.schema.json
- type: JSONSchema
  name: Authelia Identifiers Export
  url: json-schema/authelia-exports.identifiers.schema.json
- type: JSONSchema
  name: Authelia TOTP Export
  url: json-schema/authelia-exports.totp.schema.json
- type: JSONSchema
  name: Authelia WebAuthn Export
  url: json-schema/authelia-exports.webauthn.schema.json
- type: APIReference
  url: https://www.authelia.com/reference/
- type: GettingStarted
  url: https://www.authelia.com/integration/prologue/get-started/
- type: Blog
  url: https://www.authelia.com/blog/
- type: Roadmap
  url: https://www.authelia.com/roadmap/
- type: PrivacyPolicy
  url: https://www.authelia.com/policies/privacy/
- type: SecurityPolicy
  name: Authelia Security Policy
  url: https://www.authelia.com/policies/security/
- type: Versioning
  url: https://www.authelia.com/policies/versioning/
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
x-enrichment:
  date: '2026-09-06'
  status: enriched
  artifacts_added: 25
  pass: local-v3

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